diff --git a/gstreamer-allocators/src/dma_buf_allocator.rs b/gstreamer-allocators/src/dma_buf_allocator.rs
index 9333c5ad9..b6b347724 100644
--- a/gstreamer-allocators/src/dma_buf_allocator.rs
+++ b/gstreamer-allocators/src/dma_buf_allocator.rs
@@ -37,7 +37,7 @@ impl fmt::Debug for DmaBufMemoryRef {
 impl DmaBufMemoryRef {
     #[doc(alias = "gst_dmabuf_memory_get_fd")]
     pub fn fd(&self) -> RawFd {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe { ffi::gst_dmabuf_memory_get_fd(self.as_mut_ptr()) }
     }
 }
@@ -49,7 +49,7 @@ impl DmaBufAllocator {
         fd: A,
         size: usize,
     ) -> Result<gst::Memory, glib::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Option::<_>::from_glib_full(ffi::gst_dmabuf_allocator_alloc(
             self.unsafe_cast_ref::<gst::Allocator>().to_glib_none().0,
             fd.into_raw_fd(),
@@ -67,7 +67,7 @@ impl DmaBufAllocator {
         size: usize,
         flags: FdMemoryFlags,
     ) -> Result<gst::Memory, glib::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Option::<_>::from_glib_full(ffi::gst_dmabuf_allocator_alloc_with_flags(
             self.unsafe_cast_ref::<gst::Allocator>().to_glib_none().0,
             fd,
diff --git a/gstreamer-allocators/src/fd_allocator.rs b/gstreamer-allocators/src/fd_allocator.rs
index be6679ec6..0169695e2 100644
--- a/gstreamer-allocators/src/fd_allocator.rs
+++ b/gstreamer-allocators/src/fd_allocator.rs
@@ -39,7 +39,7 @@ impl fmt::Debug for FdMemoryRef {
 impl FdMemoryRef {
     #[doc(alias = "gst_fd_memory_get_fd")]
     pub fn fd(&self) -> RawFd {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe { ffi::gst_fd_memory_get_fd(self.as_mut_ptr()) }
     }
 }
@@ -52,7 +52,7 @@ impl FdAllocator {
         size: usize,
         flags: FdMemoryFlags,
     ) -> Result<gst::Memory, glib::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Option::<_>::from_glib_full(ffi::gst_fd_allocator_alloc(
             self.unsafe_cast_ref::<gst::Allocator>().to_glib_none().0,
             fd,
diff --git a/gstreamer-allocators/src/phys_memory.rs b/gstreamer-allocators/src/phys_memory.rs
index cd277ecbc..1a82dc4be 100644
--- a/gstreamer-allocators/src/phys_memory.rs
+++ b/gstreamer-allocators/src/phys_memory.rs
@@ -37,7 +37,7 @@ impl fmt::Debug for PhysMemoryRef {
 impl PhysMemoryRef {
     #[doc(alias = "gst_phys_memory_get_phys_addr")]
     pub fn phys_addr(&self) -> libc::uintptr_t {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe { ffi::gst_phys_memory_get_phys_addr(self.as_mut_ptr()) }
     }
 }
diff --git a/gstreamer-audio/src/audio_buffer.rs b/gstreamer-audio/src/audio_buffer.rs
index 6173c9244..ae907147f 100644
--- a/gstreamer-audio/src/audio_buffer.rs
+++ b/gstreamer-audio/src/audio_buffer.rs
@@ -397,7 +397,7 @@ impl<T> AudioBufferRef<T> {
 impl<'a> AudioBufferRef<&'a gst::BufferRef> {
     #[inline]
     pub unsafe fn from_glib_borrow(audio_buffer: *const ffi::GstAudioBuffer) -> Borrowed<Self> {
-        assert!(!audio_buffer.is_null());
+        debug_assert!(!audio_buffer.is_null());
 
         let info = crate::AudioInfo::from_glib_none(
             &(*audio_buffer).info as *const _ as *mut ffi::GstAudioInfo,
@@ -455,7 +455,7 @@ impl<'a> AudioBufferRef<&'a gst::BufferRef> {
 impl<'a> AudioBufferRef<&'a mut gst::BufferRef> {
     #[inline]
     pub unsafe fn from_glib_borrow_mut(audio_buffer: *mut ffi::GstAudioBuffer) -> Borrowed<Self> {
-        assert!(!audio_buffer.is_null());
+        debug_assert!(!audio_buffer.is_null());
 
         let info = crate::AudioInfo::from_glib_none(
             &(*audio_buffer).info as *const _ as *mut ffi::GstAudioInfo,
diff --git a/gstreamer-audio/src/audio_channel_position.rs b/gstreamer-audio/src/audio_channel_position.rs
index 7ac019db9..8bac50dc0 100644
--- a/gstreamer-audio/src/audio_channel_position.rs
+++ b/gstreamer-audio/src/audio_channel_position.rs
@@ -164,7 +164,7 @@ pub fn buffer_reorder_channels(
     from: &[AudioChannelPosition],
     to: &[AudioChannelPosition],
 ) -> Result<(), glib::BoolError> {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
 
     if from.len() != to.len() || from.len() > 64 {
         return Err(glib::bool_error!("Invalid number of channels"));
diff --git a/gstreamer-audio/src/audio_format_info.rs b/gstreamer-audio/src/audio_format_info.rs
index 2fa07624f..99a591042 100644
--- a/gstreamer-audio/src/audio_format_info.rs
+++ b/gstreamer-audio/src/audio_format_info.rs
@@ -18,7 +18,7 @@ impl FromGlib<i32> for AudioEndianness {
     #[allow(unused_unsafe)]
     #[inline]
     unsafe fn from_glib(value: i32) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         match value {
             1234 => Self::LittleEndian,
@@ -52,7 +52,7 @@ impl AudioFormatInfo {
 
         unsafe {
             let info = ffi::gst_audio_format_get_info(format.into_glib());
-            assert!(!info.is_null());
+            debug_assert!(!info.is_null());
 
             Self(&*info)
         }
diff --git a/gstreamer-audio/src/functions.rs b/gstreamer-audio/src/functions.rs
index bcd5b90c8..a90fe4ce7 100644
--- a/gstreamer-audio/src/functions.rs
+++ b/gstreamer-audio/src/functions.rs
@@ -48,7 +48,7 @@ pub fn audio_make_raw_caps(
     formats: &[crate::AudioFormat],
     layout: crate::AudioLayout,
 ) -> crate::AudioCapsBuilder<gst::caps::NoFeature> {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
 
     let formats = formats.iter().copied().map(|f| match f {
         crate::AudioFormat::Encoded => panic!("Invalid encoded format"),
diff --git a/gstreamer-base/src/base_parse_frame.rs b/gstreamer-base/src/base_parse_frame.rs
index b5f093cb8..a8c1aefbe 100644
--- a/gstreamer-base/src/base_parse_frame.rs
+++ b/gstreamer-base/src/base_parse_frame.rs
@@ -80,7 +80,7 @@ impl<'a> BaseParseFrame<'a> {
     #[inline]
     pub(crate) unsafe fn new(frame: *mut ffi::GstBaseParseFrame, _parse: &'a BaseParse) -> Self {
         skip_assert_initialized!();
-        assert!(!frame.is_null());
+        debug_assert!(!frame.is_null());
         Self(ptr::NonNull::new_unchecked(frame), PhantomData)
     }
 
@@ -146,19 +146,14 @@ impl<'a> BaseParseFrame<'a> {
 
     pub fn set_output_buffer(&mut self, output_buffer: gst::Buffer) {
         unsafe {
+            assert!(output_buffer.is_writable());
             let prev = (*self.to_glib_none().0).out_buffer;
 
             if !prev.is_null() {
                 gst::ffi::gst_mini_object_unref(prev as *mut gst::ffi::GstMiniObject);
             }
 
-            let ptr = output_buffer.into_glib_ptr();
-            let writable: bool = from_glib(gst::ffi::gst_mini_object_is_writable(
-                ptr as *const gst::ffi::GstMiniObject,
-            ));
-            assert!(writable);
-
-            (*self.to_glib_none().0).out_buffer = ptr;
+            (*self.to_glib_none().0).out_buffer = output_buffer.into_glib_ptr();
         }
     }
 
diff --git a/gstreamer-base/src/functions.rs b/gstreamer-base/src/functions.rs
index 639c8008a..d8fca5a26 100644
--- a/gstreamer-base/src/functions.rs
+++ b/gstreamer-base/src/functions.rs
@@ -61,7 +61,7 @@ pub fn type_find_helper_for_buffer<P: IsA<gst::Object>>(
     obj: Option<&P>,
     buf: &gst::BufferRef,
 ) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     unsafe {
         let mut prob = mem::MaybeUninit::uninit();
         let ret = ffi::gst_type_find_helper_for_buffer(
@@ -85,7 +85,7 @@ pub fn type_find_helper_for_buffer_with_extension<P: IsA<gst::Object>>(
     buf: &gst::BufferRef,
     extension: Option<&str>,
 ) -> Result<(gst::Caps, gst::TypeFindProbability), glib::error::BoolError> {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     unsafe {
         let mut prob = mem::MaybeUninit::uninit();
         let ret = ffi::gst_type_find_helper_for_buffer_with_extension(
@@ -110,7 +110,7 @@ pub fn type_find_helper_for_buffer_with_caps(
     buf: &gst::BufferRef,
     caps: &gst::CapsRef,
 ) -> (Option<gst::Caps>, gst::TypeFindProbability) {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     unsafe {
         let mut prob = mem::MaybeUninit::uninit();
         let ret = from_glib_full(ffi::gst_type_find_helper_for_buffer_with_caps(
@@ -131,7 +131,7 @@ pub fn type_find_helper_for_data_with_caps(
     data: &[u8],
     caps: &gst::CapsRef,
 ) -> (Option<gst::Caps>, gst::TypeFindProbability) {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     let size = data.len() as _;
     unsafe {
         let mut prob = mem::MaybeUninit::uninit();
@@ -153,7 +153,7 @@ pub fn type_find_list_factories_for_caps(
     obj: Option<&impl IsA<gst::Object>>,
     caps: &gst::CapsRef,
 ) -> glib::List<gst::TypeFindFactory> {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     unsafe {
         glib::collections::List::from_glib_full(ffi::gst_type_find_list_factories_for_caps(
             obj.map(|p| p.as_ref()).to_glib_none().0,
diff --git a/gstreamer-check/src/harness.rs b/gstreamer-check/src/harness.rs
index a57ccf08b..3b2f5a33a 100644
--- a/gstreamer-check/src/harness.rs
+++ b/gstreamer-check/src/harness.rs
@@ -595,7 +595,7 @@ impl Harness {
 
     #[inline]
     unsafe fn from_glib_full(ptr: *mut ffi::GstHarness) -> Harness {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
 
         Harness(ptr::NonNull::new_unchecked(ptr))
     }
@@ -646,7 +646,7 @@ impl Harness {
         element_sinkpad_name: Option<&str>,
         element_srcpad_name: Option<&str>,
     ) -> Harness {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let element_sinkpad_name = element_sinkpad_name.to_glib_none();
         let element_srcpad_name = element_srcpad_name.to_glib_none();
         unsafe {
diff --git a/gstreamer-check/src/lib.rs b/gstreamer-check/src/lib.rs
index 8367ae794..e7a9a491c 100644
--- a/gstreamer-check/src/lib.rs
+++ b/gstreamer-check/src/lib.rs
@@ -17,6 +17,10 @@ macro_rules! assert_initialized_main_thread {
     };
 }
 
