Title: wizard_people_dvd_create_notes.txt
Subject: Notes to create a Wizard People DVD audio+video for easier enjoyment.

# Followed http://apocalyptech.com/linux/wpdr/
# on how to merge the wizard people dear reader audo with video.
# Trying to do it manually is really hard.

# Requires a dual layer dvd, to include both audio tracks

# install some stuff
emerge normalize    # for normalize
emerge transcode    # for transcode
emerge mjpegtools   # for mplex
emerge mplayer      # for mplayer
emerge lame         # for lame
app-cdr/cdrtools    #
emerge dvd+rw-tools # for growfs
# Make working temporary directory
mkdir wizard_people_temp
cd wizard_people_temp

# Get the stuff
wget http://www.archive.org/download/wizard-people/wiz1.mp3
wget http://www.archive.org/download/wizard-people/wiz2.mp3
wget http://apocalyptech.com/linux/wpdr/wizard_people.tbz2

#------------------------
# Audio conversion
#------------------------

# Convert the mp3s to wavs
lame --decode wiz1.mp3 wiz1.wav
lame --decode wiz2.mp3 wiz2.wav

# Increase volume on the first by 2.5dB
normalize -g 2.5 wiz1.wav

# Combine the two files
# Pad end of wiz1.wav to a length of 01:13:48.890.
# concatinate wave files, 
# pad length to 02:32:21.376.
#---------------
# Pad first
sox wiz1.wav wiz1_pad.wav pad 0 3.615
# Join
sox wiz1_pad.wav wiz2.wav wiz_join.wav
# Pad Joined
sox wiz_join.wav wiz.wav pad 0 417.405
# remove temp files
rm -rf wiz1.mp3 wiz2.mp3 wiz2.wav wiz1.wav wiz1_pad.wav wiz_join.wav
# we have the joined:
ls -laF wiz.wav
#
#  -rw-r--r-- 1 jstile jstile 806269488 Nov 28 10:17 wiz.wav
#

# Resample to 48 kHz
sox wiz.wav -r 48000 wiz48k.wav polyphase

# Convert wiz48k.wav to AC3 Audio
# disregard:  sox WARN sox: effect `polyphase' is deprecated; see sox(1) for an alternative
transcode -i wiz48k.wav -y null,raw -N 0x2000 -E 48000,16,2 -b 384 -m sound-wpdr.ac3

# Convert wiz48k.wav to AC3 Audio
transcode -i wiz48k.wav -y null,raw -N 0x2000 -E 48000,16,2 -b 384 -m sound-wpdr.ac3

# Get some space back
rm -rf wiz.wav wiz48k.wav

# Load the dvd

# Rip the video and audio streams from the DVD (128 is english track)
mplayer dvd://1 -dumpvideo -dumpfile video.m2v
mplayer dvd://1 -dumpaudio -dumpfile sound-orig.ac3 -aid 128

# Check the files:
file *.ac3 *.m2v
#
#  sound-orig.ac3: ATSC A/52 aka AC-3 aka Dolby Digital stream, 48 kHz,, complete main (CM) 3 front/2 rear, LFE on,, 448 kbit/s reserved Dolby Surround mode
#  sound-wpdr.ac3: ATSC A/52 aka AC-3 aka Dolby Digital stream, 48 kHz,, complete main (CM) 2 front/0 rear, LFE on,, 384 kbit/s reserved Dolby Surround mode
#  video.m2v:	  MPEG sequence, v2, MP@ML interlaced Y'CbCr 4:2:0 video, CCIR/ITU NTSC 525, 4:3, 29.97 fps
#
du -sh *.ac3 *.m2v
#
#  489M    sound-orig.ac3
#  419M    sound-wpdr.ac3
#  5.8G    video.m2v
#

# Multiplex the video and sound streams
mplex -f8 -o wizard_people.vob video.m2v sound-wpdr.ac3 sound-orig.ac3
du -sh wizard_people.vob
#
#  6.8G    wizard_people.vob
#

# Unpack, move vob into directory, and remove unused files.
tar -xjvpf wizard_people.tbz2
mv  wizard_people.vob wizard_people/
rm -rf sound-orig.ac3 sound-wpdr.ac3 video.m2v
cd  wizard_people

# Create dvd image
dvdauthor -x wizard_people.xml

# Test before burn
xine dvd:///$HOME/wizard_people/wizard_people/wizard_people/VIDEO_TS

# Burn the image
growisofs -dvd-compat -Z /dev/dvd -dvd-video -f -V HP_WPDR wizard_people