mjpegtools 1:2.1.0+debian-3 / usr / bin / lav2mpeg

#!/bin/bash
#
# A convenient front-end for the various mpeg encoding tools.
# Allows "1 command" production of a video stream...
# 

# Licensed under GPL (see http://www.fsf.org/licenses/gpl.html or contact
# the Free Software Foundation for a copy)
# Copyright Scott Moser


# these can be changed with env variables, just set and export to override
NICEVAL=${NICEVAL:-19}

LAV2YUV=${LAV2YUV:-"lav2yuv"}
YUVSCALER=${YUVSCALER:-"yuvscaler"}
MPEG2ENC=${MPEG2ENC:-"mpeg2enc"}
LAV2WAV=${LAV2WAV:-"lav2wav"}
AUDIOENC=${AUDIOENC:-"mp2enc"}       # can be "toolame" or "mp2enc"
MPLEX=${MPLEX:-"mplex"}
YUVDENOISE=${YUVDENOISE:-"yuvdenoise"}
LAVINFO=${LAVINFO:-"lavinfo"}

NOISYLOGFILE=""                       # if not set, will be outputfilename.log -- only used if -L flag sent
QUIETLOG=${QUIETLOG:-"lav2mpeg.log"}  # if set to not "" will log all normal messages to this file as well as stdout
LOGDATE=${LOGDATE:-1}                 # whether or not to output the date in log messages
LOGDATESTR=${LOGDATESTR:-"+%H:%M:%S"} # format for the date - only used if logdate!=0
LOGCOMMANDS=${LOGCOMMANDS:-0};        # if non-zero, will output the commands it runs.  commands are always logged to NOISYLOGFILE if used
LOGONLY=${LOGONLY:-""}                # will only log the commands it would use if set  (for example useage/testing)
LAV2MPEGRC=${LAV2MPEGRC:-"$HOME/.lav2mpegrc"}   # set this to contain your lav2mpeg rc file -- in bash sourceable syntax.
                                      # it can modify any ENV vars in this script
                                      # or set a "LAV2MPEG_OPTIONS" ENV to prepend default options that will be overridden by explicit command line options.
if [ "$LOGONLY" != "" ]; then
   LOGCOMMANDS=1
fi
VCD_MEDIUM_BR=${VCD_MEDIUM_BR:-1550}
VCD_HIGH_BR=${VCD_HIGH_BR:-1800}
SVCD_HIGH_BR=${SVCD_HIGH_BR:-3000}
SVCD_HIGH_QUAL=${SVCD_HIGH_QUAL:-5}
SVCD_HIGH_BUFFSIZE=${SVCD_HIGH_BUFFSIZE:-100}

# extra flags for the encoders (will be the last thing on the line before file names)
EXTRA_LAV2YUV=${EXTRA_LAV2YUV:-""}
EXTRA_YUVSCALER=${EXTRA_YUVSCALER:-""}
EXTRA_MPEG2ENC=${EXTRA_MPEG2ENC:-""}
EXTRA_LAV2WAV=${EXTRA_LAV2WAV:-""}
EXTRA_AUDIOENC=${EXTRA_AUDIOENC:-""}
EXTRA_MPLEX=${EXTRA_MPLEX:-""}
EXTRA_YUVDENOISE=${EXTRA_YUVDENOISE:-""}

# things that can be changed with arguments
# don't let an env override, to avoid confusion
bitrate=1152
quality=12
saveraw=0
mode="vcd"
outputres=""
encode_quality=2
outfile=""
stereo=1
noisy=0
logall=0
aencbpr_stereo=224
aencbpr_mono=112
use_fifo=0

