[MPlayer-users] A/V sync problem when appending AVIs

[Alexander Noé]

Daniele Forghieri wrote:

> Matthias Czapla wrote:
>
>> Hello!
>>
>> I have created three AVI files with (for each one)
>>
>> mencoder -aid 128 -srate 44100 -oac mp3lame -lameopts cbr:br=112:aq=2 \
>> -ovc frameno -o frameno.avi -dvd-device some_image.bin dvd://1
>> for i in 1 2; do
>>     mencoder -oac copy -ovc lavc \
>>        -lavcopts vcodec=mpeg4:mbd=2:trell:vbitrate=509:vpass=$i \
>>     -sws 2 -vf crop=672:316:24:130,scale=544:240 \
>>     -dvd-device some_image.bin dvd://1
>> done
>>
>> Each one plays fine as usual, but when appending them via
>>
>> cat 1.avi 2.avi 3.avi | mencoder -noidx -oac copy -ovc copy -o bla.avi -
>>
>> I get A/V desyncronized after the point where the second file starts. 
>> Before
>> that point theres no problem. I already tried to append them with 
>> avidemux
>> but this produced exactly the same result (i.e. A/V desync). I have 
>> often
>> done this before without any problems but this time it strikes me.
>>
>> Regards
>> Matthias
>>
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>> MPlayer-users at mplayerhq.hu
>> http://mplayerhq.hu/mailman/listinfo/mplayer-users
>>
>>  
>>
> mp3 uses packet of sound of, say, 250 millisec.

26122µs.



Alex