diff --git a/gstreamer-audio/src/subclass/audio_decoder.rs b/gstreamer-audio/src/subclass/audio_decoder.rs
index e07e1c994..3a6bff281 100644
--- a/gstreamer-audio/src/subclass/audio_decoder.rs
+++ b/gstreamer-audio/src/subclass/audio_decoder.rs
@@ -21,6 +21,8 @@ use gst_base;
 use std::mem;
 use std::ptr;
 
+use crate::prelude::*;
+
 use AudioDecoder;
 use AudioDecoderClass;
 
@@ -414,7 +416,7 @@ impl<T: AudioDecoderImpl + ObjectImpl> AudioDecoderImplExt for T {
             (*parent_class)
                 .getcaps
                 .map(|f| from_glib_full(f(element.to_glib_none().0, filter.to_glib_none().0)))
-                .unwrap_or(None)
+                .unwrap_or(element.proxy_getcaps(None, filter))
         }
     }
 
diff --git a/gstreamer-audio/src/subclass/audio_encoder.rs b/gstreamer-audio/src/subclass/audio_encoder.rs
index a1c47c08f..056a46e2f 100644
--- a/gstreamer-audio/src/subclass/audio_encoder.rs
+++ b/gstreamer-audio/src/subclass/audio_encoder.rs
@@ -19,6 +19,8 @@ use gst::MiniObject;
 
 use std::ptr;
 
+use crate::prelude::*;
+
 use AudioEncoder;
 use AudioEncoderClass;
 use AudioInfo;
@@ -363,7 +365,7 @@ impl<T: AudioEncoderImpl + ObjectImpl> AudioEncoderImplExt for T {
             (*parent_class)
                 .getcaps
                 .map(|f| from_glib_full(f(element.to_glib_none().0, filter.to_glib_none().0)))
-                .unwrap_or(None)
+                .unwrap_or(element.proxy_getcaps(None, filter))
         }
     }
 
diff --git a/gstreamer-video/src/subclass/video_decoder.rs b/gstreamer-video/src/subclass/video_decoder.rs
index 959610cc9..cb8984d31 100644
--- a/gstreamer-video/src/subclass/video_decoder.rs
+++ b/gstreamer-video/src/subclass/video_decoder.rs
@@ -19,6 +19,7 @@ use gst::subclass::prelude::*;
 use gst::MiniObject;
 use gst_base;
 
+use crate::prelude::*;
 use video_codec_state::{Readable, VideoCodecState};
 use VideoCodecFrame;
 use VideoDecoder;
@@ -404,7 +405,7 @@ impl<T: VideoDecoderImpl + ObjectImpl> VideoDecoderImplExt for T {
             (*parent_class)
                 .getcaps
                 .map(|f| from_glib_full(f(element.to_glib_none().0, filter.to_glib_none().0)))
-                .unwrap_or(None)
+                .unwrap_or(element.proxy_getcaps(None, filter))
         }
     }
 
diff --git a/gstreamer-video/src/subclass/video_encoder.rs b/gstreamer-video/src/subclass/video_encoder.rs
index 4fee1fea8..f4c9cb731 100644
--- a/gstreamer-video/src/subclass/video_encoder.rs
+++ b/gstreamer-video/src/subclass/video_encoder.rs
@@ -18,6 +18,7 @@ use gst;
 use gst::subclass::prelude::*;
 use gst::MiniObject;
 
+use crate::prelude::*;
 use video_codec_state::{Readable, VideoCodecState};
 use VideoCodecFrame;
 use VideoEncoder;
@@ -340,7 +341,7 @@ impl<T: VideoEncoderImpl + ObjectImpl> VideoEncoderImplExt for T {
             (*parent_class)
                 .getcaps
                 .map(|f| from_glib_full(f(element.to_glib_none().0, filter.to_glib_none().0)))
-                .unwrap_or(None)
+                .unwrap_or(element.proxy_getcaps(None, filter))
         }
     }