[MPlayer-users] Audio sync off in NTSC DVD
Wm. Josiah Erikson
josiah at insanetechnology.com
Sun May 25 04:13:57 CEST 2003
Hello all,
(Please cc: me in replies, as I'm not on the list)
I'm trying to rip an NTSC DVD to DivX5 with libavcodec, and the
audio sync is slightly off. I'm using mplayer-0.90 compiled on debian
woody. This is what I'm doing that doesn't work:
mencoder -dvd 1 -alang en -oac mp3lame -ovc lavc -lavcopts
vcodec=mpeg4:vbitrate=1600 -lameopts vbr=3:preset=160 -ofps 23.976 -o
test.avi
I normally do 3pass encoding, but I've been doing 1-pass for debugging
while I'm trying to figure this out. 3-pass gives the same problem, of
course.
I have had this problem with several different DVD's, but not all. This
particular DVD I'm working with at the moment is particularly odd in that
if I start at Chapter 3 or later, the audio sync is fine. Chapters 1 and 2
are off by about a quarter second, however.
I get these while encoding, but I think this is normal:
Pos: 0.2s 4f ( 0%) 0fps Trem: 1min 3mb A-V:0.010 [0:0]
Skipping frame!
Pos: 0.3s 9f ( 0%) 0fps Trem: 1min 3mb A-V:0.027 [0:0]
Skipping frame!
Pos: 0.5s 14f ( 0%) 0fps Trem: 1min 3mb A-V:0.043 [0:0]
Skipping frame!
Pos: 0.7s 19f ( 0%) 0fps Trem: 1min 3mb A-V:0.060 [0:32]
Skipping frame!
Pos: 0.8s 24f ( 0%) 0fps Trem: 1min 3mb A-V:0.077 [0:31]
Skipping frame!
Pos: 0.9s 27f ( 0%) 0fps Trem: 1min 3mb A-V:0.087 [0:32]
Skipping frame!
Pos: 1.0s 29f ( 0%) 0fps Trem: 1min 3mb A-V:0.052 [0:32]
Skipping frame!
Pos: 1.1s 34f ( 0%) 0fps Trem: 1min 3mb A-V:0.068 [0:31]
Skipping frame!
Pos: 1.3s 39f ( 0%) 0fps Trem: 1min 3mb A-V:0.085 [0:32]
Skipping frame!
Pos: 1.3s 40f ( 0%) 0fps Trem: 1min 3mb A-V:0.088 [0:31]
Skipping frame!
Pos: 1.4s 44f ( 0%) 0fps Trem: 1min 2mb A-V:0.060 [0:32]
Skipping frame!
Pos: 1.6s 49f ( 0%) 0fps Trem: 1min 2mb A-V:0.077 [0:31]
Skipping frame!
Pos: 1.8s 54f ( 0%) 0fps Trem: 1min 3mb A-V:0.073 [0:43]
Skipping frame!
Pos: 1.9s 59f ( 0%) 0fps Trem: 1min 3mb A-V:0.067 [0:52]
Skipping frame!
Pos: 2.6s 76f ( 0%) 0fps Trem: 1min 3mb A-V:0.067 [0:74]
Skipping frame!
Pos: 2.6s 78f ( 0%) 0fps Trem: 1min 3mb A-V:0.063 [0:75]
demux_mpg: 3:2 TELECINE detected, enabling inverse telecine fx. FPS
changed to 23.976!
Pos: 3.8s 105f ( 1%) 86fps Trem: 1min 3mb A-V:0.086 [0:96]
Skipping frame!
Pos: 15.8s 394f ( 7%) 67fps Trem: 1min 3mb A-V:0.086 [0:134]
Skipping frame!
Pos: 16.1s 404f ( 7%) 68fps Trem: 1min 3mb A-V:0.086 [0:132]
Skipping frame!
Pos: 16.5s 414f ( 7%) 69fps Trem: 1min 3mb A-V:0.086 [0:129]
Skipping frame!
Pos: 16.9s 425f ( 7%) 71fps Trem: 1min 3mb A-V:0.085 [0:127]
Skipping frame!
Pos: 27.8s 686f (10%) 85fps Trem: 1min 3mb A-V:-0.086 [0:97]
1 duplicate frame(s)!
a52: CRC check failed! ) 66fps Trem: 0min 4mb A-V:-0.075 [0:155]
a52: error at resampling
Pos: 231.7s 5575f (100%) 66fps Trem: 0min 4mb A-V:-0.085 [0:155]
1 duplicate frame(s)!
Pos: 231.9s 5579f (100%) 66fps Trem: 0min 4mb A-V:-0.060 [0:155]
Any clues? Please cc me as I'm not on the list. Thanks!
-Josiah
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