+macro_rules! skip_assert_initialized {
+    () => {};
+}
+
 #[allow(clippy::unreadable_literal)]
 #[allow(clippy::too_many_arguments)]
 #[allow(clippy::match_same_arms)]
diff --git a/gstreamer-gl/src/functions.rs b/gstreamer-gl/src/functions.rs
index 6e95a5314..c706b6b8b 100644
--- a/gstreamer-gl/src/functions.rs
+++ b/gstreamer-gl/src/functions.rs
@@ -12,7 +12,7 @@ pub fn gl_handle_context_query(
     context: Option<&impl IsA<GLContext>>,
     other_context: Option<&impl IsA<GLContext>>,
 ) -> bool {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     unsafe {
         from_glib(ffi::gst_gl_handle_context_query(
             element.as_ref().to_glib_none().0,
@@ -29,7 +29,7 @@ pub fn gl_handle_set_context(
     element: &impl IsA<gst::Element>,
     context: &gst::Context,
 ) -> (Option<GLDisplay>, Option<GLContext>) {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     unsafe {
         let mut display = ptr::null_mut();
         let mut other_context = ptr::null_mut();
diff --git a/gstreamer-net/src/ptp_clock.rs b/gstreamer-net/src/ptp_clock.rs
index 68aa96781..61ef7246a 100644
--- a/gstreamer-net/src/ptp_clock.rs
+++ b/gstreamer-net/src/ptp_clock.rs
@@ -87,7 +87,7 @@ impl PtpClock {
                 Box::into_raw(user_data) as glib::ffi::gpointer,
                 Some(destroy::<F>),
             );
-            assert_ne!(id, 0);
+            debug_assert_ne!(id, 0);
 
             PtpStatisticsCallback(NonZeroU64::new_unchecked(id as _))
         }
diff --git a/gstreamer-pbutils/src/element_properties.rs b/gstreamer-pbutils/src/element_properties.rs
index 2959124b0..7cdb28b51 100644
--- a/gstreamer-pbutils/src/element_properties.rs
+++ b/gstreamer-pbutils/src/element_properties.rs
@@ -90,7 +90,7 @@ impl ElementProperties {
         let structure_name = self.0.name();
 
         if structure_name != "element-properties" {
-            assert_eq!(structure_name, "element-properties-map");
+            debug_assert_eq!(structure_name, "element-properties-map");
             return false;
         }
 
diff --git a/gstreamer-pbutils/src/encoding_profile.rs b/gstreamer-pbutils/src/encoding_profile.rs
index bc1b98784..d37c63da4 100644
--- a/gstreamer-pbutils/src/encoding_profile.rs
+++ b/gstreamer-pbutils/src/encoding_profile.rs
@@ -312,7 +312,7 @@ impl EncodingContainerProfile {
                 profile.upcast().into_glib_ptr(),
             );
             // Can't possibly fail unless we pass random pointers
-            assert_ne!(res, glib::ffi::GFALSE);
+            debug_assert_ne!(res, glib::ffi::GFALSE);
         }
     }
 }
diff --git a/gstreamer-play/src/config.rs b/gstreamer-play/src/config.rs
index e1a90ea54..57e494a32 100644
--- a/gstreamer-play/src/config.rs
+++ b/gstreamer-play/src/config.rs
@@ -41,13 +41,13 @@ impl PlayConfig {
     #[doc(alias = "get_position_update_interval")]
     #[doc(alias = "gst_play_config_get_position_update_interval")]
     pub fn position_update_interval(&self) -> u32 {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe { ffi::gst_play_config_get_position_update_interval(self.0.to_glib_none().0) }
     }
 
     #[doc(alias = "get_seek_accurate")]
     pub fn is_seek_accurate(&self) -> bool {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             from_glib(ffi::gst_play_config_get_seek_accurate(
                 self.0.to_glib_none().0,
@@ -58,13 +58,13 @@ impl PlayConfig {
     #[doc(alias = "get_user_agent")]
     #[doc(alias = "gst_play_config_get_user_agent")]
     pub fn user_agent(&self) -> Option<String> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe { from_glib_full(ffi::gst_play_config_get_user_agent(self.0.to_glib_none().0)) }
     }
 
     #[doc(alias = "gst_play_config_set_position_update_interval")]
     pub fn set_position_update_interval(&mut self, interval: u32) {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             ffi::gst_play_config_set_position_update_interval(
                 self.0.to_glib_none_mut().0,
@@ -74,7 +74,7 @@ impl PlayConfig {
     }
 
     pub fn set_seek_accurate(&mut self, accurate: bool) {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         // FIXME: Work-around for
         // http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/?id=cc58bd6ae071dec4ea7b4be626034accd0372755
         self.set("accurate-seek", accurate);
@@ -82,7 +82,7 @@ impl PlayConfig {
 
     #[doc(alias = "gst_play_config_set_user_agent")]
     pub fn set_user_agent(&mut self, agent: &str) {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             ffi::gst_play_config_set_user_agent(
                 self.0.to_glib_none_mut().0,
diff --git a/gstreamer-play/src/play_video_overlay_video_renderer.rs b/gstreamer-play/src/play_video_overlay_video_renderer.rs
index d2250235b..07251f133 100644
--- a/gstreamer-play/src/play_video_overlay_video_renderer.rs
+++ b/gstreamer-play/src/play_video_overlay_video_renderer.rs
@@ -20,7 +20,7 @@ impl PlayVideoOverlayVideoRenderer {
         window_handle: uintptr_t,
         video_sink: &P,
     ) -> PlayVideoOverlayVideoRenderer {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         from_glib_full(ffi::gst_play_video_overlay_video_renderer_new_with_sink(
             window_handle as *mut _,
@@ -30,7 +30,7 @@ impl PlayVideoOverlayVideoRenderer {
 
     #[doc(alias = "gst_play_video_overlay_video_renderer_new_with_sink")]
     pub fn with_sink<P: IsA<gst::Element>>(video_sink: &P) -> PlayVideoOverlayVideoRenderer {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         unsafe {
             from_glib_full(ffi::gst_play_video_overlay_video_renderer_new_with_sink(
diff --git a/gstreamer-player/src/config.rs b/gstreamer-player/src/config.rs
index e809c6877..4ae85ec11 100644
--- a/gstreamer-player/src/config.rs
+++ b/gstreamer-player/src/config.rs
@@ -41,13 +41,13 @@ impl PlayerConfig {
     #[doc(alias = "get_position_update_interval")]
     #[doc(alias = "gst_player_config_get_position_update_interval")]
     pub fn position_update_interval(&self) -> u32 {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe { ffi::gst_player_config_get_position_update_interval(self.0.to_glib_none().0) }
     }
 
     #[doc(alias = "get_seek_accurate")]
     pub fn is_seek_accurate(&self) -> bool {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             from_glib(ffi::gst_player_config_get_seek_accurate(
                 self.0.to_glib_none().0,
@@ -58,7 +58,7 @@ impl PlayerConfig {
     #[doc(alias = "get_user_agent")]
     #[doc(alias = "gst_player_config_get_user_agent")]
     pub fn user_agent(&self) -> Option<String> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             from_glib_full(ffi::gst_player_config_get_user_agent(
                 self.0.to_glib_none().0,
@@ -68,7 +68,7 @@ impl PlayerConfig {
 
     #[doc(alias = "gst_player_config_set_position_update_interval")]
     pub fn set_position_update_interval(&mut self, interval: u32) {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             ffi::gst_player_config_set_position_update_interval(
                 self.0.to_glib_none_mut().0,
@@ -78,7 +78,7 @@ impl PlayerConfig {
     }
 
     pub fn set_seek_accurate(&mut self, accurate: bool) {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         // FIXME: Work-around for
         // http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/?id=cc58bd6ae071dec4ea7b4be626034accd0372755
         self.set("accurate-seek", accurate);
@@ -86,7 +86,7 @@ impl PlayerConfig {
 
     #[doc(alias = "gst_player_config_set_user_agent")]
     pub fn set_user_agent(&mut self, agent: &str) {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             ffi::gst_player_config_set_user_agent(
                 self.0.to_glib_none_mut().0,
diff --git a/gstreamer-player/src/player_video_overlay_video_renderer.rs b/gstreamer-player/src/player_video_overlay_video_renderer.rs
index 0a8fef68c..11ad957e5 100644
--- a/gstreamer-player/src/player_video_overlay_video_renderer.rs
+++ b/gstreamer-player/src/player_video_overlay_video_renderer.rs
@@ -20,7 +20,7 @@ impl PlayerVideoOverlayVideoRenderer {
         window_handle: uintptr_t,
         video_sink: &P,
     ) -> PlayerVideoOverlayVideoRenderer {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         from_glib_full(ffi::gst_player_video_overlay_video_renderer_new_with_sink(
             window_handle as *mut _,
@@ -30,7 +30,7 @@ impl PlayerVideoOverlayVideoRenderer {
 
     #[doc(alias = "gst_player_video_overlay_video_renderer_new_with_sink")]
     pub fn with_sink<P: IsA<gst::Element>>(video_sink: &P) -> PlayerVideoOverlayVideoRenderer {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         unsafe {
             from_glib_full(ffi::gst_player_video_overlay_video_renderer_new_with_sink(
diff --git a/gstreamer-rtp/src/rtp_buffer.rs b/gstreamer-rtp/src/rtp_buffer.rs
index 6dacb6158..683ba1b14 100644
--- a/gstreamer-rtp/src/rtp_buffer.rs
+++ b/gstreamer-rtp/src/rtp_buffer.rs
@@ -319,7 +319,7 @@ impl<'a, T> RTPBuffer<'a, T> {
         unsafe {
             let ptr = self.rtp_buffer.buffer;
 
-            assert!(!ptr.is_null());
+            debug_assert!(!ptr.is_null());
 
             gst::BufferRef::from_ptr(ptr)
         }
diff --git a/gstreamer-rtsp-server/src/rtsp_context.rs b/gstreamer-rtsp-server/src/rtsp_context.rs
index fb5d17906..cda3e3c2c 100644
--- a/gstreamer-rtsp-server/src/rtsp_context.rs
+++ b/gstreamer-rtsp-server/src/rtsp_context.rs
@@ -29,7 +29,7 @@ impl RTSPContext {
 impl FromGlibPtrBorrow<*mut ffi::GstRTSPContext> for RTSPContext {
     #[inline]
     unsafe fn from_glib_borrow(ptr: *mut ffi::GstRTSPContext) -> Borrowed<Self> {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         Borrowed::new(RTSPContext(ptr::NonNull::new_unchecked(ptr)))
     }
 }
diff --git a/gstreamer-rtsp-server/src/rtsp_token.rs b/gstreamer-rtsp-server/src/rtsp_token.rs
index cf63eb13b..0f0baef7d 100644
--- a/gstreamer-rtsp-server/src/rtsp_token.rs
+++ b/gstreamer-rtsp-server/src/rtsp_token.rs
@@ -16,7 +16,7 @@ impl RTSPToken {
     }
 
     pub fn new(values: &[(&str, &(dyn ToSendValue + Sync))]) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut token = RTSPToken::new_empty();
 
         {
diff --git a/gstreamer-sdp/src/sdp_bandwidth.rs b/gstreamer-sdp/src/sdp_bandwidth.rs
index 54ecab984..5098525d8 100644
--- a/gstreamer-sdp/src/sdp_bandwidth.rs
+++ b/gstreamer-sdp/src/sdp_bandwidth.rs
@@ -38,7 +38,7 @@ impl SDPBandwidth {
 
 impl Clone for SDPBandwidth {
     fn clone(&self) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             let mut bw = mem::MaybeUninit::uninit();
             ffi::gst_sdp_bandwidth_set(bw.as_mut_ptr(), self.0.bwtype, self.0.bandwidth);
diff --git a/gstreamer-sdp/src/sdp_connection.rs b/gstreamer-sdp/src/sdp_connection.rs
index ec4132660..d0d4a750f 100644
--- a/gstreamer-sdp/src/sdp_connection.rs
+++ b/gstreamer-sdp/src/sdp_connection.rs
@@ -69,7 +69,7 @@ impl SDPConnection {
 
 impl Clone for SDPConnection {
     fn clone(&self) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             let mut conn = mem::MaybeUninit::uninit();
             ffi::gst_sdp_connection_set(
diff --git a/gstreamer-sdp/src/sdp_media.rs b/gstreamer-sdp/src/sdp_media.rs
index acb71006c..18ce5f65d 100644
--- a/gstreamer-sdp/src/sdp_media.rs
+++ b/gstreamer-sdp/src/sdp_media.rs
@@ -21,11 +21,13 @@ glib::wrapper! {
     match fn {
         copy => |ptr| {
             let mut copy = ptr::null_mut();
-            assert_eq!(ffi::gst_sdp_media_copy(ptr, &mut copy), ffi::GST_SDP_OK);
+            let res = ffi::gst_sdp_media_copy(ptr, &mut copy);
+            debug_assert_eq!(res, ffi::GST_SDP_OK);
             copy
         },
         free => |ptr| {
-            ffi::gst_sdp_media_free(ptr);
+            let res = ffi::gst_sdp_media_free(ptr);
+            debug_assert_eq!(res, ffi::GST_SDP_OK);
         },
     }
 }
@@ -612,7 +614,7 @@ impl SDPMediaRef {
         caps: &gst::CapsRef,
         media: &mut SDPMedia,
     ) -> Result<(), glib::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let result = unsafe {
             ffi::gst_sdp_media_set_media_from_caps(caps.as_ptr(), media.to_glib_none_mut().0)
         };
diff --git a/gstreamer-sdp/src/sdp_message.rs b/gstreamer-sdp/src/sdp_message.rs
index e752bb6e7..0ece3d421 100644
--- a/gstreamer-sdp/src/sdp_message.rs
+++ b/gstreamer-sdp/src/sdp_message.rs
@@ -27,10 +27,14 @@ glib::wrapper! {
     match fn {
         copy => |ptr| {
             let mut copy = std::ptr::null_mut();
-            assert_eq!(ffi::gst_sdp_message_copy(ptr, &mut copy), ffi::GST_SDP_OK);
+            let res = ffi::gst_sdp_message_copy(ptr, &mut copy);
+            debug_assert_eq!(res, ffi::GST_SDP_OK);
             copy
         },
-        free => |ptr| assert_eq!(ffi::gst_sdp_message_free(ptr), ffi::GST_SDP_OK),
+        free => |ptr| {
+            let res = ffi::gst_sdp_message_free(ptr);
+            debug_assert_eq!(res, ffi::GST_SDP_OK);
+        },
         type_ => || ffi::gst_sdp_message_get_type(),
     }
 }
@@ -887,7 +891,7 @@ impl SDPMessageRef {
 
