[gst-devel] multiplexing audio and video

[Michal Benes]

Hi Antonio,

	matroska muxer uses so called push mode on src pad and hevily utilizes
seeking in the output stream. On the other hand, matroskademux activates
the sink pad in pull mode (which much simplified means that it wants to
seek in the input stream). To sum things up, these two elements are
incompatible and can not be joined without changes in both of them.

	You can either try other muxer/demuxer, perhaps more oriented towards
streaming media such as ogg, mpeg-ts or asf (but I am not sure if you
find one that both does what you need and supports raw streams) or
enhance matroska.

	Michal

ANTONIO MARQUES MARQUES píše v Út 20. 11. 2007 v 09:54 +0000:
> Hello to all,
> 
> I am interested in multiplexing audio and video in the same flow. I have
> tried with matroska muxer to multiplex both flows but it does not work.
> I have tried with videotestsrc and audiotestsrc as a first step with the
> following instruction:
> 
> gst-launch videotestsrc ! matroskamux name=mux audiotestsrc ! mux. mux.
> ! matroskademux name=demux demux.video_00 ! ffmpegcolorspace !
> ximagesink demux.audio_00 ! audioconvert ! alsasink
> 
> It fails when activating demuxer sink pad. Any idea for this purpose?
> 
> Thanks in advanced.
> 
> Antonio Marques
> 
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