[gst-devel] Few questions about status of gstreamer

[Maxim Levitsky]

On Tue, 2009-01-27 at 00:33 +0100, Andoni Morales wrote:
>         PS: do you know whenever gstreamer can add an index to avi
>         file?
>         
>         I use this command to record a live asf stream:
>         
>         
>         > #source description
>         > export SOURCE_PROTOCOL=mmssrc
>         > export SOURCE_DEMUXER=asfdemux
>         > export SOURCE_AUDIO_CODEC=ffdec_wmav2
>         > export SOURCE_VIDEO_CODEC=ffdec_wmv3
>         >
>         > #destanation description
>         > export DEST_PROTOCOL=filesink
>         > export DEST_MUXER=avimux
>         > export DEST_AUDIO_CODEC=lame
>         > export DEST_VIDEO_CODEC=xvidenc
>         
>         > gst-launch
>                                                    \
>         >       $SOURCE_PROTOCOL location=$SOURCE_LOCATION ! queue !
>         $SOURCE_DEMUXER name=demuxer               \
>         >
>         \
>         >       demuxer.   ! queue ! $SOURCE_VIDEO_CODEC ! videorate !
>         postproc_default ! tee name=raw_video    \
>         >       demuxer.   ! queue ! $SOURCE_AUDIO_CODEC ! tee
>         name=raw_audio                                   \
>         >
>         \
>         >       raw_video. ! queue leaky=1 ! $DEST_VIDEO_CODEC !
>         queue ! $DEST_MUXER name=muxer                 \
>         >       raw_audio. ! queue leaky=1 ! $DEST_AUDIO_CODEC !
>         queue ! muxer.                                 \
>         >
>         \
>         >       raw_video. ! queue ! gconfvideosink
>         \
>         >       raw_audio. ! queue ! gconfaudiosink
>         \
>         >
>         \
>         >       muxer.     ! $DEST_PROTOCOL location=$DEST_LOCATION
>         \
>         
>         It works, but resulting file can be seeking to non key-frames,
>         which
>         obliviously make seeking very unpleasant.
>         (since muxers are limited to such small number of codecs,
>         can't they
>         know which frames are key and which not ?)
>  
> You just have to fire an EOS event to finalize the file and build the
> index 
> 

Is there a way to do so with gst-launch? (I guess no)
I write an app using this pipeline someday.


Best regards,
	Maxim Levitsky