     #[doc(alias = "gst_sdp_message_as_uri")]
     pub fn as_uri(&self, scheme: &str) -> Result<String, glib::error::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             match from_glib_full(ffi::gst_sdp_message_as_uri(
                 scheme.to_glib_none().0,
diff --git a/gstreamer-sdp/src/sdp_time.rs b/gstreamer-sdp/src/sdp_time.rs
index c85bae480..9e09446dd 100644
--- a/gstreamer-sdp/src/sdp_time.rs
+++ b/gstreamer-sdp/src/sdp_time.rs
@@ -66,7 +66,7 @@ impl SDPTime {
 
 impl Clone for SDPTime {
     fn clone(&self) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         #[allow(clippy::cast_ptr_alignment)]
         unsafe {
             let mut time = mem::MaybeUninit::uninit();
diff --git a/gstreamer-sdp/src/sdp_zone.rs b/gstreamer-sdp/src/sdp_zone.rs
index d6f85d9a0..6cc7c14d4 100644
--- a/gstreamer-sdp/src/sdp_zone.rs
+++ b/gstreamer-sdp/src/sdp_zone.rs
@@ -48,7 +48,7 @@ impl SDPZone {
 
 impl Clone for SDPZone {
     fn clone(&self) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             let mut zone = mem::MaybeUninit::uninit();
             ffi::gst_sdp_zone_set(zone.as_mut_ptr(), self.0.time, self.0.typed_time);
diff --git a/gstreamer-video/src/enums.rs b/gstreamer-video/src/enums.rs
index 6e64fef48..4660d3dfd 100644
--- a/gstreamer-video/src/enums.rs
+++ b/gstreamer-video/src/enums.rs
@@ -16,7 +16,7 @@ use crate::VideoOrientationMethod;
 impl VideoCaptionType {
     #[doc(alias = "gst_video_caption_type_from_caps")]
     pub fn from_caps(caps: &gst::CapsRef) -> VideoCaptionType {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe { from_glib(ffi::gst_video_caption_type_from_caps(caps.as_ptr())) }
     }
 }
@@ -28,7 +28,7 @@ impl VideoOrientationMethod {
     #[cfg_attr(feature = "dox", doc(cfg(feature = "v1_20")))]
     #[doc(alias = "gst_video_orientation_from_tag")]
     pub fn from_tag(taglist: &gst::TagListRef) -> Option<VideoOrientationMethod> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         unsafe {
             use std::mem;
diff --git a/gstreamer-video/src/functions.rs b/gstreamer-video/src/functions.rs
index b1dd6ea6d..a53622102 100644
--- a/gstreamer-video/src/functions.rs
+++ b/gstreamer-video/src/functions.rs
@@ -212,7 +212,7 @@ pub fn is_common_aspect_ratio(width: u32, height: u32, par: gst::Fraction) -> bo
 pub fn video_make_raw_caps(
     formats: &[crate::VideoFormat],
 ) -> crate::VideoCapsBuilder<gst::caps::NoFeature> {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
 
     let formats = formats.iter().copied().map(|f| match f {
         crate::VideoFormat::Encoded => panic!("Invalid encoded format"),
diff --git a/gstreamer-video/src/video_buffer_pool.rs b/gstreamer-video/src/video_buffer_pool.rs
index 68c740755..08d610f68 100644
--- a/gstreamer-video/src/video_buffer_pool.rs
+++ b/gstreamer-video/src/video_buffer_pool.rs
@@ -66,7 +66,7 @@ impl VideoAlignment {
         padding_right: u32,
         stride_align: &[u32; ffi::GST_VIDEO_MAX_PLANES as usize],
     ) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         let videoalignment = ffi::GstVideoAlignment {
             padding_top,
diff --git a/gstreamer-video/src/video_codec_frame.rs b/gstreamer-video/src/video_codec_frame.rs
index 67a8f5646..83960ccc5 100644
--- a/gstreamer-video/src/video_codec_frame.rs
+++ b/gstreamer-video/src/video_codec_frame.rs
@@ -192,7 +192,7 @@ impl<'a> VideoCodecFrame<'a> {
                 let writable: bool = from_glib(gst::ffi::gst_mini_object_is_writable(
                     ptr as *const gst::ffi::GstMiniObject,
                 ));
-                assert!(writable);
+                debug_assert!(writable);
 
                 Some(gst::BufferRef::from_mut_ptr(ptr))
             }
@@ -201,19 +201,14 @@ impl<'a> VideoCodecFrame<'a> {
 
     pub fn set_output_buffer(&mut self, output_buffer: gst::Buffer) {
         unsafe {
+            assert!(output_buffer.is_writable());
             let prev = (*self.to_glib_none().0).output_buffer;
 
             if !prev.is_null() {
                 gst::ffi::gst_mini_object_unref(prev as *mut gst::ffi::GstMiniObject);
             }
 
-            let ptr = output_buffer.into_glib_ptr();
-            let writable: bool = from_glib(gst::ffi::gst_mini_object_is_writable(
-                ptr as *const gst::ffi::GstMiniObject,
-            ));
-            assert!(writable);
-
-            (*self.to_glib_none().0).output_buffer = ptr;
+            (*self.to_glib_none().0).output_buffer = output_buffer.into_glib_ptr();
         }
     }
 
diff --git a/gstreamer-video/src/video_converter.rs b/gstreamer-video/src/video_converter.rs
index ebee06cc5..ff6eb5c0c 100644
--- a/gstreamer-video/src/video_converter.rs
+++ b/gstreamer-video/src/video_converter.rs
@@ -27,7 +27,7 @@ impl VideoConverter {
         out_info: &crate::VideoInfo,
         config: Option<VideoConverterConfig>,
     ) -> Result<Self, glib::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         if in_info.fps() != out_info.fps() {
             return Err(glib::bool_error!("Can't do framerate conversion"));
         }
diff --git a/gstreamer-video/src/video_event.rs b/gstreamer-video/src/video_event.rs
index f44134b92..f07919807 100644
--- a/gstreamer-video/src/video_event.rs
+++ b/gstreamer-video/src/video_event.rs
@@ -43,7 +43,7 @@ macro_rules! event_builder_generic_impl {
 
         #[must_use = "Building the event without using it has no effect"]
         pub fn build(mut self) -> gst::Event {
-            assert_initialized_main_thread!();
+            skip_assert_initialized!();
             unsafe {
                 let event = $new_fn(&mut self);
                 if let Some(seqnum) = self.seqnum {
@@ -151,6 +151,7 @@ pub struct DownstreamForceKeyUnitEvent {
 
 impl DownstreamForceKeyUnitEvent {
     pub fn builder<'a>() -> DownstreamForceKeyUnitEventBuilder<'a> {
+        assert_initialized_main_thread!();
         DownstreamForceKeyUnitEventBuilder::new()
     }
 
@@ -246,6 +247,7 @@ pub struct UpstreamForceKeyUnitEvent {
 
 impl UpstreamForceKeyUnitEvent {
     pub fn builder<'a>() -> UpstreamForceKeyUnitEventBuilder<'a> {
+        assert_initialized_main_thread!();
         UpstreamForceKeyUnitEventBuilder::new()
     }
 
@@ -370,7 +372,7 @@ macro_rules! nav_event_builder {
         }
 
         impl<'a> $builder<'a> {
-            pub fn new($($event_field: $event_type)?) -> Self {
+            fn new($($event_field: $event_type)?) -> Self {
                 skip_assert_initialized!();
                 Self {
                     seqnum: None,
@@ -500,7 +502,7 @@ pub struct CommandEventBuilder<'a> {
 }
 
 impl<'a> CommandEventBuilder<'a> {
-    pub fn new(command: NavigationCommand) -> Self {
+    fn new(command: NavigationCommand) -> Self {
         skip_assert_initialized!();
         Self {
             seqnum: None,
@@ -958,7 +960,7 @@ impl NavigationEvent {
 
     #[doc(alias = "gst_navigation_event_get_type")]
     pub fn type_(event: &gst::EventRef) -> NavigationEventType {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe { from_glib(ffi::gst_navigation_event_get_type(event.as_mut_ptr())) }
     }
 
diff --git a/gstreamer-video/src/video_format_info.rs b/gstreamer-video/src/video_format_info.rs
index 25be3d1b3..4a13fd2e9 100644
--- a/gstreamer-video/src/video_format_info.rs
+++ b/gstreamer-video/src/video_format_info.rs
@@ -11,18 +11,16 @@ pub struct VideoFormatInfo(&'static ffi::GstVideoFormatInfo);
 impl VideoFormatInfo {
     #[inline]
     pub unsafe fn from_ptr(format_info: *const ffi::GstVideoFormatInfo) -> Self {
-        assert_initialized_main_thread!();
-        assert!(!format_info.is_null());
+        debug_assert!(!format_info.is_null());
         Self(&*format_info)
     }
 
     #[inline]
     pub fn from_format(format: crate::VideoFormat) -> Self {
         assert_initialized_main_thread!();
-
         unsafe {
             let info = ffi::gst_video_format_get_info(format.into_glib());
-            assert!(!info.is_null());
+            debug_assert!(!info.is_null());
 
