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