Comment créer un DVD en boucle ?

Une solution a été trouvée.

Il semble que le fichier source mpg n'ait pas été converti en un fichier VOB entièrement conforme. J'ai résolu ce problème avec le script suivant qui re-muxe le fichier source avant de construire le DVD :

#!/bin/bash

# Burn an MPEG file to a DVD as a looping demo
# Author: SpliFF (www.warriorhut.org)
# License: Public Domain

# Usage: mpeg2dvdloop input_file [project_name]

# Path to input mpeg file
INPUT="$1"

# Name of DVD project (default taken from input filename)
INPUT_FILENAME="${1##*/}"
NAME="${2:-"${INPUT_FILENAME%.[^.]*}"}"

# DVD burner device (might be /dev/sr0, /dev/dvd or /dev/cdrom, etc)
DVD_DEVICE="/dev/sr0"

# Working directory (make sure it has plenty of space)
# You'll defineatly want to change this if /tmp is a tmpfs ramdisk
WD='/tmp'

echo "Creating DVD project \"$NAME\" in \"$WD\" ..."

echo -e "\nWriting dvdauthor config file to \"$WD/$NAME.xml\" ...\n"

cat > "$WD/$NAME.xml" <<_EOF_
<dvdauthor>
    <vmgm />
    <titleset>
        <titles>
            <pgc>
                <vob file="$NAME-remux.mpg" />
                <post>
                    jump title 1;
                </post>
            </pgc>
        </titles>
    </titleset>
</dvdauthor>
_EOF_

echo -e "\nExtracting audio and video to elementary streams using transcode tools ...\n"
# Gentoo package: media-video/transcode
tcextract -i "$INPUT" -d 10 -t vob -x mpeg2 > "$WD/$NAME.m2v"
tcextract -i "$INPUT" -d 10 -a 0 -x ac3 -t vob > "$WD/$NAME.ac3"

echo -e "\nMerging streams into compatible file using mjpeg tools ...\n"
# Gentoo package: media-video/mjpegtools
mplex -f 8 -o "$WD/$NAME-remux.mpg" "$WD/$NAME.m2v" "$WD/$NAME.ac3"

echo -e "\nCreating DVD structure using dvdauthor ...\n"
# Gentoo package: media-video/dvdauthor
rm -rf "$WD/$NAME-DVD" && dvdauthor -o "$WD/$NAME-DVD" -x "$WD/$NAME.xml"

echo -e "\nBurning to DVD-R using growisofs ...\n"
# Gentoo package: app-cdr/dvd+rw-tools
growisofs -v -Z "$DVD_DEVICE" -dvd-video -V "$NAME" "$WD/$NAME-DVD"