# -- shouldn't have to change below here
NICE="nice -n $NICEVAL"


# functions
logIt() {
   if [ $LOGDATE -ne 0 ]; then
      NOW=$(date $LOGDATESTR)
      NOW="$NOW - "
   fi
   if [ "$logfile" = "" ]; then
      echo "${NOW}$@"
   else
      echo "${NOW}$@" | tee -a $logfile
   fi
   if [ "$output_noisy" != ""  ]; then
      echo "${NOW}$@" >> $noisylog 
   fi
}

cleanExit() {
   # delete raw files if sawraw is 0 or exiting with non-zero
   if [ $saveraw -eq 0 -a "$1" = "0" ]; then
      rm -f $audio $video
   fi
   exit $1
}

getTimeDiff() {
   if [ $# -lt 2 ]; then
      return
   fi
   diff=$(expr $2 - $1)
   hours=$(expr $diff / 3600)
   temp=$(expr $hours \* 3600 )
   diff=$(expr $diff - $temp )
   minutes=$(expr $diff / 60)
   sec=$(expr $diff % 60)
   printf "%i:%02d:%02d\n" "$hours" "$minutes" "$sec"
}

doStep() {
   if [ "$LOGCOMMANDS" = "0" ]; then
      echo "COMMAND=${step[$count]}"
   fi
   if [ "$LOGONLY" = "" ]; then
      eval ${step[$count]}
   fi
}


usage()
{
  name=`basename $0`
  cat << END
Usage: $name [ -s/S -k/K -f/F -l/L -n/N -y/Y ] [ -m mode ] [ -e 0|1|2 ] [ -o outputFile ] [ -b vidbitrate ] [ -a audbitrate ] [ -q 0-30 ] [ -d XxY ] srcfile...
  s/S - stereo : -s=off -S=on                                    (default auto)
  k/K - keep raw output files (.m1v, .m2v, .mp2) : -k=no -K=yes  (default no)
  f/F - use fifos : -f=no -F=yes                                 (default no)
  l/L - log all encoding : -l=no -L=yes                          (default no)
  n/N - be noisy (don't hide output of tools) : -n=no -N=yes     (default no)
  y/Y - yuvdenoise : -y=don't use -Y=use           (default e=1|2 use e=0 dont)
  m - one of MODES (see below)                                   (default $mode)
  e - encoding quality : 0, 1, or 2                              (default $encode_quality)
  o - output file ( defaults to firstInputFileName.mpg )
  b - video bitrate in kbps  ( only used when -o is "mpeg1" or "mpeg2" )
  a - audio bitrate in kpbs  ( only used when -o is not "vcd*" )
  q - quality for mpeg2enc   ( only used when -o is "mpeg1" or "mpeg2" )
  d - dimensions XxY         ( only used when -o is "mpeg1" or "mpeg2" )
                               defaults to same as input

  MODES:
      vcd          -- standard VCD                    (352x240 or 352x288)
      vcd_medium   -- ${VCD_MEDIUM_BR}kbps video VCD              (352x240 or 352x288)
      vcd_high     -- ${VCD_HIGH_BR}kbps video VCD              (352x240 or 352x288)
      svcd         -- standard SVCD                   (480x480 or 480x576)
      svcd_high    -- ${SVCD_HIGH_BR}kbps(max) vbr @qual=${SVCD_HIGH_QUAL}       (480x480 or 480x576)
      mpeg1        -- honor -a -b -q -d flags default resolution same as input
      mpeg2        -- honor -a -b -q -d flags default resolution same as input

   EXAMPLE:
      VCD:  $name file.avi
              - will create a VCD compatible mpeg named file.mpg
      mpeg2: $name -m mpeg2 -o output.mpg file.edl
              - will create a mpeg2 with default bitrate in same res as input
      mpeg1: $name -a 160 -b 2110 -d 320x240 -m mpeg1 -o output.mpg file.edl
              - will create a mpeg2 with videobitrate=2110 and audio=160
              - and resolution 320x240
      debug: export LOGONLY=1; $name -m mpeg2 -o output.mpg file.edl
              - will print out the commands it would use to do this, but
              - not do anything

   please see the script for more info and environment variables set/used
END
exit 1
}

