[MPlayer-users] composite input a/v sync issue
Miroslav Rovis
m.rovis at inet.hr
Thu Nov 5 17:50:08 CET 2009
>> mencoder -fps 25 -ofps 25 -noskip -mc 0 -vf harddup,softskip tv:// -tv
>> input=1:driver=v4l2:device=/dev/video0:normid=3:input=1:alsa:adevice=hw.0:audiorate=48000:amode=1:width=768:height=576
>> -ovc lavc -lavcopts vcodec=mpeg4:autoaspect:vbitrate=8000 -oac mp3lame
>> -srate 48000 -lameopts cbr:preset=standard -endpos 100 -o VHS155_`date
>> +%H%M%S`.avi
>>
>
> While I do not know if it can even work without, -fps 25 tells
> MPlayer/mencoder to assume that there are always exactly 25 frames per
> second. If the capture card loses sync during the bad sections and does
> not produce any frames that is of course not going to work out at all.
>
>
Thanks for trying to help. 25 frames per second is the PAL standard,
it's by the book and by the google that anyone, as far as I had searched
earlier, capturing PAL VHS on composite input do (some even recommend
-fps 50)...
I guess the Windoze also have 25 fps assembled in the program that
captures composite...
What command do you use for capturing VHS on composite/S-Video input of
your card?
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