[mythtv-users] DVD Ripping with MythDVD - couple of questions
(AC3, subtitles & CD-automount)
Andrew Dodd
atd7 at cornell.edu
Thu Jan 15 22:39:05 EST 2004
Quoting Tim Harvey <tharvey at alumni.calpoly.edu>:
> Could anyone explain what happens to the AC3 audio and subtitles when
> MythDVD rips a 'perfect' quality dvd? Its my understanding that with
> this setting it just decrypts the VOB and otherwise doesn't touch those
> things. This would mean that you have a perfect copy of all AC3 audio
> tracks correct? If that is the case, would it be an appropriate change
> to MythDVD to disable these if 'Perfect' quality is selected?
Worst case, a script like this set up as a transcoder would work: (Well, maybe.
I'm not very familiar with Myth's transcoding functionality.)
It requires dvdauthor (provides mpeg2desc) and mjpegtools (provides mplex).
-------------
#!/bin/sh
mkfifo aud0
mkfifo vid0
mpeg2desc -a0 < $1 > aud0 &
mpeg2desc -v0 < $1 > vid0 &
mplex -f 8 -V -o $2 aud0 vid0
rm aud0
rm vid0
------------
That will extract the first audio and video streams from the first file named as
an argument to the script, and remultiplex only those two streams to a new MPEG
file listed as the second argument to the script.
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