printDebugInfo() {
   logIt "going from ${video_width}x${video_height} ($video_norm) to ${output_width}x${output_height} in $mode with quality=$quality, bitrate=$bitrate and encodequal=${encode_quality}"
   logIt "outfile=$outfile audio=$audio video=$video"
   logIt "lav2yuv_flags=$lav2yuv_flags"
   logIt "yuscaler_flags=$yuvscaler_flags"
   logIt "mpeg2enc_flags=$mpeg2enc_flags"
   logIt "lav2wav_flags=$lav2wav_flags"
   logIt "audioenc_flags=$audioenc_flags"
   logIt "mplex_flags=$mplex_flags"
   logIt "need_scale=$needscale"
   logIt "downscale=$downscaling"
}

if [ $# -eq 0 -o "$1" = "--help" -o "$1" = "-h" ]; then
   usage;
   exit 1
fi

LAVRC_COUNT=0
if [ -e $LAV2MPEGRC ]; then
   logIt "Sourcing lav2mpgrc file $LAV2MPEGRC (this can change defaults!)"
   . $LAV2MPEGRC
   LAVRC_COUNT=$(echo $LAV2MPEG_OPTIONS | wc -w )
fi

infostr=""
while getopts "sSkKfFlLnNyYb:a:q:d:m:e:o:" opt  $LAV2MPEG_OPTIONS $@
do
   case $opt in
      s) userstereo=0
         infostr="${infostr} using mono -"
         ;;
      S) userstereo=1
         infostr="${infostr} using stereo -"
         ;;
      k) saveraw=0
         infostr="${infostr} not saving raw files -"
         ;;
      K) saveraw=1
         infostr="${infostr} saving raw files -"
         ;;
      f) use_fifo=0
         infostr="${infostr} not using fifos-"
         ;;
      F) use_fifo=1
         infostr="${infostr} using fifos-"
         ;;
      l) logall=0
         infostr="${infostr} not logging all -"
         ;;
      L) logall=1
         infostr="${infostr} logging all -"
         ;;
      n) noisy=0
         infostr="${infostr} not being noisy -"
         ;;
      N) noisy=1
         infostr="${infostr} being noisy -"
         ;;
      y) userdenoise=0
         infostr="${infostr} not using yuvdenoise -"
         ;;
      Y) userdenoise=1
         infostr="${infostr} using yuvdenoise -"
         ;;
      b) bitrate=$OPTARG
         infostr="${infostr} using video bitrate=$bitrate -"
         ;;
      a) useraencbpr=$OPTARG
         infostr="${infostr} using audio bitrate=$useraencbpr"
         ;;
      q) quality=$OPTARG
         infostr="${infostr} using quality=$quality -"
         ;;
      d) outputres=$OPTARG
         infostr="${infostr} using outputres=$outputres -"
         ;;
      m) mode=$OPTARG
         infostr="${infostr} mode=$mode -"
         ;;
      e) encode_quality=$OPTARG
         infostr="${infostr} encode_quality=$encode_quality -"
         ;;
      o) outfile=$OPTARG
         infostr="${infostr} outfile=$outfile -"
         ;;
      ?)
         usage
         ;;
    esac
done
let MOPTIND=OPTIND-LAVRC_COUNT
shift `expr $MOPTIND - 1`

if [ "${QUIETLOG}" != "" ]; then
   logfile=${QUIETLOG}
else
   logfile="/dev/null"
fi
#uncomment to blank logfile
#echo "" > $logfile

logIt "$infostr"