             Self(&*info)
         }
diff --git a/gstreamer-video/src/video_frame.rs b/gstreamer-video/src/video_frame.rs
index 1c83df8cc..e92e89777 100644
--- a/gstreamer-video/src/video_frame.rs
+++ b/gstreamer-video/src/video_frame.rs
@@ -732,7 +732,7 @@ impl<T> VideoFrameRef<T> {
 impl<'a> VideoFrameRef<&'a gst::BufferRef> {
     #[inline]
     pub unsafe fn from_glib_borrow(frame: *const ffi::GstVideoFrame) -> Borrowed<Self> {
-        assert!(!frame.is_null());
+        debug_assert!(!frame.is_null());
 
         let frame = ptr::read(frame);
         let info = crate::VideoInfo(ptr::read(&frame.info));
@@ -832,7 +832,7 @@ impl<'a> VideoFrameRef<&'a gst::BufferRef> {
 impl<'a> VideoFrameRef<&'a mut gst::BufferRef> {
     #[inline]
     pub unsafe fn from_glib_borrow_mut(frame: *mut ffi::GstVideoFrame) -> Self {
-        assert!(!frame.is_null());
+        debug_assert!(!frame.is_null());
 
         let frame = ptr::read(frame);
         let info = crate::VideoInfo(ptr::read(&frame.info));
diff --git a/gstreamer-video/src/video_hdr.rs b/gstreamer-video/src/video_hdr.rs
index ae99629b9..afe96fffd 100644
--- a/gstreamer-video/src/video_hdr.rs
+++ b/gstreamer-video/src/video_hdr.rs
@@ -10,7 +10,7 @@ pub struct VideoContentLightLevel(ffi::GstVideoContentLightLevel);
 
 impl VideoContentLightLevel {
     pub fn new(max_content_light_level: u16, max_frame_average_light_level: u16) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         VideoContentLightLevel(ffi::GstVideoContentLightLevel {
             max_content_light_level,
@@ -148,7 +148,7 @@ impl VideoMasteringDisplayInfo {
         max_display_mastering_luminance: u32,
         min_display_mastering_luminance: u32,
     ) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         VideoMasteringDisplayInfo(ffi::GstVideoMasteringDisplayInfo {
             display_primaries: unsafe { mem::transmute(display_primaries) },
diff --git a/gstreamer-video/src/video_info.rs b/gstreamer-video/src/video_info.rs
index 39e18bb9a..e171fe386 100644
--- a/gstreamer-video/src/video_info.rs
+++ b/gstreamer-video/src/video_info.rs
@@ -101,7 +101,7 @@ impl VideoColorimetry {
         transfer: crate::VideoTransferFunction,
         primaries: crate::VideoColorPrimaries,
     ) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         let colorimetry = ffi::GstVideoColorimetry {
             range: range.into_glib(),
diff --git a/gstreamer-video/src/video_message.rs b/gstreamer-video/src/video_message.rs
index de52f54e9..4cc37b3a4 100644
--- a/gstreamer-video/src/video_message.rs
+++ b/gstreamer-video/src/video_message.rs
@@ -42,7 +42,7 @@ macro_rules! message_builder_generic_impl {
 
         #[must_use = "Building the message without using it has no effect"]
         pub fn build(mut self) -> Message {
-            assert_initialized_main_thread!();
+            skip_assert_initialized!();
             unsafe {
                 let src = self.builder.src.to_glib_none().0;
                 let msg = $new_fn(&mut self, src);
@@ -77,8 +77,8 @@ struct MessageBuilder<'a> {
 }
 
 impl<'a> MessageBuilder<'a> {
-    pub fn new() -> Self {
-        assert_initialized_main_thread!();
+    pub(crate) fn new() -> Self {
+        skip_assert_initialized!();
         Self {
             src: None,
             seqnum: None,
@@ -151,18 +151,18 @@ impl NavigationEventMessage {
     #[doc(alias = "gst_navigation_message_new_event")]
     #[allow(clippy::new_ret_no_self)]
     pub fn new(event: gst::Event) -> gst::Message {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         NavigationEventMessageBuilder::new(event).build()
     }
 
     pub fn builder<'a>(event: gst::Event) -> NavigationEventMessageBuilder<'a> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         NavigationEventMessageBuilder::new(event)
     }
 
     #[doc(alias = "gst_navigation_message_parse_event")]
     pub fn parse(msg: &gst::MessageRef) -> Result<Self, glib::error::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             let mut event = ptr::null_mut();
             let ret = from_glib(ffi::gst_navigation_message_parse_event(
@@ -188,7 +188,7 @@ pub enum NavigationMessage {
 impl NavigationMessage {
     #[doc(alias = "gst_navigation_message_get_type")]
     pub fn type_(msg: &gst::MessageRef) -> NavigationMessageType {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe { from_glib(ffi::gst_navigation_message_get_type(msg.as_mut_ptr())) }
     }
 
diff --git a/gstreamer-video/src/video_overlay_composition.rs b/gstreamer-video/src/video_overlay_composition.rs
index 7b9c39e22..f3eab7f7c 100644
--- a/gstreamer-video/src/video_overlay_composition.rs
+++ b/gstreamer-video/src/video_overlay_composition.rs
@@ -37,7 +37,7 @@ impl VideoOverlayRectangle {
         render_height: u32,
         flags: crate::VideoOverlayFormatFlags,
     ) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         assert!(buffer.meta::<crate::VideoMeta>().is_some());
         unsafe {
             from_glib_full(ffi::gst_video_overlay_rectangle_new_raw(
diff --git a/gstreamer-video/src/video_time_code.rs b/gstreamer-video/src/video_time_code.rs
index 264868a13..d9e3f340e 100644
--- a/gstreamer-video/src/video_time_code.rs
+++ b/gstreamer-video/src/video_time_code.rs
@@ -203,7 +203,7 @@ impl ValidVideoTimeCode {
         frames: u32,
         field_count: u32,
     ) -> Result<Self, glib::error::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let tc = VideoTimeCode::new(
             fps,
             latest_daily_jam,
@@ -233,7 +233,6 @@ impl ValidVideoTimeCode {
 
     #[doc(alias = "gst_video_time_code_add_frames")]
     pub fn add_frames(&mut self, frames: i64) {
-        skip_assert_initialized!();
         unsafe {
             ffi::gst_video_time_code_add_frames(self.to_glib_none_mut().0, frames);
         }
diff --git a/gstreamer-webrtc/src/lib.rs b/gstreamer-webrtc/src/lib.rs
index bb4bd4116..84f180169 100644
--- a/gstreamer-webrtc/src/lib.rs
+++ b/gstreamer-webrtc/src/lib.rs
@@ -10,14 +10,6 @@ pub use glib;
 pub use gst;
 pub use gst_sdp;
 
-macro_rules! assert_initialized_main_thread {
-    () => {
-        if !gst::INITIALIZED.load(std::sync::atomic::Ordering::SeqCst) {
-            gst::assert_initialized();
-        }
-    };
-}
-
 macro_rules! skip_assert_initialized {
     () => {};
 }
diff --git a/gstreamer-webrtc/src/web_rtc_session_description.rs b/gstreamer-webrtc/src/web_rtc_session_description.rs
index cd4aafdde..81f597124 100644
--- a/gstreamer-webrtc/src/web_rtc_session_description.rs
+++ b/gstreamer-webrtc/src/web_rtc_session_description.rs
@@ -9,7 +9,7 @@ use crate::{WebRTCSDPType, WebRTCSessionDescription};
 impl WebRTCSessionDescription {
     #[doc(alias = "gst_webrtc_session_description_new")]
     pub fn new(type_: WebRTCSDPType, sdp: gst_sdp::SDPMessage) -> WebRTCSessionDescription {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             let mut sdp = mem::ManuallyDrop::new(sdp);
             from_glib_full(ffi::gst_webrtc_session_description_new(
diff --git a/gstreamer/src/allocation_params.rs b/gstreamer/src/allocation_params.rs
index 6aaaede6f..1795335c9 100644
--- a/gstreamer/src/allocation_params.rs
+++ b/gstreamer/src/allocation_params.rs
@@ -82,7 +82,7 @@ impl FromGlib<ffi::GstAllocationParams> for AllocationParams {
     #[allow(unused_unsafe)]
     #[inline]
     unsafe fn from_glib(value: ffi::GstAllocationParams) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Self::from(value)
     }
 }
diff --git a/gstreamer/src/buffer.rs b/gstreamer/src/buffer.rs
index 953b9e090..836209e4e 100644
--- a/gstreamer/src/buffer.rs
+++ b/gstreamer/src/buffer.rs
@@ -163,7 +163,6 @@ impl Buffer {
 
     #[doc(alias = "gst_buffer_append")]
     pub fn append(&mut self, other: Self) {
-        skip_assert_initialized!();
         unsafe {
             let ptr = ffi::gst_buffer_append(self.as_mut_ptr(), other.into_glib_ptr());
             self.replace_ptr(ptr);
@@ -1001,8 +1000,7 @@ impl<'a> IntoIterator for &'a BufferRef {
 
 impl std::iter::FromIterator<Memory> for Buffer {
     fn from_iter<T: IntoIterator<Item = Memory>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
-
+        skip_assert_initialized!();
         let iter = iter.into_iter();
 
         let mut buffer = Buffer::new();
diff --git a/gstreamer/src/buffer_cursor.rs b/gstreamer/src/buffer_cursor.rs
index bef2f6f10..7572df504 100644
--- a/gstreamer/src/buffer_cursor.rs
+++ b/gstreamer/src/buffer_cursor.rs
@@ -112,7 +112,7 @@ macro_rules! define_read_write_fn_impl(
                         buffer_ref($self).as_mut_ptr(),
                         $self.cur_mem_idx,
                     );
-                    assert!(!memory.is_null());
+                    debug_assert!(!memory.is_null());
 
                     if ffi::gst_memory_map(memory, &mut $self.map_info, $map_flags)
                         == glib::ffi::GFALSE
@@ -124,10 +124,10 @@ macro_rules! define_read_write_fn_impl(
                     }
                 }
 
-                assert!($self.cur_mem_offset < $self.map_info.size);
+                debug_assert!($self.cur_mem_offset < $self.map_info.size);
             }
 
-            assert!(!$self.map_info.memory.is_null());
+            debug_assert!(!$self.map_info.memory.is_null());
 
             // Copy all data we can currently copy
             let data_left = $self.map_info.size - $self.cur_mem_offset;
diff --git a/gstreamer/src/buffer_pool.rs b/gstreamer/src/buffer_pool.rs
index 5152b8d5f..473e616f8 100644
--- a/gstreamer/src/buffer_pool.rs
+++ b/gstreamer/src/buffer_pool.rs
@@ -52,7 +52,7 @@ pub struct BufferPoolConfigRef(StructureRef);
 impl BufferPoolConfigRef {
     #[inline]
     pub unsafe fn from_glib_borrow<'a>(ptr: *const ffi::GstStructure) -> &'a BufferPoolConfigRef {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
 
         &*(ptr as *mut StructureRef as *mut BufferPoolConfigRef)
     }
@@ -61,7 +61,7 @@ impl BufferPoolConfigRef {
     pub unsafe fn from_glib_borrow_mut<'a>(
         ptr: *mut ffi::GstStructure,
     ) -> &'a mut BufferPoolConfigRef {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
 
         &mut *(ptr as *mut StructureRef as *mut BufferPoolConfigRef)
     }
diff --git a/gstreamer/src/caps.rs b/gstreamer/src/caps.rs
index 0a12097c7..aab365c7d 100644
--- a/gstreamer/src/caps.rs
+++ b/gstreamer/src/caps.rs
@@ -51,7 +51,7 @@ impl Caps {
 
     #[doc(alias = "gst_caps_new_simple")]
     pub fn new_simple(name: &str, values: &[(&str, &(dyn ToSendValue + Sync))]) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut caps = Caps::new_empty();
 
         let structure = Structure::new(name, values);
@@ -68,7 +68,6 @@ impl Caps {
 
     #[doc(alias = "gst_caps_fixate")]
     pub fn fixate(&mut self) {
-        skip_assert_initialized!();
         unsafe {
             // See https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/388
             assert!(!self.is_any());
@@ -83,7 +82,6 @@ impl Caps {
 
     #[doc(alias = "gst_caps_merge")]
     pub fn merge(&mut self, other: Self) {
-        skip_assert_initialized!();
         unsafe {
             let ptr = ffi::gst_caps_merge(self.as_mut_ptr(), other.into_glib_ptr());
             self.replace_ptr(ptr);
@@ -92,7 +90,6 @@ impl Caps {
 
     #[doc(alias = "gst_caps_merge_structure")]
     pub fn merge_structure(&mut self, structure: Structure) {
-        skip_assert_initialized!();
         unsafe {
             let ptr = ffi::gst_caps_merge_structure(self.as_mut_ptr(), structure.into_glib_ptr());
             self.replace_ptr(ptr);
@@ -101,7 +98,6 @@ impl Caps {
 
     #[doc(alias = "gst_caps_merge_structure_full")]
     pub fn merge_structure_full(&mut self, structure: Structure, features: Option<CapsFeatures>) {
-        skip_assert_initialized!();
         unsafe {
             let ptr = ffi::gst_caps_merge_structure_full(
                 self.as_mut_ptr(),
@@ -116,7 +112,6 @@ impl Caps {
 
     #[doc(alias = "gst_caps_normalize")]
     pub fn normalize(&mut self) {
-        skip_assert_initialized!();
         unsafe {
             let ptr = ffi::gst_caps_normalize(self.as_mut_ptr());
             self.replace_ptr(ptr);
@@ -125,7 +120,6 @@ impl Caps {
 
