[MEncoder-users] A simpleton's DVD ripping troubles & confusion over mplayer/mencoder's seemingly *complimentary* options

[Nitin Jain]

Hi all,
I'm trying to rip out the audio of a certain title (all the chapters,
in that title) in a DVD but mencoder never seems to work

On giving:
>mencoder.exe dvd://10 -oac copy -o LaP.wav -ovc copy -o junk.vid
or
>mencoder.exe dvd://10 -chapter 2 -oac copy -o LaP.wav -ovc copy -o junk.vid

this is what's obtained (-oac copy is as unsuccesful as mp3lame, of course):

MEncoder 1.0pre7-3.4.2 (C) 2000-2005 MPlayer Team
CPU: Intel  (Family: 8, Stepping: 1)
Detected cache-line size is 64 bytes
CPUflags: Type: 8 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 0 SSE2: 0
Compiled with runtime CPU detection - WARNING - this is not optimal!
To get best performance, recompile MPlayer with --disable-runtime-cpudetection.
AVI file format detected.
VIDEO:  [FrNo]  720x480  24bpp  29.970 fps    1.0 kbps ( 0.1 kbyte/s)
Using pass3 control file: frameno.avi
Reading disc structure, please wait...
There are 18 titles on this DVD.
There are 8 chapters in this DVD title.
There are 1 angles in this DVD title.
DVD successfully opened.
success: format: 0  data: 0x833E800 - 0x93834000
MPEG-PS file format detected.
VIDEO:  MPEG2  720x480  (aspect 2)  29.970 fps  5000.0 kbps (625.0 kbyte/s)
[V] filefmt:2  fourcc:0x10000002  size:720x480  fps:29.97  ftime:=0.0334
videocodec: framecopy (720x480 24bpp fourcc=10000002)
audiocodec: framecopy (format=55 chans=2 rate=48000 bits=0 bps=15619 sample-0)
Writing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp h
eader.
ODML: Aspect information not (yet?) available or unspecified, not writing vprp h
eader.
Pos:   0.0s      1f ( 0%)   0fps Trem:   0min   0mb  A-V:0.000 [0:0]
Writing AVI index...
Fixing AVI header...
ODML: Aspect information not (yet?) available or unspecified, not writing vprp h
eader.

Video stream: 10547.521 kbit/s  (1318440 bps)  size: 43992 bytes  0.033 secs  1
frames

Audio stream:  124.952 kbit/s  (15619 bps)  size: 7872 bytes  0.504 secs


............
So, I next thought of using mplayer to simply dump the audio

>mplayer dvd://10 -dumpaudio -dumpfile LaP.wav

This dumps the chapter 1 of the title (number 10) properly, but with
the onset of chapter 2, the dumping becomes ultraslow and the audio
(after 900 secs that corresponds to chapter 1) is anyways distorted.

Finally, I even thought of dumping chapterwise, but first of all,
mplayer seems to just offer the -ss or -sb switches, but nothing that
could be some kind of an "equivalent" to -endpos (as it is in
mencoder, though as such now, mencoder lacks something like the -ss
and -sb options... and hence the confusion over this complimentarity)

>mplayer dvd://10 -chapter 2 -dumpaudio -dumpfile LaP.wav
yields either a distortion filled or an unplayable audio file anyways

Uhmm... so:
Could it be a problem with my DVD?
or
Is it related to the version of mplayer/mencoder that I've or their
usage being on a windoze platform (which unfortunately is,
unavoidable)
or
Are the options that I'm giving rather haywire and foolish?

Thanks aprior for your resolution!
Nitin