[MEncoder-users] sound (or frame?) async problem
szazs at mm.bme.hu
Mon Dec 19 11:29:05 CET 2005
I am just trying to record videos with a Pinnacle USB2 device.
It's a pity that I could not produce sound with mplayer
(following the hints of http://www.linuxtv.org/v4lwiki/index.php/Em2820
in vain -- if anybody can also help about this, it is welcome). Thus
I used xawtv for recording. However, this succeeded only in raw format
which was set to YUY2 and a separate wav file.
So I tried to create an avi with mencoder, like the following:
mencoder -rawvideo on:w=384:h=288:yuy2
-oac lavc -ovc lavc -lavcopts vcodec=mpeg4:vbitrate=1800:\
-audiofile audio.wav -o test.avi video.raw
In the first 15 secs of the encoding "Skipping frame!" was reported cca.
10 times. And in the created avi there is a small but annoying
difference between the video and the sound.
What did I wrong or what should be done in order to eliminate this problem?
PS: playing the recorded video and sound like:
mplayer -rawvideo on:w=384:h=288:yuy2 -audiofile audio.wav video.raw
does not produce this slip. That's why I think that it is because of the
skipped frames (the frames are showed earlier than the corresponding
PS1: please Cc your email also to szazs AT mm DOT bme DOT hu.
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