diff --git a/gst/quicktime/gstqtmuxmap.c b/gst/quicktime/gstqtmuxmap.c
index f690faa2dd..c2715e46d5 100644
--- a/gst/quicktime/gstqtmuxmap.c
+++ b/gst/quicktime/gstqtmuxmap.c
@@ -62,6 +62,7 @@
 
 #define H264_CAPS \
   "video/x-h264, " \
+  "stream-format = (string) avc-sample, " \
   COMMON_VIDEO_CAPS
 
 #define MPEG4V_CAPS \