# lavinfo should set up video_frames, video_width
# video_height, video_inter, video_norm, audio_chans
eval $($LAVINFO $@ | grep "=")  # grep for = to remove Warnings
if [ "$video_frames" = "" ]; then
   logIt "'lavinfo $@' died! exiting"
   logIt " maybe you don't have lavinfo. or your input flags were wrong"
   logIt " input files must be the last input on the command line"
   exit 1
fi

case $mode in 
   vcd*)
      case $video_norm in
         NTSC)  output_width=352; output_height=240 ;;
         PAL)   output_width=352; output_height=288 ;;
         SECAM) output_width="SECAM_VCD_WIDTH???"; output_height="SECAM_VCD_HEIGHT";;
      esac
      ;;
   svcd*)
      case $video_norm in
         NTSC)  output_width=480; output_height=480 ;;
         PAL)   output_width=480; output_height=576;;
         SECAM) output_width="SECAM_SVCD_WIDTH???"; output_height="SECAM_SVCD_HEIGHT" ;;
      esac
      ;;
   mpeg*)
      if [ "$outputres" != "" ]; then
         temp=$outputres
         temp=${outputres%%[+-]*}
         output_width=${temp%x*}
         output_height=${temp#*x}
         logIt "using output_width=$output_width, output_height=$output_height"
         # these don't work yet, negative values would mess them up
         temp=${outputres#*+}
         output_xoff=${temp%%[+-]*}
         output_yoff=${temp##*[+-]}
      else
         output_width=$video_width
         output_height=$video_height
      fi
      ;;
esac


# hopefully sane input has been checked, lets start setting things up

# simple check for logonly mode
if [ "$LOGONLY" != "" -a "$LOGONLY" != "0" -a $use_fifo -eq 1 ]; then
   use_fifo=0
   logIt "can't do logonly with fifos, turning fifos off"
fi

# set up extra flags as possibly given by user
lav2yuv_flags=$EXTRA_LAV2YUV
yuvscaler_flags=$EXTRA_YUVSCALER
mpeg2enc_flags=$EXTRA_MPEG2ENC
lav2wav_flags=$EXTRA_LAV2WAV
audioenc_flags=$EXTRA_AUDIOENC
mplex_flags=$EXTRA_MPLEX
yuvdenoise_flags=$EXTRA_YUVDENOISE

# get output mpeg version and output file names
case $mode in
   vcd|vcd_medium|vcd_high|mpeg1) mpegver=1 ;;
   svcd|svcd_high|mpeg2) mpegver=2 ;;
esac

if [ "$outfile" != "" ]; then
   basename=${outfile%.*}
else
   basename=${1%.*}
   outfile=${basename}.mpg
fi
video=${basename}.m${mpegver}v
audio=${basename}.mp2

if [ "$NOISYLOGFILE" = "" ]; then
   noisylog=${basename}.log
else
   noisylog=$NOISYLOGFILE
fi

# set up the audio
if [ "$userstereo" = "" ]; then
   stereo=${audio_chans:-0}
else
   stereo=$userstereo
fi

if [ $AUDIOENC = "mp2enc" ]; then
   nostereo_flag="-m"
else
   nostereo_flag="-a"
fi

if [ "$stereo" != "0" ]; then
  aencbpr=$aencbpr_stereo
else
  aencbpr=$aencbpr_mono
  mono_flag=$nostereo_flag
fi
# set useraencbpr to aencbpr unless set
useraencbpr=${useraencbpr:-$aencbpr}

# set up  always-on flags
lav2yuv_flags="$lav2yuv_flags $@"
case $video_norm in
   PAL)    ysnorm="p";;
   SECAM)  ysnorm="s";;
   NTSC|*) ysnorm="n";;
esac
yuvscaler_flags="-n $ysnorm $yuvscaler_flags"
mpeg2enc_flags="-o $video $mpeg2enc_flags"
lav2wav_flags="$lav2wav_flags $@"
if [ $AUDIOENC = "mp2enc" ]; then
   audioenc_flags="$mono_flag -r 44100 ${audioenc_flags} -o $audio"
else
   # assume toolame
   audioenc_flags="$mono_flag -s 44.1 /dev/stdin ${audioenc_flags} $audio"
fi
mplex_flags=" -o $outfile $mplex_flags $audio $video"

