Convert video for meizu m6 player

meizu_video_convert.sh

#!/bin/bash
#
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#       Copyleft 2007, 2008 wishmechaos
#
#        Version 0.1, 21-oct-07
#        Version 0.2, 22-oct-07, Added ratio autodetect (requires ffmpeg),
#            small subtitle fix.
#             routine from http://tuxicity.wordpress.com/2006/12/01/avi-to-dvd-with-ffmpeg-and-dvdauthor/
#        Version 0.2.1, 12-feb-08, Fixed small bug when filename has spaces.
#        Version 0.3, 1-mar-08, Tuned mencoder parameters.
#        Version 0.4, 20-mar-08, fixed double pass and subtitles loading
#        version 0.5, 17-oct-08, detect ratio using file rather than ffmpeg, 
#           dropping requirement for ffmpeg

# For debugging purposes
# set -x

### Defaults
# Frames per second (15-20)
fps=20

# Two pass encoding, takes longer, better quality
# yes / no
twopass=no

# Crop settings.
# "auto" will try to detect if the source video is 4:3 or 16:9
#  and leave that intact.
# "yes" will leave 4:3 videos as they are, and will crop 16:9
#  videos in order to take up all of the screen.
crop="auto"

# Video bitrate
vbitrate=350
# Audio bitrate
abitrate=112
# Sample rate
srate=44100
# Maximum Bitrate allowed
vrc_maxrate=460
# Buffer size
vrc_buf_size=1835
# Brightness
bright=""
### End defaults

# Some common options
common="-idx -noodml -force-avi-aspect 1.3333 -msglevel mencoder=1 -ofps $fps -ovc lavc -ffourcc XVID"

show_help() {
      echo "Usage: `basename "$0"` [-h(elp)] [-c(rop) auto yes] [-p (two-pass)] [-f(ps) number]
            [-v(ideo bitrate) number] [-a(udio bitrate) number] file1.avi [file2.avi...]
            Subtitles are automatically loaded if their filename is the same as the movie file"
      exit 1
}

# find subtitles with same filename
findsubs() {
      for possiblefile in "$filename"*; do
        case $possiblefile in
          *.sub) subfile="$possiblefile";;
          *.srt) subfile="$possiblefile";;
        esac
     done
     if test -n "$subfile"; then #if [[ "$subfile" != "" ]]; then
       echo "Found $subfile."
       subs=(-utf8 -noautoexpand -subpos 95 -subfont-autoscale 3 -subfont-outline 1 -subcp enca -sub "$subfile")
     fi
}

aspectdetect() {
      aspect=$(( $(file "$moviefile" | sed "s/.* \([1-9][0-9]*\) x \([0-9]*\).*/\10000 \/ \2/") ))
          
      if [[ $aspect -lt 15555 ]]; then
        # 4:3
        echo "$moviefile appears to be 4:3"
        vf="scale=-2:240,crop=320:240,expand=320:240:::1"
      else
        # 16:9
        echo "$moviefile appears to be Widescreen"
        vf="scale=320:-2,crop=320:240,expand=320:240:::1"
      fi
}

# Convert function
convert() {
      case $crop in
        auto) aspectdetect;;
        yes) vf="scale=-2:240,crop=320:240,expand=320:240:::1"
      esac
                              
      if [[ "$twopass" == "no" ]]; then
        mencoder "${subs[@]}" -vf ${bright}softskip,$vf,rotate=1 "$moviefile" $common -lavcopts threads=8:vcodec=mpeg4:mbd=2:trell:vbitrate=$vbitrate:vrc_maxrate=$vrc_maxrate:vrc_buf_size=$vrc_buf_size:vmax_b_frames=0:vhq:acodec=libmp3lame:abitrate=$abitrate:keyint=100:sc_factor=5 -sws 9 -srate $srate -oac lavc -af volnorm,delay=230:230 -o "$filename.meizu.avi"
      else
        #pass 1
        mencoder -nosound -vf ${bright}softskip,$vf,rotate=1 "$moviefile" $common -lavcopts threads=8:vcodec=mpeg4:vpass=1:vbitrate=$vbitrate:vrc_maxrate=$vrc_maxrate:vrc_buf_size=$vrc_buf_size:vmax_b_frames=0:vhq:turbo -sws 9 -o "$filename.meizu.avi"
        #pass 2
        mencoder "${subs[@]}" -vf ${bright}softskip,$vf,rotate=1 "$moviefile" $common -lavcopts threads=8:vcodec=mpeg4:mbd=2:trell:vpass=2:vbitrate=$vbitrate:vrc_maxrate=$vrc_maxrate:vrc_buf_size=$vrc_buf_size:vmax_b_frames=0:vhq:acodec=libmp3lame:abitrate=$abitrate:keyint=100:sc_factor=5 -sws 9 -srate $srate -oac lavc -af volnorm,delay=230:230 -o "$filename.meizu.avi"
          rm divx2pass.log
      fi
  
      echo " Finished converting $moviefile"
}

cleanUp() {
    rm "$filename.meizu.avi"
    rm divx2pass.log
    exit 1
}
trap cleanUp INT

# If there're no arguments
if [ $# = 0 ]; then show_help; fi

# Parse arguments
x=1         # Avoids an error if we get no options at all.
while getopts "hc:pf:b" opt; do
      case "$opt" in
        h|\?) show_help;;
        c) crop="$OPTARG";;
        p) twopass="yes";;
        f) fps="$OPTARG";;
        a) abitrate="$OPTARG";;
        v) vbitrate="$OPTARG";;
        # eq2=gamma:contrast:brightness:saturation
        # gamma 0.1 - 10 (1.0), contrast -2 − 2 (1.0), brightnes -1 - 1 (0.0), saturation 0 − 3 (1.0)
        b) bright="eq2=1.0:1.2:0.2:1.0,";;
      esac
      x=$OPTIND
done
shift $((x-1))

for moviefile in "$@"; do
  if [[ -f "$moviefile" ]]; then
    echo "Moviefile is $moviefile"
    extension=".${moviefile##*.}"
    echo "Extension is $extension"
    filename="`basename "$moviefile" "$extension"`"
    echo "Filename is therefore "$filename""
    # ugly way to do it, works though.
    if [[ "$moviefile" != "${moviefile%/*}" ]]; then cd "${moviefile%/*}"; fi
      findsubs
      echo "Converting $moviefile"
      convert
    else
      echo ""$moviefile" doesn't exist."
    fi
done