brandonj

#!/bin/bash
#
#                                  #########
#                                  # NOTES #
#                                  #########
#
#
#
#                               ***CROPPING***
#
#  The following comes from the mencoder documentation on calculating the
#  proper crop values:
#
#  First, we want to determine the appropriate crop rectangle, so we use
#  the cropdetect filter:
#      mplayer dvd://1 -vf cropdetect
#
#  Make sure you seek to a fully filled frame (such as a bright scene,
#  past the opening credits and logos), and you will see in MPlayer's
#  console output:
#      crop area: X: 0..719  Y: 57..419  (-vf crop=720:362:0:58)
#
#  We then play the movie back with this filter to test its correctness:
#      mplayer dvd://1 -vf crop=720:362:0:58
#
#  And we see that it looks perfectly fine. Next, we ensure the width and
#  height are a multiple of 16. The width is fine, however the height is
#  not. Since we did not fail 7th grade math, we know that the nearest
#  multiple of 16 lower than 362 is 352.
#
#  We could just use crop=720:352:0:58, but it would be nice to take a
#  little off the top and a little off the bottom so that we retain the
#  center. We have shrunk the height by 10 pixels, but we do not want to
#  increase the y-offset by 5-pixels since that is an odd number and will
#  adversely affect quality. Instead, we will increase the y-offset by 4
#  pixels:
#      mplayer dvd://1 -vf crop=720:352:0:62
#
#  Another reason to shave pixels from both the top and the bottom is that
#  we ensure we have eliminated any half-black pixels if they exist. Note
#  that if your video is telecined, make sure the pullup filter (or
#  whichever inverse telecine filter you decide to use) appears in the
#  filter chain before you crop. If it is interlaced, deinterlace before
#  cropping. (If you choose to preserve the interlaced video, then make
#  sure your vertical crop offset is a multiple of 4.)
#
#
#
#                              ***SUBTITLES***
#  MPlayer prints the available subtitle IDs when run in verbose (-v) mode.
#  Example:
#      mplayer dvd://1 -v
#
#  You will find a line that says something like this:
#      subtitle ( sid ): 0 language: en
#      number of subtitles on disk: 1
#
#  Replace the "-sid 0" switch on the first pass to the subtitle ID that you
#  want (the example above shows 1 subtitle with ID 0)
#
#
#
#                               ***Audio***
#  The script is written to encode into AAC audio.  This is an advanced,
#  high quality codec, capable of storing up to 64 channels of audio.
#  This is probably sufficient for most people, and saves space.  If you
#  want to keep the original sound track and not re-encode the audio, you
#  must use the Matroska container, as the MP4 container only supports AAC.
#  To copy the original audio track, do the following:
#      CHANGE "-oac faac" TO "-oac copy" in both passes
#      REMOVE the "-faacopts ..." line in both passes
#      CHANGE "-o audio.aac" to audio.ac3 in the first pass
#      CHANGE "audio.aac" TO "audio.ac3" in the mkvmerge command
#      COMMENT out the MP4Box command
#
#
#
#                             ***OTHER NOTES***
#
# Keep in mind that this is made for movies - Other videos such as TV
# shows are usually interlaced and at a different framerate.
#
# Don't forget to change your -dvd-device
#
#
#    -Brandon

#First pass - dump audio
mencoder dvd://1 \
 -oac faac \
 -faacopts br=256 \
 -alang en \
 -ovc x264 \
 -x264encopts bitrate=1400:subq=6:partitions=all:8x8dct:me=umh:frameref=5:bframes=3:b_pyramid:weight_b:threads=auto:pass=1 \
 -vf pullup,softskip,crop=704:352:8:62,hqdn3d=2:1:2,harddup \
 -mc 0 \
 -ofps 24000/1001 \
 -vobsubout subtitles \
 -vobsuboutindex 0 \
 -sid 0 \
 -dvd-device ./ \
 -of rawaudio \
 -o audio.aac

#Second pass - dump video
mencoder dvd://1 \
 -oac faac \
 -faacopts br=256 \
 -alang en \
 -ovc x264 \
 -x264encopts bitrate=1400:subq=6:partitions=all:8x8dct:me=umh:frameref=5:bframes=3:b_pyramid:weight_b:threads=auto:pass=2 \
 -vf pullup,softskip,crop=704:352:8:62,hqdn3d=2:1:2,harddup \
 -mc 0 \
 -ofps 24000/1001 \
 -dvd-device ./ \
 -of rawvideo \
 -o video.264

# This will add audio and video files to an MP4
# "apt-get install gpac" will install MP4Box
MP4Box Muxed.mp4 \
 -add video.264 \
 -add audio.aac \
 -add subtitles.sub \
 -fps 23.976

# This will mux the audio and video files to a
# Matroska container
# "apt-get install mkvtoolnix" will install this.
mkvmerge -o Muxed.mkv \
 video.264 \
 audio.aac \
 subtitles.idx


# Delete all the files - you prolly want to keep this
# commented out and delete these manually.
# rm video.264
# rm audio.aac
# rm divx2pass.log
# rm subtitles.sub
# rm subtitles.idx