Date: Tue, 15 Jun 2004 14:30:08 +0600
From: Vladimir Kurtukov <Vladimir_Kurtukov@f9.n5006.z2.fidonet.org.>
Newsgroups: ftn.ru.unix.bsd
Subject: Запись DVD-R под Unix
DS> Вообще, судя по ману, не вместо, а именно после. -dvd-compat -
DS> это ключ самого growisofs, а -dvd-video он передаёт mkisofs.
-dvd-video growisofs и сам понимает, включая автоматом -dvd-compat.
в man-е это не описано, описано в faq
DS> Осталось решить последнюю проблему - двуслойки->однослойки...
1. dvdunauthor-ом делаем с dvd проект. он его делает не совсем
правильно и надо либо выкинуть vmgm и menus секции, либо как-то
дописать недостающее. для компьютерных dvd можно выкинуть.
# (optional step, if .m2v is too big)
# (just set $q at the right value)
# mv ${proj}.m2v ${proj}-big.m2v
# cat ${proj}-big.m2v | requant ${q} > ${proj}.m2v
# (requant is part of M2VRequantizer)
1. Independent of transcode version, the chapters in the final DVD are
not exactly at the same timings as in the original DVD.
The first 4...7 chapters usually are, but then it's like chapter marks
on the backup DVD are set too early, often catching the endings of the
previous chapters (as they were on the original). It's like the drift
increases towards the end of the backup, up to two seconds or so.
2. This seems to occur with the current CVS version, it did not seem to
occur with latest stable transcode (but i could be wrong).
There's a fixed, large A/V de-sync in the resulting VOB after the mplex
step, which is carried over to the backup DVD. The sound comes too
early, about 0.6 - 1.2 seconds. To fix it, i need to copy the first
15...30 frames of the original AC3 file, and paste them again in front
of the AC3 file, essentially repeating the initial 0.6 - 1.2 seconds to
push the sound back and fix the de-sync.
It does not happen, though, with all DVDs, and i'm not even sure if it's
the current CVS which has the issue, or just the DVDs that i backed up
recently. I cannot try with latest stable transcode again, don't have
time for that, i apologize.
Anyway, even with latest stable transcode, i noticed such a drift if i
don't dump A and V directly from DVD, but instead dump the title with
dvd::rip and then extract the A and V.
If you think i'm mistaken, then i probably am. :-) I just want to let
you know, in case something rings a bell somewhere.
dvdauthor -t -a ac3+en -c .at chap.list -o dvd movie.mpeg &&
dvdauthor -T -o dvd &&
mkisofs -dvd-video -udf -o dvd.iso dvd &&
echo "Done."
###End script###
Okay, this looks like exactly what I need :) One question, do you
multiply the audio file size by 2 because you are including 2 audio
streams? For example, with one video and one audio stream, I would do
the following:
Vova
