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By Jochen Voss, on
Just for reference, here is a recipe about how to watch your DVDs on an Apple iPad. I have read that some of the required steps may be illegal to perform when you are in the USA (or an American citizen?); don't follow these instructions if you are not allowed to!
The instructions provided here use MPlayer/MEncoder on Ubuntu Linux to convert the DVD content into a file of the required format, but many other options are available.
lsdvd) to find out which track of the DVD contains the actual movie. Normally this will be the longest track,
lsdvdhelpfully lists the index of this track at the bottom of its output.
mplayer) to verify that this is indeed the track you want:
TRACKNO=1 mplayer dvd://$TRACKNO
You have to replace the value of
TRACKNO with the track
number found in the previous step.
mplayerto determine any cropping reqired:
mplayer dvd://$TRACKNO -vf cropdetect
This should print an option of the form
-vf crop=720:430:0:48 to the console.
The call to
mencoder requires about a million arguments.
The following is inspired by a post at
Mike McCandless' blog.
CROP=720:430:0:48 X264OPTS=crf=28:vbv_maxrate=1500:nocabac:global_header\ :frameref=3:threads=auto:bframes=0:subq=6:mixed-refs=0\ :weightb=0:8x8dct=1:me=umh:partitions=all:qp_step=4\ :qcomp=0.7:trellis=1:direct_pred=auto FAACOPTS=br=160:mpeg=4:object=2:raw mencoder dvd://$TRACKNO \ -of lavf -lavfopts format=mp4 \ -vf crop=$CROP,pp=lb \ -ovc x264 -x264encopts $X264OPTS \ -oac faac -faacopts $FAACOPTS -channels 2 -srate 48000 \ -o out.mp4
You should replace the value of
CROP with the value found
in the previous step. This command can take a considerable amount of time
to complete (comparable to the playing time of the DVD track), and should
produce a big file
out.mp4 (about 225MB per hour of playing
This is an excerpt from Jochen's blog.
Newer entry: playing with Google+
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