[MPlayer-users] audio stream dumping question
Massimiliano Cirri
m.cirri at ing.unifi.it
Wed Oct 20 17:59:13 CEST 2004
I would like to know why the audio streams you can obtain issuing the
following commands are different:
mplayer piratesofcaribbean.vob -aid 128 -dumpaudio -dumpfile pirates.ac3_1
mencoder piratesofcaribbean.vob -ovc lavc -oac copy -lavcopts
vcodec=mpeg2video:vbitrate=3682:mbd=2:vpass=1 -srate 48000 -of mpeg
-ofps 25 -o /dev/null
mencoder piratesofcaribbean.vob -ovc lavc -oac copy -lavcopts
vcodec=mpeg2video:vbitrate=3682:mbd=2:vpass=2 -srate 48000 -of mpeg
-ofps 25 -o pirates.mpg
mplayer pirates.mpg -dumpaudio -dumpfile pirates.ac3_2
if I compares the two pirates.ac3 they have different size. If I mplex the pirates.ac3_2 with the video stream of pirates.mpeg I can obtain a sync result, with the other the result is out of sync.
I hope that somebody could explain me the difference.
regards, Massimiliano.
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