# input/output dependent
if [ $video_width -eq $output_width -a $video_height -eq $output_height ]; then
   needscale=0;
else
   needscale=1
fi
downscaling=0
if [ $video_width -gt $output_width -o $video_width -eq $output_width ]; then
   if [ $video_height -gt $output_height -o $video_height -eq $output_height ];
      then
      downscaling=1
   fi
fi

if [ "$video_inter" = "1" ]; then
   yuvdenoise_flags="$yuvdenoise_flags -F"
fi

#encoder quality dependent
case ${encode_quality} in
      0) 
         mpeg2enc_flags="-4 4 -2 4 ${mpeg2enc_flags}"
         if [ $downscaling -ne 0 ]; then
            yuvscaler_flags="-M RESAMPLE ${yuvscaler_flags}"
         fi
         dodenoise=0
         if [ "$userdenoise" != "" -a "$userdenoise" != "0" ]; then
            logIt "set dodenoise to on at users request"
            dodenoise=1
         fi
         ;;
      2)
         mpeg2enc_flags="-4 1 -2 1 ${mpeg2enc_flags}"  # -N here?
         dodenoise=1
         if [ "$userdenoise" != "" -a "$userdenoise" = "0" ]; then
            dodenoise=0
         fi
         ;;
      1|*) 
         dodenoise=1
         if [ "$userdenoise" != "" -a "$userdenoise" = "0" ]; then
            dodenoise=0
         fi
         ;;
esac         

# output(mode) dependent
case ${mode} in
   vcd)
      yuvscaler_flags="-O VCD ${yuvscaler_flags}"
      mpeg2enc_flags="-a 2 -f 1 ${mpeg2enc_flags}"
      mplex_flags="-f 1 ${mplex_flags}"
      ;;
   vcd_medium)
      yuvscaler_flags="-O VCD ${yuvscaler_flags}"
      mpeg2enc_flags="-a 2 -f 2 -b ${VCD_MEDIUM_BR} ${mpeg2enc_flags}"
      mplex_flags="-f 2 ${mplex_flags}"
      ;;
   vcd_high)
      yuvscaler_flags="-O VCD ${yuvscaler_flags}"
      mpeg2enc_flags="-a 2 -f 2 -b ${VCD_HIGH_BR} ${mpeg2enc_flags}"
      mplex_flags="-f 2 ${mplex_flags}"
      ;;
   mpeg1)
      yuvscaler_flags="-O SIZE_${output_width}x${output_height} ${yuvscaler_flags}"
      mpeg2enc_flags="-f 0 -b ${bitrate} ${mpeg2enc_flags}"
      mplex_flags="-f 0 ${mplex_flags}"
      aencbpr=$useraencbpr
      ;;
   svcd)
      yuvscaler_flags="-O SVCD ${yuvscaler_flags}"
      mpeg2enc_flags="-a 2 -f 4 ${mpeg2enc_flags}"
      mplex_flags="-f 4 ${mplex_flags}"
      aencbpr=$useraencbpr
      audioenc_flags="-e $audioenc_flags"
      ;;
   svcd_high)
      yuvscaler_flags="-O SVCD ${yuvscaler_flags}"
      mpeg2enc_flags="-a 2 -f 5 -b ${SVCD_HIGH_BR} -V ${SVCD_HIGH_BUFFSIZE} -q ${SVCD_HIGH_QUAL} ${mpeg2enc_flags}"
      mplex_flags="-f 5 ${mplex_flags}"
      aencbpr=$useraencbpr
      audioenc_flags="-e $audioenc_flags"
      ;;
   mpeg2)
      yuvscaler_flags="-O SIZE_${output_width}x${output_height} ${yuvscaler_flags}"
      mpeg2enc_flags="-f 3 -b ${bitrate} -q $quality ${mpeg2enc_flags}"
      mplex_flags="-V -f 3 ${mplex_flags}"
      aencbpr=$useraencbpr
      ;;
esac

if [ $dodenoise -ne 0 ]; then
   yuvdenoise_str="| $NICE $YUVDENOISE $yuvdenoise_flags"
else
   yuvdenoise_str=""
   logIt "not using yuvdenoiser, dodenoise=$dodenoise"
fi

if [ $needscale -ne 0 ]; then
   yuvscale_str="| $NICE $YUVSCALER $yuvscaler_flags"
else
   yuvscale_str=""
fi