     #[doc(alias = "gst_caps_simplify")]
     pub fn simplify(&mut self) {
-        skip_assert_initialized!();
         unsafe {
             let ptr = ffi::gst_caps_simplify(self.as_mut_ptr());
             self.replace_ptr(ptr);
@@ -134,7 +128,6 @@ impl Caps {
 
     #[doc(alias = "gst_caps_truncate")]
     pub fn truncate(&mut self) {
-        skip_assert_initialized!();
         unsafe {
             let ptr = ffi::gst_caps_truncate(self.as_mut_ptr());
             self.replace_ptr(ptr);
@@ -157,7 +150,7 @@ impl str::FromStr for Caps {
 
 impl std::iter::FromIterator<Structure> for Caps {
     fn from_iter<T: IntoIterator<Item = Structure>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut caps = Caps::new_empty();
 
         {
@@ -171,7 +164,7 @@ impl std::iter::FromIterator<Structure> for Caps {
 
 impl std::iter::FromIterator<(Structure, CapsFeatures)> for Caps {
     fn from_iter<T: IntoIterator<Item = (Structure, CapsFeatures)>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut caps = Caps::new_empty();
 
         {
@@ -186,7 +179,7 @@ impl std::iter::FromIterator<(Structure, CapsFeatures)> for Caps {
 
 impl std::iter::FromIterator<(Structure, Option<CapsFeatures>)> for Caps {
     fn from_iter<T: IntoIterator<Item = (Structure, Option<CapsFeatures>)>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut caps = Caps::new_empty();
 
         {
@@ -201,7 +194,7 @@ impl std::iter::FromIterator<(Structure, Option<CapsFeatures>)> for Caps {
 
 impl std::iter::FromIterator<Caps> for Caps {
     fn from_iter<T: IntoIterator<Item = Caps>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut caps = Caps::new_empty();
 
         {
@@ -493,7 +486,6 @@ impl CapsRef {
 
     #[doc(alias = "gst_caps_subtract")]
     pub fn subtract(&self, other: &Self) -> Caps {
-        skip_assert_initialized!();
         unsafe {
             from_glib_full(ffi::gst_caps_subtract(
                 self.as_mut_ptr(),
diff --git a/gstreamer/src/caps_features.rs b/gstreamer/src/caps_features.rs
index b19e1fdbd..7abad52f1 100644
--- a/gstreamer/src/caps_features.rs
+++ b/gstreamer/src/caps_features.rs
@@ -22,7 +22,7 @@ unsafe impl Sync for CapsFeatures {}
 impl CapsFeatures {
     #[doc(alias = "gst_caps_features_new")]
     pub fn new(features: &[&str]) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut f = Self::new_empty();
 
         for feature in features {
@@ -34,7 +34,7 @@ impl CapsFeatures {
 
     #[doc(alias = "gst_caps_features_new_id")]
     pub fn from_quarks(features: &[glib::Quark]) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut f = Self::new_empty();
 
         for feature in features {
@@ -104,7 +104,7 @@ impl Clone for CapsFeatures {
     fn clone(&self) -> Self {
         unsafe {
             let ptr = ffi::gst_caps_features_copy(self.0.as_ref());
-            assert!(!ptr.is_null());
+            debug_assert!(!ptr.is_null());
             CapsFeatures(ptr::NonNull::new_unchecked(ptr))
         }
     }
@@ -218,9 +218,9 @@ impl<'a> ToGlibPtrMut<'a, *mut ffi::GstCapsFeatures> for CapsFeatures {
 impl FromGlibPtrNone<*const ffi::GstCapsFeatures> for CapsFeatures {
     #[inline]
     unsafe fn from_glib_none(ptr: *const ffi::GstCapsFeatures) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         let ptr = ffi::gst_caps_features_copy(ptr);
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         CapsFeatures(ptr::NonNull::new_unchecked(ptr))
     }
 }
@@ -228,9 +228,9 @@ impl FromGlibPtrNone<*const ffi::GstCapsFeatures> for CapsFeatures {
 impl FromGlibPtrNone<*mut ffi::GstCapsFeatures> for CapsFeatures {
     #[inline]
     unsafe fn from_glib_none(ptr: *mut ffi::GstCapsFeatures) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         let ptr = ffi::gst_caps_features_copy(ptr);
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         CapsFeatures(ptr::NonNull::new_unchecked(ptr))
     }
 }
@@ -238,7 +238,7 @@ impl FromGlibPtrNone<*mut ffi::GstCapsFeatures> for CapsFeatures {
 impl FromGlibPtrFull<*const ffi::GstCapsFeatures> for CapsFeatures {
     #[inline]
     unsafe fn from_glib_full(ptr: *const ffi::GstCapsFeatures) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         CapsFeatures(ptr::NonNull::new_unchecked(
             ptr as *mut ffi::GstCapsFeatures,
         ))
@@ -248,7 +248,7 @@ impl FromGlibPtrFull<*const ffi::GstCapsFeatures> for CapsFeatures {
 impl FromGlibPtrFull<*mut ffi::GstCapsFeatures> for CapsFeatures {
     #[inline]
     unsafe fn from_glib_full(ptr: *mut ffi::GstCapsFeatures) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         CapsFeatures(ptr::NonNull::new_unchecked(ptr))
     }
 }
@@ -327,7 +327,7 @@ pub struct CapsFeaturesRef(ffi::GstCapsFeatures);
 impl CapsFeaturesRef {
     #[inline]
     pub unsafe fn from_glib_borrow<'a>(ptr: *const ffi::GstCapsFeatures) -> &'a CapsFeaturesRef {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
 
         &*(ptr as *mut CapsFeaturesRef)
     }
@@ -336,7 +336,7 @@ impl CapsFeaturesRef {
     pub unsafe fn from_glib_borrow_mut<'a>(
         ptr: *mut ffi::GstCapsFeatures,
     ) -> &'a mut CapsFeaturesRef {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
 
         &mut *(ptr as *mut CapsFeaturesRef)
     }
@@ -547,7 +547,7 @@ impl<'a> Iterator for Iter<'a> {
         unsafe {
             let feature =
                 ffi::gst_caps_features_get_nth(self.caps_features.as_ptr(), self.idx as u32);
-            assert!(!feature.is_null());
+            debug_assert!(!feature.is_null());
 
             self.idx += 1;
 
@@ -576,7 +576,7 @@ impl<'a> Iterator for Iter<'a> {
                 self.idx = end + 1;
                 let feature =
                     ffi::gst_caps_features_get_nth(self.caps_features.as_ptr(), end as u32);
-                assert!(!feature.is_null());
+                debug_assert!(!feature.is_null());
                 Some(CStr::from_ptr(feature).to_str().unwrap())
             }
         }
@@ -591,7 +591,7 @@ impl<'a> Iterator for Iter<'a> {
                     self.caps_features.as_ptr(),
                     self.n_features as u32 - 1,
                 );
-                assert!(!feature.is_null());
+                debug_assert!(!feature.is_null());
                 Some(CStr::from_ptr(feature).to_str().unwrap())
             }
         }
@@ -609,7 +609,7 @@ impl<'a> DoubleEndedIterator for Iter<'a> {
         unsafe {
             let feature =
                 ffi::gst_caps_features_get_nth(self.caps_features.as_ptr(), self.n_features as u32);
-            assert!(!feature.is_null());
+            debug_assert!(!feature.is_null());
 
             Some(CStr::from_ptr(feature).to_str().unwrap())
         }
@@ -627,7 +627,7 @@ impl<'a> DoubleEndedIterator for Iter<'a> {
                     self.caps_features.as_ptr(),
                     self.n_features as u32,
                 );
-                assert!(!feature.is_null());
+                debug_assert!(!feature.is_null());
 
                 Some(CStr::from_ptr(feature).to_str().unwrap())
             }
@@ -650,8 +650,7 @@ impl<'a> IntoIterator for &'a CapsFeaturesRef {
 
 impl<'a> std::iter::FromIterator<&'a str> for CapsFeatures {
     fn from_iter<T: IntoIterator<Item = &'a str>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
-
+        skip_assert_initialized!();
         let mut features = CapsFeatures::new_empty();
 
         iter.into_iter().for_each(|f| features.add(f));
@@ -662,8 +661,7 @@ impl<'a> std::iter::FromIterator<&'a str> for CapsFeatures {
 
 impl std::iter::FromIterator<String> for CapsFeatures {
     fn from_iter<T: IntoIterator<Item = String>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
-
+        skip_assert_initialized!();
         let mut features = CapsFeatures::new_empty();
 
         iter.into_iter().for_each(|f| features.add(&f));
@@ -674,8 +672,7 @@ impl std::iter::FromIterator<String> for CapsFeatures {
 
 impl std::iter::FromIterator<glib::Quark> for CapsFeatures {
     fn from_iter<T: IntoIterator<Item = glib::Quark>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
-
+        skip_assert_initialized!();
         let mut features = CapsFeatures::new_empty();
 
         iter.into_iter().for_each(|f| features.add_from_quark(f));
diff --git a/gstreamer/src/clock.rs b/gstreamer/src/clock.rs
index 62e2c8917..39c2ba543 100644
--- a/gstreamer/src/clock.rs
+++ b/gstreamer/src/clock.rs
@@ -469,7 +469,6 @@ impl<O: IsA<Clock>> ClockExtManual for O {
         start_time: ClockTime,
         interval: ClockTime,
     ) -> Result<(), glib::BoolError> {
-        skip_assert_initialized!();
         unsafe {
             let res: bool = from_glib(ffi::gst_clock_periodic_id_reinit(
                 self.as_ref().to_glib_none().0,
diff --git a/gstreamer/src/device_monitor.rs b/gstreamer/src/device_monitor.rs
index 7191c4159..90a9cdd76 100644
--- a/gstreamer/src/device_monitor.rs
+++ b/gstreamer/src/device_monitor.rs
@@ -22,7 +22,7 @@ impl FromGlib<libc::c_uint> for DeviceMonitorFilterId {
     #[inline]
     unsafe fn from_glib(val: libc::c_uint) -> DeviceMonitorFilterId {
         skip_assert_initialized!();
-        assert_ne!(val, 0);
+        debug_assert_ne!(val, 0);
         DeviceMonitorFilterId(NonZeroU32::new_unchecked(val))
     }
 }
diff --git a/gstreamer/src/device_provider.rs b/gstreamer/src/device_provider.rs
index 8c669ff68..9689b0c76 100644
--- a/gstreamer/src/device_provider.rs
+++ b/gstreamer/src/device_provider.rs
@@ -14,7 +14,7 @@ impl DeviceProvider {
         rank: Rank,
         type_: glib::types::Type,
     ) -> Result<(), glib::error::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             glib::result_from_gboolean!(
                 ffi::gst_device_provider_register(
diff --git a/gstreamer/src/element.rs b/gstreamer/src/element.rs
index d22bb3584..8f3095b2a 100644
--- a/gstreamer/src/element.rs
+++ b/gstreamer/src/element.rs
@@ -56,7 +56,7 @@ impl Element {
         rank: Rank,
         type_: glib::types::Type,
     ) -> Result<(), glib::error::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             glib::result_from_gboolean!(
                 ffi::gst_element_register(
@@ -94,7 +94,7 @@ impl FromGlib<libc::c_ulong> for NotifyWatchId {
     #[inline]
     unsafe fn from_glib(val: libc::c_ulong) -> NotifyWatchId {
         skip_assert_initialized!();
-        assert_ne!(val, 0);
+        debug_assert_ne!(val, 0);
         NotifyWatchId(NonZeroU64::new_unchecked(val as _))
     }
 }
diff --git a/gstreamer/src/element_factory.rs b/gstreamer/src/element_factory.rs
index dfe953d39..3f8784b81 100644
--- a/gstreamer/src/element_factory.rs
+++ b/gstreamer/src/element_factory.rs
@@ -17,8 +17,6 @@ impl ElementFactory {
         &self,
         properties: &[(&str, &dyn ToValue)],
     ) -> Result<Element, glib::BoolError> {
-        assert_initialized_main_thread!();
-
         let mut builder = self.create();
         builder.properties = properties
             .iter()
@@ -33,8 +31,7 @@ impl ElementFactory {
         factoryname: &str,
         properties: &[(&str, &dyn ToValue)],
     ) -> Result<Element, glib::BoolError> {
-        assert_initialized_main_thread!();
-
+        skip_assert_initialized!();
         let mut builder = Self::make(factoryname);
         builder.properties = properties
             .iter()
@@ -47,6 +44,8 @@ impl ElementFactory {
     #[doc(alias = "gst_element_factory_create_with_properties")]
     #[track_caller]
     pub fn create(&self) -> ElementBuilder {
+        assert_initialized_main_thread!();
+
         ElementBuilder {
             name_or_factory: NameOrFactory::Factory(self),
             properties: Vec::new(),
@@ -81,8 +80,7 @@ impl ElementFactory {
         factoryname: &str,
         name: Option<&str>,
     ) -> Result<Element, glib::BoolError> {
-        assert_initialized_main_thread!();
-
+        skip_assert_initialized!();
         let mut builder = Self::make(factoryname);
         if let Some(name) = name {
             builder = builder.name(name);
diff --git a/gstreamer/src/error.rs b/gstreamer/src/error.rs
index ae3ed057e..e47d7580a 100644
--- a/gstreamer/src/error.rs
+++ b/gstreamer/src/error.rs
@@ -62,7 +62,7 @@ impl ErrorMessage {
         function: &'static str,
         line: u32,
     ) -> ErrorMessage {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let error_domain = T::domain();
         let error_code = error.code();
 
