video2qt

#!/bin/bash
#
# This will convert a file to a format readable by Quicktime
#
# Based on the mencoder manual:
#   http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-quicktime-7.html

appname="$(basename "$0")"
orig_video="$1"
final_video="$orig_video.mp4"

if [ "z$orig_video" = "z" ] ; then
    echo "Usage: ${appname} video_file"
    exit 1
fi

if [ ! -r "$orig_video" ] ; then
    echo "File '$orig_video' is unreadable."
    exit 2
fi

# First pass
mencoder "$orig_video" -o /dev/null -ovc x264 -x264encopts pass=1:threads=auto:bitrate=900:bframes=1:me=umh:partitions=all:trellis=1:qp_step=4:qcomp=0.7:direct_pred=auto:keyint=300 -vf scale=-10:-1,harddup -oac faac -faacopts br=192:mpeg=4:object=2 -channels 2 -srate 48000 || exit 3

# Second pass
temp_avi="$(mktemp -t "${appname}_temp_avi_XXXXXXXX")"
mencoder "$orig_video" -o "$temp_avi" -ovc x264 -x264encopts pass=2:threads=auto:bitrate=900:bframes=1:me=umh:partitions=all:trellis=1:qp_step=4:qcomp=0.7:direct_pred=auto:keyint=300 -vf scale=-10:-1,harddup -oac faac -faacopts br=192:mpeg=4:object=2 -channels 2 -srate 48000 || exit 4
rm -f divx2pass.log

# Dump audio and video files
temp_aac="$(mktemp -t "${appname}_temp_aac_XXXXXXXX")"
temp_h264="$(mktemp -t "${appname}_temp_h264_XXXXXXXX")"
mplayer "$temp_avi" -dumpaudio -dumpfile "$temp_aac" || exit 5
mplayer "$temp_avi" -dumpvideo -dumpfile "$temp_h264" || exit 6

# mp4creator needs specific extensions
link_aac="$orig_video.aac"
link_h264="$orig_video.h264"
ln -s "$temp_aac" "$link_aac" || exit 7
ln -s "$temp_h264" "$link_h264" || exit 7

# Make the final MP4 video
mp4creator -create="$link_aac" "$final_video" && rm "$temp_aac" && rm "$link_aac"
mp4creator -create="$link_h264" -rate=23.976 "$final_video" && rm "$temp_h264" && rm "$link_h264"
mp4creator -hint=1 "$final_video"
mp4creator -hint=2 "$final_video"
mp4creator -optimize "$final_video"

# Display the results
mp4creator -list "$final_video"