Untitled

#!/bin/bash

 

##########################

## CHECK FOR SOME TOOLS ##

##########################

 

if [ -f $(which mplayer) ]; then

    echo "We have $(which mplayer) good..."

else echo "We don't have $(which mplayer) binary in your PATH." && exit 1

fi

 

if [ -f $(which mencoder) ]; then

echo "We have $(which mencoder) good..."

else echo "We don't have $(which mencoder) binary in your PATH." && exit 1

fi

 

if [ -f $(which x264) ]; then

echo "We have $(which x264) good..."

else echo "We don't have $(which x264) binary in your PATH." && exit 1

fi

 

if [ -f $(which neroAacEnc) ]; then

echo "We have $(which neroAacEnc) good..."

else echo "We don't have $(which neroAacEnc) binary in your PATH." && exit 1

fi

 

#################################

## Setup some global variables ##

#################################

 

declare -x audiopipe="audiopipe"

declare -x videopipe="videopipe"

declare -x br="900"

declare -x fps="23.976"

declare -x basedir="$(pwd)"

declare -x res="720x480"

declare -x message0="USAGE: $0 <Bitrate> <resolution> <final mp4 name> <video to encode>..."

declare -x message1="The defaults are:<$br> <$fps> <$finalmp4> <$thevideo>"

declare -x message2="Arguments cannot be skipped.  Type no args for all defaults, or all args"

declare -x vidstream="x264_tmp.mp4"

declare -x m4astream="audiostream.m4a"

declare -x finalmp4="finalmp4.mp4"

declare -x thevideo="title.vob"

 

################################

## Setup some DEFAULT Values  ##

################################

 

BR=${1:-"$br"}

RES=${2:-"$res"}

FINALMP4=${3:-"$finalmp4"}

THEVIDEO=${4:-"$thevideo"}

 

################################

## Check the number of ARGS   ##

################################

 

if [ $# -ne 4 ]; then

    echo "$message0" && echo && echo "$message1" && echo "$message2"

fi

 

cd "$basedir"

 

# Make the pipes

mkfifo "$audiopipe" 2> /dev/null

mkfifo "$videopipe" 2> /dev/null

 

#Encode the audio to HC/AAC

if [ -f "$m4astream" ]; then

rm "$m4astream"

fi

rm *.bz2 2> /dev/null

neroAacEnc -ignorelength -br 48000 -he -if "$audiopipe" -of "$m4astream" 2> neroAacEnc.log & mplayer -nocorrect-pts -vo null -vc null -ao pcm:file="$audiopipe":fast "$THEVIDEO" 2> audiorip.err > audiorip.log

rm "$audiopipe"

# Join the stderr files and stdout files then compress with bzip2

cat neroAacEnc.log audiorip.err audiorip.log | bzip2 -9c > audiostream.log.bz2

rm neroAacEnc.log audiorip.err audiorip.log

 

#Encode the video

if [ -f "$vidstream" ]; then

rm "$vidstream"

fi

# Start Pass 1

x264 --pass 1 --threads 3 --bitrate "$BR" --fps "$fps" --ref 3 --bframes 3 --direct auto --analyse all --8x8dct --subme 7 --me umh --trellis 1 --mixed-refs -q 30 --crf 20 --output "$vidstream" "$videopipe" "$RES" &> myx264_pass1.log & mencoder -vf format=i420 -nosound -ovc raw -of rawvideo -ofps "$fps" -o "$videopipe" "$THEVIDEO" 2> mencoder_raw.err > mencoder_raw.log

 

x264 --pass 2 --threads 3 --bitrate "$BR" --fps "$fps" --ref 3 --bframes 3 --direct auto --analyse all --8x8dct --subme 7 --me umh --trellis 1 --mixed-refs --output "$vidstream" "$videopipe" "$RES" &> myx264_pass2.log & mencoder -vf format=i420 -nosound -ovc raw -of rawvideo -ofps "$fps" -o "$videopipe" "$THEVIDEO" 2> mencoder_raw-pass2.err > mencoder_raw-pass2.log

 

# Archive log files for future analysis...

cat *.log x264_2pass* *.err | bzip2 -9c > videostream.log.bz2

rm *.log x264_2pass* *.err 2> /dev/null

 

# Build MP4 container

MP4Box -add "$vidstream"#video "$FINALMP4" &> container_vid.log

MP4Box -add "$m4astream"#audio "$FINALMP4" &> container_audio.log

cat container* | bzip -9c > MP4Box.log.bz2

rm container*

rm "$videopipe"

if [ -f mkx264_sh.scriptoutput ]; then

cat mkx264_sh.scriptoutput | bzip2 -9c > mkx264_sh.scriptoutput.bz2 && rm mkx264_sh.scriptoutput

fi