mpegtsmux framerate 180000 fps

Martijn Grendelman martijn at iphion.nl
Sun Apr 8 13:27:38 PDT 2012


Nobody? Should I provide more information?

Best regards,
Martijn Grendelman



On 04/05/2012 11:43 AM, Martijn Grendelman wrote:
> Hi,
> 
> I am trying to remux an mp4 file (H.264/AAC) into a MPEG-TS with the
> following pipeline:
> 
> gst-launch-0.10 -v filesrc location=$file ! qtdemux name=demux
> demux.video_00 ! queue ! mpegtsmux name=mux ! filesink location=$file.ts
> demux.audio_00 ! queue ! mux.
> 
> The pipeline seems to run fine and I get the expected file. However...
> 
> In the resulting file, the framerate is way off. Both VLC and mplayer
> report it as 180000. VLC plays the video really badly, and even seems to
> play frames/buffers in the wrong order (video hops back and forth really
> fast). Mplayer plays the video smoothly, but at incredible speed.
> 
> Gstreamer (with playbin2) seems to think the framerate is 90000:
> 
> /GstPlayBin2:playbin20/GstURIDecodeBin:uridecodebin0/GstDecodeBin2:decodebin20/ffdec_h264:ffdec_h2640.GstPad:src:
> caps = video/x-raw-yuv, width=(int)704, height=(int)304,
> framerate=(fraction)90000/1, format=(fourcc)I420, interlaced=(boolean)false
> 
> The original file is reported as having a framerate of 25 in all three
> programs.
> 
> Is something wrong with my pipeline? Is there a way to force a specific
> framerate on the mpegtsmuxer output? I was thinking about a capsfilter,
> but can't make out where to place it.
> 
> Help is greatly appreciated.
> 
> Best regards,
> Martijn Grendelman
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