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Wed Apr 14 10:50:55 EDT 2010

One image + wave

Tools in previous post don't seem to do what I want, so let's hack it.
Goal: given a .jpeg and a .wav file, create a DVD with a track that
plays the audio, displaying the picture.


1. Prepare the image file such that its aspect ratio is 4:3.

   The `transcode' script below performs scaling to the correct
   resolution that incorporates standard DVD aspect rates (non-square
   pixels).

2. Get the time of the wave file using mplayer:

   mplayer ../hatc/clock_finished.wav

   A:   0.9 (00.8) of 179.0 (02:59.0)  1.0%

   Here it's 179 seconds.

   Or use `wavinfo' (apt-get install wavbreaker)

3. Create a list of links to a single jpeg file:

   for i in `seq -w 0 178`; do ln -s ../hatc/img_0156.jpg img$i.jpg; done

4. Use mencoder to bundle the images and the wave file into a single
   MJPEG avi with raw wave.

   mencoder -ovc copy -oac copy -mf fps=1:type=jpg 'mf://img*.jpg' \
            -audiofile ../hatc/clock_finished.wav -o bundled.avi

5. Transcode that avi using mencoder (see the recode[1] script).  Note
   that the intermediate file has an fps=1, which will be changed in
   the transcoded step, using the "harddup" option.

   recode dvd_ntsc bundled.avi out.vob

6. Use dvdauthor to convert the .avi to an image.  See the vobs2iso[2]
   script.

   vobs2iso out.iso 1.vob 2.vob

7. Use the `burn.dvd' script[3]

   burn.dvd video out.iso


Some remarks.  Tracks without audio don't seem to be such a good idea.
To create a silent wav:

dd if=/dev/zero bs=44100 count=`echo "4 $SECONDS * p" | dc` | lame -r -s 44.1 $IDS - -


[1] http://zwizwa.be/darcs/pool/bin/recode
[2] http://zwizwa.be/darcs/pool/bin/vobs2iso
[3] http://zwizwa.be/darcs/pool/bin/burn.dvd




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