don't know how to handle video/x-gst-fourcc-dvhp

jin jin at
Fri May 13 14:24:25 PDT 2011


I have an update to this issue. It seems that qtdemux bin doesn't know to 
forward the dvhp codec to an appropriate caps, and defaults to the following 
line in qtdemux.c:

(line 9071 to 9080)
    case GST_MAKE_FOURCC ('k', 'p', 'c', 'd'):
      char *s;

      s = g_strdup_printf ("video/x-gst-fourcc-%" GST_FOURCC_FORMAT,
          GST_FOURCC_ARGS (fourcc));
      caps = gst_caps_new_simple (s, NULL);

I'm going to try to add to this method to properly assign a caps so that 
ffmpeg plugin can pick up on the media with dvhp codec..

As always, any input will be greatly appreciated.


On Thursday 12 May 2011 6:48:07 pm jin wrote:
> Hello,
> I have been successful in using gstreamer and its plugins to play majority
>  of the video file formats within Qt Phonon with gstreamer backend. I'd
>  like to thank all contributors of the gstreamer for creating this
>  fantastic media framework!
> I am able to play most of the Quicktime videos with gst-ffmpeg plugin with
>  an exception to one particular HD Quicktime video. I am able to play the
>  file with ffmpeg just fine, but gstreamer compains that it cannot handle
>  the file.
> Here is my command line pipeline that duplicates the problem:
> ./gst-launch playbin uri=file:///
> And the message I receive:
> Setting pipeline to PAUSED ...
> Pipeline is PREROLLING ...
> ** Message: don't know how to handle video/x-gst-fourcc-dvhp,
>  width=(int)960, height=(int)720, framerate=(fraction)2997/50,
>  pixel-aspect-ratio=(fraction)1/1 Pipeline is PREROLLED ...
> Setting pipeline to PLAYING ...
> New clock: GstAudioSinkClock
> Got EOS from element "playbin0".
> Execution ended after 14914789298 ns.
> Setting pipeline to PAUSED ...
> Setting pipeline to READY ...
> Setting pipeline to NULL ...
> Freeing pipeline ...
> Seeing that ffmpeg already knows how to handle the dvhp codec, I am
>  thinking that ffmpeg plugin is not including the 'video/x-gst-fourcc-dvhp'
>  caps although it can handle it.
> What are your thoughts?
> Any insight would be appreciated.
> Thank you very much!

Soho VFX

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