[gst-devel] Slight audio/video sync problem - any suggestions?

[Jason L. Buberel]

Oddly enough, that makes things worse :(

Here is what I have confirmed - the following command will result in a 
VERY clear high quality audio-only recording on my configuration:

 > gst-launch-0.10 alsasrc device="hw:1,0" ! 
audio/x-raw-int,rate=16000,channels=1,depth=16 ! audioconvert ! 
vorbisenc ! oggmux ! filesink location=audio-only.ogg

Which you can hear:

http://www.buberel.org/audio-only.ogg

But when I use Nei's command below, which has essentially the same audio 
parameters but with the additional 'queue' element to record audio and 
video, I see many of the following error messages:

WARNING: from element /pipeline0/alsasrc0: Can't record audio fast enough
Additional debug info:
gstbaseaudiosrc.c(603): gst_base_audio_src_create (): /pipeline0/alsasrc0:
dropped 13600 samples
WARNING: from element /pipeline0/alsasrc0: Can't record audio fast enough
Additional debug info:
gstbaseaudiosrc.c(603): gst_base_audio_src_create (): /pipeline0/alsasrc0:
dropped 12000 samples
WARNING: from element /pipeline0/alsasrc0: Can't record audio fast enough
Additional debug info:

I am going to work on an ascii-art diagram of this pipeline in the hopes 
that it will help others see the mistake I am making.

-jason


Nie Jun wrote:
> gst-launch-0.10 v4l2src ! queue ! videorate !
> video/x-raw-yuv,width=800,height=600,framerate=15/1  !
> ffmpegcolorspace ! theoraenc ! queue ! oggmux name=mux alsasrc
> device="hw:1,0"  ! audiorate !
> audio/x-raw-int,rate=16000,channels=1,depth=16 ! queue ! audioconvert
> ! vorbisenc ! QUEUE ! mux. mux. ! queue ! filesink sync=true
> location=test.ogg
>
> hope it helps you.
>   
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