@@ -115,7 +115,7 @@ pub struct LoggableError {
 
 impl LoggableError {
     pub fn new(category: crate::DebugCategory, bool_error: glib::BoolError) -> LoggableError {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         LoggableError {
             category,
             bool_error,
diff --git a/gstreamer/src/event.rs b/gstreamer/src/event.rs
index 90aa26817..5700d6aa0 100644
--- a/gstreamer/src/event.rs
+++ b/gstreamer/src/event.rs
@@ -157,7 +157,7 @@ impl EventRef {
     pub fn seqnum(&self) -> Seqnum {
         unsafe {
             let seqnum = ffi::gst_event_get_seqnum(self.as_mut_ptr());
-            assert_ne!(seqnum, 0);
+            debug_assert_ne!(seqnum, 0);
             Seqnum(NonZeroU32::new_unchecked(seqnum))
         }
     }
@@ -770,7 +770,7 @@ impl StreamGroupDone {
             ffi::gst_event_parse_stream_group_done(self.as_mut_ptr(), group_id.as_mut_ptr());
 
             let group_id = group_id.assume_init();
-            assert_ne!(group_id, 0);
+            debug_assert_ne!(group_id, 0);
             GroupId(NonZeroU32::new_unchecked(group_id))
         }
     }
@@ -1544,7 +1544,6 @@ macro_rules! event_builder_generic_impl {
 
         #[must_use = "Building the event without using it has no effect"]
         pub fn build(mut self) -> Event {
-            assert_initialized_main_thread!();
             unsafe {
                 let event = $new_fn(&mut self);
                 if let Some(seqnum) = self.builder.seqnum {
diff --git a/gstreamer/src/functions.rs b/gstreamer/src/functions.rs
index ae154da87..ac4ef0458 100644
--- a/gstreamer/src/functions.rs
+++ b/gstreamer/src/functions.rs
@@ -16,7 +16,7 @@ pub fn parse_bin_from_description_with_name(
     ghost_unlinked_pads: bool,
     bin_name: &str,
 ) -> Result<Bin, glib::Error> {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     let bin = parse_bin_from_description(bin_description, ghost_unlinked_pads)?;
     if !bin_name.is_empty() {
         let obj = bin.clone().upcast::<Object>();
@@ -34,7 +34,7 @@ pub fn parse_bin_from_description_full(
     mut context: Option<&mut ParseContext>,
     flags: ParseFlags,
 ) -> Result<Element, glib::Error> {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     unsafe {
         let mut error = ptr::null_mut();
         let ret = ffi::gst_parse_bin_from_description_full(
@@ -59,7 +59,7 @@ pub fn parse_bin_from_description_with_name_full(
     context: Option<&mut ParseContext>,
     flags: ParseFlags,
 ) -> Result<Element, glib::Error> {
-    assert_initialized_main_thread!();
+    skip_assert_initialized!();
     let bin =
         parse_bin_from_description_full(bin_description, ghost_unlinked_pads, context, flags)?;
     if !bin_name.is_empty() {
diff --git a/gstreamer/src/iterator.rs b/gstreamer/src/iterator.rs
index d1ff6b6f8..156453b67 100644
--- a/gstreamer/src/iterator.rs
+++ b/gstreamer/src/iterator.rs
@@ -590,7 +590,7 @@ impl<'a, T: 'static> glib::translate::ToGlibPtrMut<'a, *mut ffi::GstIterator> fo
 impl<T: StaticType> glib::translate::FromGlibPtrNone<*const ffi::GstIterator> for Iterator<T> {
     #[inline]
     unsafe fn from_glib_none(ptr: *const ffi::GstIterator) -> Self {
-        assert_ne!(
+        debug_assert_ne!(
             glib::gobject_ffi::g_type_is_a((*ptr).type_, T::static_type().into_glib()),
             glib::ffi::GFALSE
         );
@@ -602,7 +602,7 @@ impl<T: StaticType> glib::translate::FromGlibPtrNone<*const ffi::GstIterator> fo
 impl<T: StaticType> glib::translate::FromGlibPtrNone<*mut ffi::GstIterator> for Iterator<T> {
     #[inline]
     unsafe fn from_glib_none(ptr: *mut ffi::GstIterator) -> Self {
-        assert_ne!(
+        debug_assert_ne!(
             glib::gobject_ffi::g_type_is_a((*ptr).type_, T::static_type().into_glib()),
             glib::ffi::GFALSE
         );
@@ -614,8 +614,8 @@ impl<T: StaticType> glib::translate::FromGlibPtrNone<*mut ffi::GstIterator> for
 impl<T: StaticType> glib::translate::FromGlibPtrBorrow<*mut ffi::GstIterator> for Iterator<T> {
     #[inline]
     unsafe fn from_glib_borrow(ptr: *mut ffi::GstIterator) -> Borrowed<Self> {
-        assert!(!ptr.is_null());
-        assert_ne!(
+        debug_assert!(!ptr.is_null());
+        debug_assert_ne!(
             glib::gobject_ffi::g_type_is_a((*ptr).type_, T::static_type().into_glib()),
             glib::ffi::GFALSE
         );
@@ -630,8 +630,8 @@ impl<T: StaticType> glib::translate::FromGlibPtrBorrow<*mut ffi::GstIterator> fo
 impl<T: StaticType> glib::translate::FromGlibPtrFull<*mut ffi::GstIterator> for Iterator<T> {
     #[inline]
     unsafe fn from_glib_full(ptr: *mut ffi::GstIterator) -> Self {
-        assert!(!ptr.is_null());
-        assert_ne!(
+        debug_assert!(!ptr.is_null());
+        debug_assert_ne!(
             glib::gobject_ffi::g_type_is_a((*ptr).type_, T::static_type().into_glib()),
             glib::ffi::GFALSE
         );
diff --git a/gstreamer/src/log.rs b/gstreamer/src/log.rs
index d2dde9ff5..a338647c5 100644
--- a/gstreamer/src/log.rs
+++ b/gstreamer/src/log.rs
@@ -525,7 +525,7 @@ unsafe impl TransparentPtrType for DebugCategory {}
 impl FromGlibPtrNone<*mut ffi::GstDebugCategory> for DebugCategory {
     #[inline]
     unsafe fn from_glib_none(ptr: *mut ffi::GstDebugCategory) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         DebugCategory(Some(ptr::NonNull::new_unchecked(ptr)))
     }
 }
@@ -533,7 +533,7 @@ impl FromGlibPtrNone<*mut ffi::GstDebugCategory> for DebugCategory {
 impl FromGlibPtrFull<*mut ffi::GstDebugCategory> for DebugCategory {
     #[inline]
     unsafe fn from_glib_full(ptr: *mut ffi::GstDebugCategory) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         DebugCategory(Some(ptr::NonNull::new_unchecked(ptr)))
     }
 }
diff --git a/gstreamer/src/memory.rs b/gstreamer/src/memory.rs
index 09b57f481..e2606e217 100644
--- a/gstreamer/src/memory.rs
+++ b/gstreamer/src/memory.rs
@@ -836,7 +836,7 @@ macro_rules! memory_object_wrapper {
                 let value = &*(value as *const $crate::glib::Value as *const $crate::glib::gobject_ffi::GValue);
                 let ptr = &value.data[0].v_pointer as *const $crate::glib::ffi::gpointer
                     as *const *const $ffi_name;
-                assert!(!(*ptr).is_null());
+                debug_assert!(!(*ptr).is_null());
                 &*(ptr as *const $name)
             }
         }
diff --git a/gstreamer/src/message.rs b/gstreamer/src/message.rs
index b96897aaa..ae185b98d 100644
--- a/gstreamer/src/message.rs
+++ b/gstreamer/src/message.rs
@@ -1853,7 +1853,6 @@ macro_rules! message_builder_generic_impl {
 
         #[must_use = "Building the message without using it has no effect"]
         pub fn build(mut self) -> Message {
-            assert_initialized_main_thread!();
             unsafe {
                 let src = self.builder.src.to_glib_none().0;
                 let msg = $new_fn(&mut self, src);
diff --git a/gstreamer/src/meta.rs b/gstreamer/src/meta.rs
index 1ebe7f734..96f295804 100644
--- a/gstreamer/src/meta.rs
+++ b/gstreamer/src/meta.rs
@@ -17,11 +17,11 @@ pub unsafe trait MetaAPI: Sync + Send + Sized {
 
     #[inline]
     unsafe fn from_ptr(buffer: &BufferRef, ptr: *const Self::GstType) -> MetaRef<Self> {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
 
         let meta_api = Self::meta_api();
         if meta_api != glib::Type::INVALID {
-            assert_eq!(
+            debug_assert_eq!(
                 meta_api,
                 from_glib((*(*(ptr as *const ffi::GstMeta)).info).api)
             )
@@ -38,11 +38,11 @@ pub unsafe trait MetaAPI: Sync + Send + Sized {
         buffer: &mut BufferRef,
         ptr: *mut Self::GstType,
     ) -> MetaRefMut<Self, T> {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
 
         let meta_api = Self::meta_api();
         if meta_api != glib::Type::INVALID {
-            assert_eq!(
+            debug_assert_eq!(
                 meta_api,
                 from_glib((*(*(ptr as *const ffi::GstMeta)).info).api)
             )
@@ -278,7 +278,7 @@ impl<'a, T> MetaRefMut<'a, T, Standalone> {
                 self.buffer.as_mut_ptr(),
                 self.meta as *mut T as *mut ffi::GstMeta,
             );
-            assert_ne!(res, glib::ffi::GFALSE);
+            debug_assert_ne!(res, glib::ffi::GFALSE);
 
             Ok(())
         }
diff --git a/gstreamer/src/miniobject.rs b/gstreamer/src/miniobject.rs
index 8977a548f..71f7bea29 100644
--- a/gstreamer/src/miniobject.rs
+++ b/gstreamer/src/miniobject.rs
@@ -31,7 +31,7 @@ macro_rules! mini_object_wrapper (
             #[inline]
             pub unsafe fn from_glib_none(ptr: *const $ffi_name) -> Self {
                 skip_assert_initialized!();
-                assert!(!ptr.is_null());
+                debug_assert!(!ptr.is_null());
 
                 $crate::ffi::gst_mini_object_ref(ptr as *mut $crate::ffi::GstMiniObject);
 
@@ -43,7 +43,7 @@ macro_rules! mini_object_wrapper (
             #[inline]
             pub unsafe fn from_glib_full(ptr: *const $ffi_name) -> Self {
                 skip_assert_initialized!();
-                assert!(!ptr.is_null());
+                debug_assert!(!ptr.is_null());
 
                 $name {
                     obj: std::ptr::NonNull::new_unchecked(ptr as *mut $ffi_name),
@@ -53,7 +53,7 @@ macro_rules! mini_object_wrapper (
             #[inline]
             pub unsafe fn from_glib_borrow(ptr: *const $ffi_name) -> $crate::glib::translate::Borrowed<Self> {
                 skip_assert_initialized!();
-                assert!(!ptr.is_null());
+                debug_assert!(!ptr.is_null());
 
