[MEncoder-users] A/V synchronization problem using mencoder

[Xie Bo]

> 
> Try adding to the mencoder command '-mc 0 -noskip'.
> Might help.
> 
I tried and the following is log:
----------------
mencoder -mc 0 -noskip dvd:// -of mpeg -o output.mpg -oac copy -ovc
copy -mpegopts format=dvd
MEncoder dev-CVS-050329-09:49-3.2.3 (C) 2000-2005 MPlayer Team
CPU: Intel Pentium 4/Xeon/Celeron Foster (Family: 8, Stepping: 9)
Detected cache-line size is 64 bytes
CPUflags: Type: 8 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 0 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2

File not found: 'frameno.avi'
Failed to open frameno.avi
Reading disc structure, please wait...
There are 5 titles on this DVD.
There are 39 chapters in this DVD title.
There are 1 angles in this DVD title.
DVD successfully opened.
success: format: 0  data: 0xD7D000 - 0x73dd4800

Too many audio packets in the buffer: (4096 in 8257536 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.
MPEG-PS file format detected.
VIDEO:  MPEG2  720x480  (aspect 3)  29.970 fps  7500.0 kbps (937.5 kbyte/s)
[V] filefmt:2  fourcc:0x10000002  size:720x480  fps:29.97  ftime:=0.0334
==========================================================================
Opening audio decoder: [liba52] AC3 decoding with liba52
No accelerated IMDCT transform found
AC3: 5.1 (3f+2r+lfe)  48000 Hz  384.0 kbit/s
Using MMX optimized resampler
AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
Selected audio codec: [a52] afm:liba52 (AC3-liba52)
==========================================================================
PACKET SIZE: 2048 bytes
videocodec: framecopy (720x480 24bpp fourcc=10000002)
audiocodec: framecopy (format=2000 chans=2 rate=48000 bits=16 bps=48000 sample-1
)
Writing AVI header...
Limiting audio preload to 0.4s
Increasing audio density to 4
AUDIO FRAME SIZE: 1536, DELTA_PTS: 2949120 (-35982206469911781000000000000000000
000000000000000000000000000000000000000000000000000000000.000)
Pos:   0.4s     12f ( 0%)   0fps Trem:   0min   0mb  A-V:0.000 [0:0]
demux_mpg: 24000/1001fps progressive NTSC content detected, switching framerate.

INITIAL DELAY of 2 frames
Pos: 690.3s  20689f (37%)  69fps Trem:   8min 1410mb  A-V:0.000 [7235:384]
Too many audio packets in the buffer: (4096 in 8257536 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.

Too many audio packets in the buffer: (4096 in 8257536 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.

Too many audio packets in the buffer: (4096 in 8257536 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.

Too many audio packets in the buffer: (4096 in 8257536 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.

Too many audio packets in the buffer: (4096 in 8257536 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.

Too many audio packets in the buffer: (4096 in 8257536 bytes).
Maybe you are playing a non-interleaved stream/file or the codec failed?
For AVI files, try to force non-interleaved mode with the -ni option.

Writing AVI index...

Overhead: 1.686% (9181844 / 544570732)
Fixing AVI header...

Video stream: 7235.681 kbit/s  (904460 bps)  size: 624370176 bytes  690.324 secs
  20689 frames

Audio stream:  384.000 kbit/s  (48000 bps)  size: 33156000 bytes  690.750 secs
-----------------
I also tried -ni option,but the result is the same. I mean my DVD has more than 7000 seconds, but mencoder can only transcoder 690 seconds and pop up "Too many audio packets in the buffer" error.

Best Regards,
Xie Bo