#final flags  -- bitrate flag is -b for both mp2enc and toolame
audioenc_flags="-b $aencbpr $audioenc_flags"


# this is kinda nasty, but it ends up giving a somewhat clean loop at the
# bottom without a whole lot of if's and such
count=1;
stepdesc[$count]="video encoding"
step[$count]="$NICE $LAV2YUV $lav2yuv_flags $yuvdenoise_str $yuvscale_str | $NICE $MPEG2ENC $mpeg2enc_flags"

count=2;
stepdesc[$count]="audio encoding"
step[$count]="$NICE $LAV2WAV $lav2wav_flags | $NICE $AUDIOENC $audioenc_flags"

count=3;
if [ $use_fifo -eq 1 ]; then
   stepdesc[$count]="encoding with fifos"
else
   stepdesc[$count]="multiplexing"
fi
step[$count]="$NICE $MPLEX $mplex_flags"

output_noisy=""
if [ $noisy -ne 0 -a $logall -ne 0 ]; then
   output_noisy="2>&1 | tee -a $noisylog"
   echo "" > $noisylog
fi
if [ $noisy -eq 0 ]; then
   if [ $logall -eq 0 ]; then
      noisylog="/dev/null"
   fi
   echo "" > $noisylog
   output_noisy=">>$noisylog 2>&1"
fi

detach=""
if [ $use_fifo -ne 0 ]; then
   detach="&";
   saveraw=0
   rm -f $video $audio
   mkfifo $video
   mkfifo $audio
fi

logIt "using mode=$mode, stereo=$stereo audio bpr=$aencbpr"
if [ $logall -ne 0 ]; then
   logIt "logging everything to $noisylog"
fi
logIt "beginning conversion of $@ to $outfile"
logIt "had $video_frames to encode"

STARTALL=$SECONDS
for stepnum in 1 2 3
do
   count=$stepnum
   START=$SECONDS
   if [ $stepnum -eq 3 -o $use_fifo -ne 1 ]; then
      logIt "beginning ${stepdesc[$count]}" 
      if [ $LOGCOMMANDS != "0" ]; then
         logIt "COMMAND=${step[$count]}"
      fi
   fi
   if [ $stepnum -eq 3 ]; then
      detach="" # don't detach the last stem (mplex)
   fi
   eval doStep $output_noisy $detach
   RET=$?
   if [ $RET -ne 0 ]; then
      logIt "ugh! ${stepdesc[$count]} failed, bailing. used command:" 
      logIt "${step[$count]}"
      cleanExit $RET
   fi
   if [ $stepnum -eq 3 -o $use_fifo -ne 1 ]; then
      diff=$(getTimeDiff $START $SECONDS)
      elapsed=$(expr $SECONDS - $START)
      if [ "$elapsed" != "0" ]; then
         fps=$(echo "scale=3; $video_frames / $elapsed " | bc)
         logIt "finished ${stepdesc[$count]} ( took $diff - $fps fps)"
      else
         logIt "finished ${stepdesc[$count]} ( took $diff )"
      fi
   fi
done

END=$SECONDS
diff=$(getTimeDiff $STARTALL $SECONDS)
temp=$(expr $SECONDS - $STARTALL)
if [ "$temp" != "0" ]; then  # avoid divide by zero possibility
   fps=$(echo "scale=3; $video_frames / $temp" | bc)
   logIt "finished encoding (took $diff - $fps fps)"
else
   logIt "finished encoding (took $diff)"
fi
cleanExit 0