DVD ripping

dvd_rip.sh

# see also https://wiki.ubuntuusers.de/DVDs_manuell_rippen/#Komplette-Spur-rippen
lsdvd /dev/sr0  # to show available tracks and their length
mplayer dvd://n -dvd-device /dev/sr0  # to preview a track -- where n is the track number (1-based)
mplayer dvd://n -dvd-device /dev/sr0 -v -dumpstream -dumpfile filename.vob  # to rip track

Note, don't use mpv (dvd://i --stream-dump=filename.vob).¹ It produces corrupt output.² Use mplayer instead, as shown above.

In particular, with mpv, length info appears to be incorrect, and track recognition seems imprecise (e.g. it may concatenate parts of the menu track, which mplayer doesn't). Moreover, I had a case of A/V track length mismatch, which caused navigation issues in VLC.

On the other hand, mplayer is older and its hardware management seems worse. It caused my DVD drive to rumble loudly and emit a distinct smell during the procedure, whereas mpv behaved more smoothly in this regard.

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FWIW, the incorrect length issue can be worked around by passing the output through ffmpeg (as seen in vobfix): ffmpeg -i "filename.vob" -c copy -f vob "filename_fixed.vob". ffmpeg also reported issues with the input.

Footnotes

1. mpv uses track indices (0-based), whereas mplayer uses track numbers (1-based) ↩

2. the output does have the stream data and is somewhat playable – but it is technically not quite right ↩

For the record, here are the warnings reported by ffmpeg:

[mpeg @ 0x564c23c84000] stream 0 : no PTS found at end of file, duration not set

[vob @ 0x564c23c9c240] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly

[vob @ 0x564c23c9c240] Non-monotonous DTS in output stream 0:0; previous: 101815200, current: 101810160; changing to 101815201. This may result in incorrect timestamps in the output file

[vob @ 0x564c23c9c240] Non-monotonous DTS in output stream 0:0; previous: 101815201, current: 101813760; changing to 101815202. This may result in incorrect timestamps in the output file.

There are also a lot of buffer underflows reported, e.g. [vob @ 0x564c23c9c240] buffer underflow st=0 bufi=177419 size=187323

Also interesting: https://wiki.videolan.org/VLC_HowTo/Rip_a_DVD/ (will investigate)

There's also vobcopy and dvdbackup, which I haven't tried yet