                 $crate::glib::translate::Borrowed::new($name {
                     obj: std::ptr::NonNull::new_unchecked(ptr as *mut $ffi_name),
@@ -62,7 +62,7 @@ macro_rules! mini_object_wrapper (
 
             #[inline]
             pub unsafe fn replace_ptr(&mut self, ptr: *mut $ffi_name) {
-                assert!(!ptr.is_null());
+                debug_assert!(!ptr.is_null());
                 self.obj = std::ptr::NonNull::new_unchecked(ptr);
             }
 
@@ -78,7 +78,7 @@ macro_rules! mini_object_wrapper (
                         self.as_mut_ptr() as *mut $crate::ffi::GstMiniObject
                     );
                     self.replace_ptr(ptr as *mut $ffi_name);
-                    assert!(self.is_writable());
+                    debug_assert!(self.is_writable());
 
                     &mut *(self.obj.as_mut() as *mut $ffi_name as *mut $ref_name)
                 }
@@ -435,14 +435,14 @@ macro_rules! mini_object_wrapper (
 
             #[inline]
             pub unsafe fn from_ptr<'a>(ptr: *const $ffi_name) -> &'a Self {
-                assert!(!ptr.is_null());
+                debug_assert!(!ptr.is_null());
                 &*(ptr as *const Self)
             }
 
             #[inline]
             pub unsafe fn from_mut_ptr<'a>(ptr: *mut $ffi_name) -> &'a mut Self {
-                assert!(!ptr.is_null());
-                assert_ne!(
+                debug_assert!(!ptr.is_null());
+                debug_assert_ne!(
                     $crate::ffi::gst_mini_object_is_writable(ptr as *mut $crate::ffi::GstMiniObject),
                     $crate::glib::ffi::GFALSE
                 );
@@ -542,7 +542,7 @@ macro_rules! mini_object_wrapper (
                 assert_eq!(std::mem::size_of::<$name>(), std::mem::size_of::<$crate::glib::ffi::gpointer>());
                 let value = &*(value as *const $crate::glib::Value as *const $crate::glib::gobject_ffi::GValue);
                 let ptr = &value.data[0].v_pointer as *const $crate::glib::ffi::gpointer as *const *const $ffi_name;
-                assert!(!(*ptr).is_null());
+                debug_assert!(!(*ptr).is_null());
                 &*(ptr as *const $name)
             }
         }
diff --git a/gstreamer/src/pad.rs b/gstreamer/src/pad.rs
index 5ae3d5c25..6fabb7af9 100644
--- a/gstreamer/src/pad.rs
+++ b/gstreamer/src/pad.rs
@@ -33,7 +33,7 @@ impl FromGlib<libc::c_ulong> for PadProbeId {
     #[inline]
     unsafe fn from_glib(val: libc::c_ulong) -> PadProbeId {
         skip_assert_initialized!();
-        assert_ne!(val, 0);
+        debug_assert_ne!(val, 0);
         PadProbeId(NonZeroU64::new_unchecked(val as _))
     }
 }
@@ -1364,7 +1364,7 @@ where
 {
     let func: &F = &*((*pad).getrangedata as *const F);
 
-    assert!(!buffer.is_null());
+    debug_assert!(!buffer.is_null());
 
     let pad = Pad::from_glib_borrow(pad);
     let pad = pad.unsafe_cast_ref();
@@ -1639,7 +1639,7 @@ impl<T: IsA<Pad> + IsA<glib::Object> + glib::object::IsClass> PadBuilder<T> {
             unsafe {
                 let res = ffi::gst_ghost_pad_construct(pad.to_glib_none().0);
                 // This can't really fail...
-                assert_ne!(res, glib::ffi::GFALSE, "Failed to construct ghost pad");
+                debug_assert_ne!(res, glib::ffi::GFALSE, "Failed to construct ghost pad");
             }
         }
 
@@ -1647,7 +1647,7 @@ impl<T: IsA<Pad> + IsA<glib::Object> + glib::object::IsClass> PadBuilder<T> {
     }
 
     pub fn from_static_template(templ: &StaticPadTemplate, name: Option<&str>) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         let templ = templ.get();
         Self::from_template(&templ, name)
@@ -1691,7 +1691,7 @@ impl<T: IsA<Pad> + IsA<glib::Object> + glib::object::IsClass> PadBuilder<T> {
             unsafe {
                 let res = ffi::gst_ghost_pad_construct(pad.to_glib_none().0);
                 // This can't really fail...
-                assert_ne!(res, glib::ffi::GFALSE, "Failed to construct ghost pad");
+                debug_assert_ne!(res, glib::ffi::GFALSE, "Failed to construct ghost pad");
             }
         }
 
diff --git a/gstreamer/src/pad_template.rs b/gstreamer/src/pad_template.rs
index dad95e34c..308c7b13c 100644
--- a/gstreamer/src/pad_template.rs
+++ b/gstreamer/src/pad_template.rs
@@ -12,7 +12,7 @@ impl PadTemplate {
         pad_template: &StaticPadTemplate,
         pad_type: glib::types::Type,
     ) -> Result<PadTemplate, glib::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             Option::<_>::from_glib_none(
                 ffi::gst_pad_template_new_from_static_pad_template_with_gtype(
@@ -83,7 +83,7 @@ impl PadTemplate {
         presence: PadPresence,
         caps: &'a Caps,
     ) -> PadTemplateBuilder<'a> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         PadTemplateBuilder {
             name_template,
diff --git a/gstreamer/src/param_spec.rs b/gstreamer/src/param_spec.rs
index a79774eb7..b54b8f05b 100644
--- a/gstreamer/src/param_spec.rs
+++ b/gstreamer/src/param_spec.rs
@@ -127,7 +127,7 @@ pub struct ParamSpecFractionBuilder<'a> {
 
 impl<'a> ParamSpecFractionBuilder<'a> {
     fn new(name: &'a str) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Self {
             name,
             ..Default::default()
@@ -292,7 +292,7 @@ pub struct ParamSpecArrayBuilder<'a> {
 
 impl<'a> ParamSpecArrayBuilder<'a> {
     fn new(name: &'a str) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Self {
             name,
             ..Default::default()
diff --git a/gstreamer/src/query.rs b/gstreamer/src/query.rs
index fb59e7010..ed6b9438f 100644
--- a/gstreamer/src/query.rs
+++ b/gstreamer/src/query.rs
@@ -274,7 +274,7 @@ macro_rules! declare_concrete_query(
         impl DerefMut for $name<Query> {
             #[inline]
             fn deref_mut(&mut self) -> &mut Self::Target {
-                assert!(self.0.is_writable());
+                debug_assert!(self.0.is_writable());
                 unsafe { &mut *(self.0.as_mut_ptr() as *mut Self::Target) }
             }
         }
@@ -931,7 +931,7 @@ declare_concrete_query!(Custom, T);
 impl Custom<Query> {
     #[doc(alias = "gst_query_new_custom")]
     pub fn new(structure: crate::Structure) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             Self(from_glib_full(ffi::gst_query_new_custom(
                 ffi::GST_QUERY_CUSTOM,
@@ -1020,7 +1020,7 @@ declare_concrete_query!(Allocation, T);
 impl Allocation<Query> {
     #[doc(alias = "gst_query_new_allocation")]
     pub fn new(caps: &crate::Caps, need_pool: bool) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             Self(from_glib_full(ffi::gst_query_new_allocation(
                 caps.as_mut_ptr(),
@@ -1386,7 +1386,7 @@ declare_concrete_query!(AcceptCaps, T);
 impl AcceptCaps<Query> {
     #[doc(alias = "gst_query_new_accept_caps")]
     pub fn new(caps: &crate::Caps) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             Self(from_glib_full(ffi::gst_query_new_accept_caps(
                 caps.as_mut_ptr(),
@@ -1434,7 +1434,7 @@ declare_concrete_query!(Caps, T);
 impl Caps<Query> {
     #[doc(alias = "gst_query_new_caps")]
     pub fn new(filter: Option<&crate::Caps>) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             Self(from_glib_full(ffi::gst_query_new_caps(
                 filter.to_glib_none().0,
diff --git a/gstreamer/src/sample.rs b/gstreamer/src/sample.rs
index c4e62515c..66fe2c5e4 100644
--- a/gstreamer/src/sample.rs
+++ b/gstreamer/src/sample.rs
@@ -63,8 +63,6 @@ impl<'a> SampleBuilder<'a> {
 
     #[must_use = "Building the sample without using it has no effect"]
     pub fn build(self) -> Sample {
-        assert_initialized_main_thread!();
-
         unsafe {
             let info = self
                 .info
@@ -92,6 +90,8 @@ impl<'a> SampleBuilder<'a> {
 
 impl Sample {
     pub fn builder<'a>() -> SampleBuilder<'a> {
+        assert_initialized_main_thread!();
+
         SampleBuilder {
             buffer: None,
             buffer_list: None,
diff --git a/gstreamer/src/segment.rs b/gstreamer/src/segment.rs
index eb2378fdc..4369dab65 100644
--- a/gstreamer/src/segment.rs
+++ b/gstreamer/src/segment.rs
@@ -156,7 +156,6 @@ impl<T: FormattedValueIntrinsic> FormattedSegment<T> {
         stop_type: SeekType,
         stop: impl CompatibleFormattedValue<T>,
     ) -> Option<bool> {
-        skip_assert_initialized!();
         let start = start.try_into_checked_explicit(self.format()).unwrap();
         let stop = stop.try_into_checked_explicit(self.format()).unwrap();
 
diff --git a/gstreamer/src/static_caps.rs b/gstreamer/src/static_caps.rs
index a3262df5f..7919fb7a7 100644
--- a/gstreamer/src/static_caps.rs
+++ b/gstreamer/src/static_caps.rs
@@ -124,7 +124,7 @@ impl<'a> glib::translate::ToGlibPtr<'a, *const ffi::GstStaticCaps> for StaticCap
 impl glib::translate::FromGlibPtrNone<*const ffi::GstStaticCaps> for StaticCaps {
     #[inline]
     unsafe fn from_glib_none(ptr: *const ffi::GstStaticCaps) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         StaticCaps(ptr::NonNull::new_unchecked(ptr as *mut _))
     }
 }
@@ -133,7 +133,7 @@ impl glib::translate::FromGlibPtrNone<*const ffi::GstStaticCaps> for StaticCaps
 impl glib::translate::FromGlibPtrNone<*mut ffi::GstStaticCaps> for StaticCaps {
     #[inline]
     unsafe fn from_glib_none(ptr: *mut ffi::GstStaticCaps) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         StaticCaps(ptr::NonNull::new_unchecked(ptr))
     }
 }
@@ -142,7 +142,7 @@ impl glib::translate::FromGlibPtrNone<*mut ffi::GstStaticCaps> for StaticCaps {
 impl glib::translate::FromGlibPtrBorrow<*mut ffi::GstStaticCaps> for StaticCaps {
     #[inline]
     unsafe fn from_glib_borrow(ptr: *mut ffi::GstStaticCaps) -> Borrowed<Self> {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         Borrowed::new(StaticCaps(ptr::NonNull::new_unchecked(ptr)))
     }
 }
diff --git a/gstreamer/src/static_pad_template.rs b/gstreamer/src/static_pad_template.rs
index 9db74f931..561f3f831 100644
--- a/gstreamer/src/static_pad_template.rs
+++ b/gstreamer/src/static_pad_template.rs
@@ -160,7 +160,7 @@ impl<'a> glib::translate::ToGlibPtr<'a, *const ffi::GstStaticPadTemplate> for St
 impl glib::translate::FromGlibPtrNone<*const ffi::GstStaticPadTemplate> for StaticPadTemplate {
     #[inline]
     unsafe fn from_glib_none(ptr: *const ffi::GstStaticPadTemplate) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         StaticPadTemplate(ptr::NonNull::new_unchecked(ptr as *mut _))
     }
 }
@@ -169,7 +169,7 @@ impl glib::translate::FromGlibPtrNone<*const ffi::GstStaticPadTemplate> for Stat
 impl glib::translate::FromGlibPtrNone<*mut ffi::GstStaticPadTemplate> for StaticPadTemplate {
     #[inline]
     unsafe fn from_glib_none(ptr: *mut ffi::GstStaticPadTemplate) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         StaticPadTemplate(ptr::NonNull::new_unchecked(ptr))
     }
 }
@@ -178,7 +178,7 @@ impl glib::translate::FromGlibPtrNone<*mut ffi::GstStaticPadTemplate> for Static
 impl glib::translate::FromGlibPtrBorrow<*mut ffi::GstStaticPadTemplate> for StaticPadTemplate {
     #[inline]
     unsafe fn from_glib_borrow(ptr: *mut ffi::GstStaticPadTemplate) -> Borrowed<Self> {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         Borrowed::new(StaticPadTemplate(ptr::NonNull::new_unchecked(ptr)))
     }
 }
diff --git a/gstreamer/src/structure.rs b/gstreamer/src/structure.rs
index 489c34c66..4deaac5bc 100644
--- a/gstreamer/src/structure.rs
+++ b/gstreamer/src/structure.rs
@@ -51,7 +51,7 @@ unsafe impl Sync for Structure {}
 impl Structure {
     #[doc(alias = "gst_structure_new")]
     pub fn builder(name: &str) -> Builder {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Builder::new(name)
     }
 
