diff --git a/gstreamer/src/buffer.rs b/gstreamer/src/buffer.rs
index 0e953bf96..a3e0be964 100644
--- a/gstreamer/src/buffer.rs
+++ b/gstreamer/src/buffer.rs
@@ -72,7 +72,7 @@ impl Buffer {
         drop(slice);
     }
 
-    pub fn from_mut_slice<T: AsMut<[u8]> + Send + 'static>(slice: T) -> Option<Self> {
+    pub fn from_mut_slice<T: AsMut<[u8]> + Send + 'static>(slice: T) -> Self {
         assert_initialized_main_thread!();
 
         unsafe {
@@ -94,7 +94,7 @@ impl Buffer {
         }
     }
 
-    pub fn from_slice<T: AsRef<[u8]> + Send + 'static>(slice: T) -> Option<Self> {
+    pub fn from_slice<T: AsRef<[u8]> + Send + 'static>(slice: T) -> Self {
         assert_initialized_main_thread!();
 
         unsafe {
@@ -684,7 +684,7 @@ mod tests {
     fn test_writability() {
         ::init().unwrap();
 
-        let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+        let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
         {
             let data = buffer.map_readable().unwrap();
             assert_eq!(data.as_slice(), vec![1, 2, 3, 4].as_slice());
diff --git a/gstreamer/src/buffer_serde.rs b/gstreamer/src/buffer_serde.rs
index 34c628f29..958e7a0a4 100644
--- a/gstreamer/src/buffer_serde.rs
+++ b/gstreamer/src/buffer_serde.rs
@@ -57,7 +57,7 @@ struct BufferDe {
 
 impl From<BufferDe> for Buffer {
     fn from(buf_de: BufferDe) -> Self {
-        let mut buffer = Buffer::from_mut_slice(buf_de.buffer.to_vec()).unwrap();
+        let mut buffer = Buffer::from_mut_slice(buf_de.buffer.to_vec());
         {
             let buffer = buffer.get_mut().unwrap();
             buffer.set_pts(buf_de.pts);
@@ -90,7 +90,7 @@ mod tests {
     fn test_serialize() {
         ::init().unwrap();
 
-        let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+        let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
         {
             let buffer = buffer.get_mut().unwrap();
             buffer.set_pts(1.into());
@@ -230,7 +230,7 @@ mod tests {
     fn test_serde_roundtrip() {
         ::init().unwrap();
 
-        let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+        let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
         {
             let buffer = buffer.get_mut().unwrap();
             buffer.set_pts(1.into());
diff --git a/gstreamer/src/bufferlist_serde.rs b/gstreamer/src/bufferlist_serde.rs
index 2b10782af..d6d82797c 100644
--- a/gstreamer/src/bufferlist_serde.rs
+++ b/gstreamer/src/bufferlist_serde.rs
@@ -80,7 +80,7 @@ mod tests {
         {
             let buffer_list = buffer_list.get_mut().unwrap();
 
-            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
             {
                 let buffer = buffer.get_mut().unwrap();
                 buffer.set_pts(1.into());
@@ -90,7 +90,7 @@ mod tests {
             }
             buffer_list.add(buffer);
 
-            let mut buffer = Buffer::from_slice(vec![5, 6]).unwrap();
+            let mut buffer = Buffer::from_slice(vec![5, 6]);
             {
                 let buffer = buffer.get_mut().unwrap();
                 buffer.set_pts(5.into());
@@ -196,7 +196,7 @@ mod tests {
         {
             let buffer_list = buffer_list.get_mut().unwrap();
 
-            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
             {
                 let buffer = buffer.get_mut().unwrap();
                 buffer.set_pts(1.into());
@@ -206,7 +206,7 @@ mod tests {
             }
             buffer_list.add(buffer);
 
-            let mut buffer = Buffer::from_slice(vec![5, 6]).unwrap();
+            let mut buffer = Buffer::from_slice(vec![5, 6]);
             {
                 let buffer = buffer.get_mut().unwrap();
                 buffer.set_pts(5.into());
diff --git a/gstreamer/src/sample_serde.rs b/gstreamer/src/sample_serde.rs
index c3be5c8d7..1fe5953ef 100644
--- a/gstreamer/src/sample_serde.rs
+++ b/gstreamer/src/sample_serde.rs
@@ -93,7 +93,7 @@ mod tests {
         pretty_config.new_line = "".to_string();
 
         let sample = {
-            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
             {
                 let buffer = buffer.get_mut().unwrap();
                 buffer.set_pts(1.into());
@@ -179,7 +179,7 @@ mod tests {
         );
 
         let sample = {
-            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
             {
                 let buffer = buffer.get_mut().unwrap();
                 buffer.set_pts(1.into());
@@ -323,7 +323,7 @@ mod tests {
 
         // Segment present
         let sample = {
-            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+            let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
             {
                 let buffer = buffer.get_mut().unwrap();
                 buffer.set_pts(1.into());
diff --git a/gstreamer/src/tags_serde.rs b/gstreamer/src/tags_serde.rs
index dd388a0b9..e37c15d4f 100644
--- a/gstreamer/src/tags_serde.rs
+++ b/gstreamer/src/tags_serde.rs
@@ -270,7 +270,7 @@ mod tests {
             tags.add::<DateTime>(&::DateTime::new_ymd(2018, 5, 28), TagMergeMode::Append);
 
             let sample = {
-                let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+                let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
                 {
                     let buffer = buffer.get_mut().unwrap();
                     buffer.set_offset(0);
@@ -452,7 +452,7 @@ mod tests {
             tags.add::<DateTime>(&::DateTime::new_ymd(2018, 5, 28), TagMergeMode::Append);
 
             let sample = {
-                let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]).unwrap();
+                let mut buffer = Buffer::from_slice(vec![1, 2, 3, 4]);
                 {
                     let buffer = buffer.get_mut().unwrap();
                     buffer.set_offset(0);