audio / video sync pb with WebM

[Parisson]

Hi !

I get a time shift between audio and video when encoding live scene into WebM
(vp8 + vorbis). This doesn't happen using OGG, sync is perfect in this case
(theora + vorbis).

Here is the pipeline :

gst-launch v4l2src device=/dev/video0 ! video/x-raw-yuv,width=640, height=480 \
        ! queue ! ffmpegcolorspace ! queue ! vp8enc speed=2 threads=4 quality=5 ! queue
! mux. \
        alsasrc device=hw:0,0 ! audio/x-raw-int,rate=44100,channels=2,depth=16 \
        ! queue ! audioconvert ! vorbisenc ! queue ! mux. \
        webmmux name=mux streamable=true ! filesink location=/var/www/test/test.webm

Can someone reproduce this and/or is there any known issue ?

Thanks,
Guillaume
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[Parisson]

Did anyone manage to get proper sync using webm for live steaming ?

G

On 02/10/2011 01:17, Parisson wrote:

> Hi !
>
> I get a time shift between audio and video when encoding live scene into WebM
> (vp8 + vorbis). This doesn't happen using OGG, sync is perfect in this case
> (theora + vorbis).
>
> Here is the pipeline :
>
> gst-launch v4l2src device=/dev/video0 ! video/x-raw-yuv,width=640, height=480 \
> ! queue ! ffmpegcolorspace ! queue ! vp8enc speed=2 threads=4 quality=5 ! queue
> ! mux. \
> alsasrc device=hw:0,0 ! audio/x-raw-int,rate=44100,channels=2,depth=16 \
> ! queue ! audioconvert ! vorbisenc ! queue ! mux. \
> webmmux name=mux streamable=true ! filesink location=/var/www/test/test.webm
>
> Can someone reproduce this and/or is there any known issue ?
>
> Thanks,
> Guillaume
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>

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