@@ -60,14 +60,14 @@ impl Structure {
         assert_initialized_main_thread!();
         unsafe {
             let ptr = ffi::gst_structure_new_empty(name.to_glib_none().0);
-            assert!(!ptr.is_null());
+            debug_assert!(!ptr.is_null());
             Structure(ptr::NonNull::new_unchecked(ptr))
         }
     }
 
     #[doc(alias = "gst_structure_new")]
     pub fn new(name: &str, values: &[(&str, &(dyn ToSendValue + Sync))]) -> Structure {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut structure = Structure::new_empty(name);
 
         for &(f, v) in values {
@@ -82,7 +82,7 @@ impl Structure {
         name: &str,
         iter: impl IntoIterator<Item = (&'a str, SendValue)>,
     ) -> Structure {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         let mut structure = Structure::new_empty(name);
 
         iter.into_iter()
@@ -135,7 +135,7 @@ impl Clone for Structure {
     fn clone(&self) -> Self {
         unsafe {
             let ptr = ffi::gst_structure_copy(self.0.as_ref());
-            assert!(!ptr.is_null());
+            debug_assert!(!ptr.is_null());
             Structure(ptr::NonNull::new_unchecked(ptr))
         }
     }
@@ -219,7 +219,7 @@ impl ToOwned for StructureRef {
     fn to_owned(&self) -> Structure {
         unsafe {
             let ptr = ffi::gst_structure_copy(&self.0);
-            assert!(!ptr.is_null());
+            debug_assert!(!ptr.is_null());
             Structure(ptr::NonNull::new_unchecked(ptr))
         }
     }
@@ -277,9 +277,9 @@ impl<'a> ToGlibPtrMut<'a, *mut ffi::GstStructure> for Structure {
 impl FromGlibPtrNone<*const ffi::GstStructure> for Structure {
     #[inline]
     unsafe fn from_glib_none(ptr: *const ffi::GstStructure) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         let ptr = ffi::gst_structure_copy(ptr);
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         Structure(ptr::NonNull::new_unchecked(ptr))
     }
 }
@@ -287,9 +287,9 @@ impl FromGlibPtrNone<*const ffi::GstStructure> for Structure {
 impl FromGlibPtrNone<*mut ffi::GstStructure> for Structure {
     #[inline]
     unsafe fn from_glib_none(ptr: *mut ffi::GstStructure) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         let ptr = ffi::gst_structure_copy(ptr);
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         Structure(ptr::NonNull::new_unchecked(ptr))
     }
 }
@@ -297,7 +297,7 @@ impl FromGlibPtrNone<*mut ffi::GstStructure> for Structure {
 impl FromGlibPtrFull<*const ffi::GstStructure> for Structure {
     #[inline]
     unsafe fn from_glib_full(ptr: *const ffi::GstStructure) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         Structure(ptr::NonNull::new_unchecked(ptr as *mut ffi::GstStructure))
     }
 }
@@ -305,7 +305,7 @@ impl FromGlibPtrFull<*const ffi::GstStructure> for Structure {
 impl FromGlibPtrFull<*mut ffi::GstStructure> for Structure {
     #[inline]
     unsafe fn from_glib_full(ptr: *mut ffi::GstStructure) -> Self {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
         Structure(ptr::NonNull::new_unchecked(ptr))
     }
 }
@@ -404,14 +404,14 @@ unsafe impl Sync for StructureRef {}
 impl StructureRef {
     #[inline]
     pub unsafe fn from_glib_borrow<'a>(ptr: *const ffi::GstStructure) -> &'a StructureRef {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
 
         &*(ptr as *mut StructureRef)
     }
 
     #[inline]
     pub unsafe fn from_glib_borrow_mut<'a>(ptr: *mut ffi::GstStructure) -> &'a mut StructureRef {
-        assert!(!ptr.is_null());
+        debug_assert!(!ptr.is_null());
 
         &mut *(ptr as *mut StructureRef)
     }
@@ -631,7 +631,7 @@ impl StructureRef {
 
         unsafe {
             let field_name = ffi::gst_structure_nth_field_name(&self.0, idx);
-            assert!(!field_name.is_null());
+            debug_assert!(!field_name.is_null());
 
             Some(CStr::from_ptr(field_name).to_str().unwrap())
         }
diff --git a/gstreamer/src/tags.rs b/gstreamer/src/tags.rs
index 94b71d344..78c8ac408 100644
--- a/gstreamer/src/tags.rs
+++ b/gstreamer/src/tags.rs
@@ -465,7 +465,7 @@ impl TagListRef {
 
         unsafe {
             let name = ffi::gst_tag_list_nth_tag_name(self.as_ptr(), idx);
-            assert!(!name.is_null());
+            debug_assert!(!name.is_null());
             Some(CStr::from_ptr(name).to_str().unwrap())
         }
     }
diff --git a/gstreamer/src/task_pool.rs b/gstreamer/src/task_pool.rs
index 274596076..4edeb8f79 100644
--- a/gstreamer/src/task_pool.rs
+++ b/gstreamer/src/task_pool.rs
@@ -37,7 +37,7 @@ impl<O: IsA<TaskPool>> TaskPoolExtManual for O {
             );
 
             if !error.is_null() {
-                assert!(handle.is_null());
+                debug_assert!(handle.is_null());
 
                 // Assume that task_pool_trampoline was
                 // not called and will not be called
diff --git a/gstreamer/src/tracer.rs b/gstreamer/src/tracer.rs
index cd2bd9edf..2df9cd293 100644
--- a/gstreamer/src/tracer.rs
+++ b/gstreamer/src/tracer.rs
@@ -11,7 +11,7 @@ impl Tracer {
         name: &str,
         type_: glib::types::Type,
     ) -> Result<(), glib::error::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             glib::result_from_gboolean!(
                 ffi::gst_tracer_register(
diff --git a/gstreamer/src/typefind.rs b/gstreamer/src/typefind.rs
index bdbd2aeaa..d578d17ff 100644
--- a/gstreamer/src/typefind.rs
+++ b/gstreamer/src/typefind.rs
@@ -33,7 +33,7 @@ impl TypeFind {
     where
         F: Fn(&mut TypeFind) + Send + Sync + 'static,
     {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         unsafe {
             let func: Box<F> = Box::new(func);
             let func = Box::into_raw(func);
diff --git a/gstreamer/src/value.rs b/gstreamer/src/value.rs
index 8bf9598a8..a4f187eb4 100644
--- a/gstreamer/src/value.rs
+++ b/gstreamer/src/value.rs
@@ -11,17 +11,17 @@ pub struct Fraction(pub Rational32);
 impl Fraction {
     #[inline]
     pub fn new(num: i32, den: i32) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         (num, den).into()
     }
 
     pub fn approximate_f32(x: f32) -> Option<Self> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Rational32::approximate_float(x).map(|r| r.into())
     }
 
     pub fn approximate_f64(x: f64) -> Option<Self> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Rational32::approximate_float(x).map(|r| r.into())
     }
 
@@ -232,7 +232,7 @@ impl ops::Neg for &Fraction {
 impl From<i32> for Fraction {
     #[inline]
     fn from(x: i32) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Fraction(x.into())
     }
 }
@@ -240,7 +240,7 @@ impl From<i32> for Fraction {
 impl From<(i32, i32)> for Fraction {
     #[inline]
     fn from(x: (i32, i32)) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Fraction(x.into())
     }
 }
@@ -256,7 +256,7 @@ impl From<Fraction> for (i32, i32) {
 impl From<Rational32> for Fraction {
     #[inline]
     fn from(x: Rational32) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Fraction(x)
     }
 }
@@ -357,7 +357,7 @@ impl IntRangeType for i32 {
 
     #[inline]
     fn with_step(min: i32, max: i32, step: i32) -> IntRange<Self> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         assert!(min <= max);
         assert!(step > 0);
@@ -375,7 +375,7 @@ impl IntRangeType for i64 {
 
     #[inline]
     fn with_step(min: i64, max: i64, step: i64) -> IntRange<Self> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         assert!(min <= max);
         assert!(step > 0);
@@ -387,13 +387,13 @@ impl IntRangeType for i64 {
 impl<T: IntRangeType> IntRange<T> {
     #[inline]
     pub fn new(min: T, max: T) -> IntRange<T> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         T::with_min_max(min, max)
     }
 
     #[inline]
     pub fn with_step(min: T, max: T, step: T) -> IntRange<T> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         T::with_step(min, max, step)
     }
 }
@@ -548,7 +548,7 @@ pub struct FractionRange {
 impl FractionRange {
     #[inline]
     pub fn new<T: Into<Fraction>, U: Into<Fraction>>(min: T, max: U) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         let min = min.into();
         let max = max.into();
@@ -644,7 +644,7 @@ pub struct Bitmask(pub u64);
 impl Bitmask {
     #[inline]
     pub fn new(v: u64) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Bitmask(v)
     }
 }
@@ -783,7 +783,7 @@ impl Array {
     }
 
     pub fn from_values(values: impl IntoIterator<Item = glib::SendValue>) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         Self::new(values)
     }
@@ -817,7 +817,7 @@ impl Array {
 
 impl Default for Array {
     fn default() -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         unsafe {
             let value = glib::Value::for_value_type::<Array>();
@@ -845,7 +845,7 @@ impl AsRef<[glib::SendValue]> for Array {
 
 impl std::iter::FromIterator<glib::SendValue> for Array {
     fn from_iter<T: IntoIterator<Item = glib::SendValue>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Self::from_values(iter)
     }
 }
@@ -903,7 +903,7 @@ unsafe impl<'a> Sync for ArrayRef<'a> {}
 
 impl<'a> ArrayRef<'a> {
     pub fn new(values: &'a [glib::SendValue]) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         Self(values)
     }
@@ -1010,7 +1010,7 @@ impl List {
     }
 
     pub fn from_values(values: impl IntoIterator<Item = glib::SendValue>) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         Self::new(values)
     }
@@ -1044,7 +1044,7 @@ impl List {
 
 impl Default for List {
     fn default() -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         unsafe {
             let value = glib::Value::for_value_type::<List>();
@@ -1072,7 +1072,7 @@ impl AsRef<[glib::SendValue]> for List {
 
 impl std::iter::FromIterator<glib::SendValue> for List {
     fn from_iter<T: IntoIterator<Item = glib::SendValue>>(iter: T) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
         Self::from_values(iter)
     }
 }
@@ -1130,7 +1130,7 @@ unsafe impl<'a> Sync for ListRef<'a> {}
 
 impl<'a> ListRef<'a> {
     pub fn new(values: &'a [glib::SendValue]) -> Self {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         Self(values)
     }
@@ -1384,7 +1384,7 @@ impl GstValueExt for glib::Value {
     }
 
     fn deserialize(s: &str, type_: glib::Type) -> Result<glib::Value, glib::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         unsafe {
             let mut value = glib::Value::from_type(type_);
@@ -1406,7 +1406,7 @@ impl GstValueExt for glib::Value {
         s: &str,
         pspec: &glib::ParamSpec,
     ) -> Result<glib::Value, glib::BoolError> {
-        assert_initialized_main_thread!();
+        skip_assert_initialized!();
 
         unsafe {
             let mut value = glib::Value::from_type_unchecked(pspec.value_type());