diff --git a/sys/v4l2codecs/gstv4l2codech264dec.c b/sys/v4l2codecs/gstv4l2codech264dec.c
index d76bea5715..7804b87881 100644
--- a/sys/v4l2codecs/gstv4l2codech264dec.c
+++ b/sys/v4l2codecs/gstv4l2codech264dec.c
@@ -1401,13 +1401,29 @@ gst_v4l2_codec_h264_dec_subclass_init (GstV4l2CodecH264DecClass * klass,
 }
 
 void
-gst_v4l2_codec_h264_dec_register (GstPlugin * plugin,
+gst_v4l2_codec_h264_dec_register (GstPlugin * plugin, GstV4l2Decoder * decoder,
     GstV4l2CodecDevice * device, guint rank)
 {
+  GstCaps *src_caps;
+
+  if (!gst_v4l2_decoder_set_sink_fmt (decoder, V4L2_PIX_FMT_H264_SLICE,
+          320, 240, 8))
+    return;
+  src_caps = gst_v4l2_decoder_enum_src_formats (decoder);
+
+  if (gst_caps_is_empty (src_caps)) {
+    GST_WARNING ("Not registering H264 decoder since it produces no "
+        "supported format");
+    goto done;
+  }
+
   gst_v4l2_decoder_register (plugin,
       GST_TYPE_V4L2_CODEC_H264_DEC,
       (GClassInitFunc) gst_v4l2_codec_h264_dec_subclass_init,
       gst_mini_object_ref (GST_MINI_OBJECT (device)),
       (GInstanceInitFunc) gst_v4l2_codec_h264_dec_subinit,
       "v4l2sl%sh264dec", device, rank, NULL);
+
+done:
+  gst_caps_unref (src_caps);
 }
diff --git a/sys/v4l2codecs/gstv4l2codech264dec.h b/sys/v4l2codecs/gstv4l2codech264dec.h
index ccce690e4d..f327311fcd 100644
--- a/sys/v4l2codecs/gstv4l2codech264dec.h
+++ b/sys/v4l2codecs/gstv4l2codech264dec.h
@@ -45,6 +45,7 @@ struct _GstV4l2CodecH264DecClass
 
 GType gst_v4l2_codec_h264_dec_get_type (void);
 void  gst_v4l2_codec_h264_dec_register (GstPlugin * plugin,
+                                        GstV4l2Decoder * decoder,
                                         GstV4l2CodecDevice * device,
                                         guint rank);
 
diff --git a/sys/v4l2codecs/gstv4l2codecvp8dec.c b/sys/v4l2codecs/gstv4l2codecvp8dec.c
index 9acdbfdabc..4abcbfcae6 100644
--- a/sys/v4l2codecs/gstv4l2codecvp8dec.c
+++ b/sys/v4l2codecs/gstv4l2codecvp8dec.c
@@ -872,10 +872,22 @@ static void gst_v4l2_codec_vp8_alpha_decode_bin_subclass_init
 }
 
 void
-gst_v4l2_codec_vp8_dec_register (GstPlugin * plugin,
+gst_v4l2_codec_vp8_dec_register (GstPlugin * plugin, GstV4l2Decoder * decoder,
     GstV4l2CodecDevice * device, guint rank)
 {
   gchar *element_name;
+  GstCaps *src_caps, *alpha_caps;
+
+  if (!gst_v4l2_decoder_set_sink_fmt (decoder, V4L2_PIX_FMT_VP8_FRAME,
+          320, 240, 8))
+    return;
+  src_caps = gst_v4l2_decoder_enum_src_formats (decoder);
+
+  if (gst_caps_is_empty (src_caps)) {
+    GST_WARNING ("Not registering VP8 decoder since it produces no "
+        "supported format");
+    goto done;
+  }
 
   gst_v4l2_decoder_register (plugin, GST_TYPE_V4L2_CODEC_VP8_DEC,
       (GClassInitFunc) gst_v4l2_codec_vp8_dec_subclass_init,
@@ -883,9 +895,18 @@ gst_v4l2_codec_vp8_dec_register (GstPlugin * plugin,
       (GInstanceInitFunc) gst_v4l2_codec_vp8_dec_subinit,
       "v4l2sl%svp8dec", device, rank, &element_name);
 
-  if (element_name) {
+  if (!element_name)
+    goto done;
+
+  alpha_caps = gst_caps_from_string ("video/x-raw,format={I420, NV12}");
+
+  if (gst_caps_can_intersect (src_caps, alpha_caps))
     gst_v4l2_codec_alpha_decode_bin_register (plugin,
         (GClassInitFunc) gst_v4l2_codec_vp8_alpha_decode_bin_subclass_init,
         element_name, "v4l2slvp8%salphadecodebin", device, rank);
-  }
+
+  gst_caps_unref (alpha_caps);
+
+done:
+  gst_caps_unref (src_caps);
 }
diff --git a/sys/v4l2codecs/gstv4l2codecvp8dec.h b/sys/v4l2codecs/gstv4l2codecvp8dec.h
index 8233686ffe..c74cc78182 100644
--- a/sys/v4l2codecs/gstv4l2codecvp8dec.h
+++ b/sys/v4l2codecs/gstv4l2codecvp8dec.h
@@ -45,8 +45,9 @@ struct _GstV4l2CodecVp8DecClass
 
 GType gst_v4l2_codec_vp8_dec_get_type (void);
 void  gst_v4l2_codec_vp8_dec_register (GstPlugin * plugin,
-                                        GstV4l2CodecDevice * device,
-                                        guint rank);
+                                       GstV4l2Decoder * decoder,
+                                       GstV4l2CodecDevice * device,
+                                       guint rank);
 
 G_END_DECLS
 
diff --git a/sys/v4l2codecs/plugin.c b/sys/v4l2codecs/plugin.c
index 91334e7432..8d0c969a8f 100644
--- a/sys/v4l2codecs/plugin.c
+++ b/sys/v4l2codecs/plugin.c
@@ -50,12 +50,14 @@ register_video_decoder (GstPlugin * plugin, GstV4l2CodecDevice * device)
       case V4L2_PIX_FMT_H264_SLICE:
         GST_INFO_OBJECT (decoder, "Registering %s as H264 Decoder",
             device->name);
-        gst_v4l2_codec_h264_dec_register (plugin, device, GST_RANK_PRIMARY + 1);
+        gst_v4l2_codec_h264_dec_register (plugin, decoder, device,
+            GST_RANK_PRIMARY + 1);
         break;
       case V4L2_PIX_FMT_VP8_FRAME:
         GST_INFO_OBJECT (decoder, "Registering %s as VP8 Decoder",
             device->name);
-        gst_v4l2_codec_vp8_dec_register (plugin, device, GST_RANK_PRIMARY + 1);
+        gst_v4l2_codec_vp8_dec_register (plugin, decoder,
+            device, GST_RANK_PRIMARY + 1);
         break;
       default:
         GST_FIXME_OBJECT (decoder, "%" GST_FOURCC_FORMAT " is not supported.",