Video encoding

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Pour créer ses DIVX et VCD

DIVX (en 2 passes) :

VERSION 0.6.1

 
 # Script pour faire les divx de bonne qualite generalement en 2 CD
 # note: pour le debut et la fin d'encodage , il faut editer le script
 # ce sera corrige dans la prochaine version ;-) J-Ch
 # note : ayant eu des problemes avec les version successives de mplayer
 #        j'ai "arrete" la version a "0.90rc3-2.95.4"
 
 
 # version 0.6.1 - 26/04/2033 - Oli (Olivier at skycode.org)
 # Some bug fixing :
 #       1) looping around every time something is interactively
 #          asked to the user to prevent the script from exiting
 #          and having to do the rest manually
 #          note : there is still some work to do on values checking
 
 # version 0.6 - 25/04/2033 - Oli (Olivier at skycode.org)
 #
 # version 0.5 - J-Ch (dorian at be.linux.org)
 #
 # versions anterieures bulshit ;-)
 
 # Script usage :
 #
 # mdivx.sh -endpos 0:00:00 -ss 0:00:00 -audiochannel 128 -xscale 640 -yscale 480
 #          -audiobitrate 128 -videobitrate 1200 file.vob out.avi
 
 usage="mdivx.sh -e 0:00:00 -s 0:00:00 -a audichannel -x 640 -y 480\n-u audiobitrate -v videobitrate file.vob out.avi"
 
 # Some defaults
 
 audiochanneldef="128"
 xscaledef="640"
 yscaledef="480"
 audiobitratedef="128"
 videobitratedef="1200"
 
 # Option parsing
 
 while getopts ":e:s:a:x:y:u:v:" option
     do
         echo $option
         echo $OPTARG
         case "$option" in
         "e")
             endpos=$OPTARG
             ;;
         "s")
             ss=$OPTARG
             ;;
         "a")
             audiochannel=$OPTARG
             ;;
         "x")
             xscale=$OPTARG
             ;;
         "y")
             yscale=$OPTARG
             ;;
         "u")
             audiobitrate=$OPTARG
             ;;
         "v")
             videobitrate=$OPTARG
             ;;
         *)
             echo "Wrong option somewhere usage :\n"
             echo $usage
             exit 1
         esac
     done
 
 echo $OPTIND
 
 let a=$OPTIND-1
 
 shift $a
 
 echo $1
 
 # Let's sort out all those variable and set up some defaults if not specified by user
 
 if [ "$endpos" ]
     then
         endpos="-endpos $endpos"
     else
         endpos=""
 fi
 
 echo $endpos
 
 if [ "$ss" ]
     then
         ss="-ss $ss"
     else
         ss=""
 fi
 
 echo $ss
 
 if [ "$audiochannel" ]
     then
         audiochannel="-aid $audiochannel"
     else
         audiochannel="-aid $audiochanneldef"
 fi
 
 echo $audiochannel
 
 if [ "$xscale" ]&&[ "$yscale" ]
     then
         scaling="-vop scale=$xscale:$yscale"
     else
         scaling="-vop scale=$xscaledef:$yscaledef"
 fi
 
 echo $scaling
 
 if [ "$audiobitrate" ]
     then
         :
     else
         audiobitrate=$audiobitratedef
 fi
 
 echo $audiobitrate
 echo $videobitrate
 
 if [ -z "$1" ]||[ -z "$2" ]
     then
         echo "Missing file,  usage "
         echo $usage
         exit 2
     elif [ "$1" = "$2" ]
         then
             echo "Same name for source and destination !!!"
             printf "\a" # beep ! ;-)
             exit 3
 fi
 
 
 echo ""
 echo "================================================================================"
 echo "+                                   DO SOUND                                   +"
 echo "================================================================================"
 echo ""
 echo "si la langue n'est pas bonne : -aid 128-160 et -v => donnera la
 lists language"
 echo "ou -alang fr ????"
 
 if [ -e frameno.avi ]
 then
 while [ true ]
 do
     echo "frameno.avi exist ! what do I do now ?"
     echo ""
     echo "c = Continue without make sound"
     echo "d = Delete frameno.avi"
     echo "e = exit "
     echo ""
 
      read TMPVAR
      case $TMPVAR in
         e)
             exit 1
             ;;
         d)
             rm frameno.avi
             mencoder $ss $endpos -ovc frameno $audiochannel -oac mp3lame -lameopts cbr:br=$audiobitrate -o frameno.avi $1
             break
             ;;
         c)
             break
             ;;
         *)
             echo "Answer must be something of c, d, or e, try again :-)"
             echo ""
             continue
             ;;
      esac
 done
 
 else
 mencoder $ss $endpos -ovc frameno $audiochannel -oac mp3lame -lameopts cbr:br=$audiobitrate -o frameno.avi $1
 fi
 
 
 if [ "$videobitrate" ]
     then
         :
     else
         while [ true ]
             do
                 echo ""
                 echo ""
                 echo "Sound encoded, mplayer has suggested to you some bitrate for video"
                 echo "choose to enter it manually or to use script default ($videobitratedef)"
                 echo ""
                 echo "Note : if you specify a video bitrate (with -v option) to this script"
                 echo "it won't ask you this question"
                 echo ""
                 echo "***********************************************************************"
                 echo "* 1) Use script default ($videobitratedef)                             *"
                 echo "* 2) Enter manually video bitrate now                                 *"
                 echo "***********************************************************************"
 
                 # It would be nice to extract mencoder suggestion and give it user :-)
 
                 echo ""
                 echo "Your choice :"
                 read TMPVAR
                 echo ""
 
                 case $TMPVAR in
                     1)
                         videobitrate=$videobitratedef
                         echo "continuing with script default"
                         break
                         ;;
 
                     2)
                         echo "enter video bitrate :"
                         echo ""
                         read BITRATE
                         echo ""
                         videobitrate=$BITRATE
                         echo "continuing with $videobitrate as video bitrate"
                         echo ""
                         break
                         ;;
                     *)
                         echo "choose one of the menu option !! try again :-)"
                         echo ""
                         continue
                 esac
         done
 fi
 
 # mkfifo teste.wav
 # rm frameno.avi
 # mencoder -audiofile teste.wav -ovc frameno -o frameno.avi -oac mp3lame
 # -lameopts abr:br=128 -aid 128 $1 &
 # mplayer -vo null -ao pcm -aofile teste.wav $1
 # rm teste.wav
 
 
 
 echo ""
 echo "================================================================================"
 echo "+                               DO Video Pass 1                                +"
 echo "================================================================================"
 echo ""
 
 mencoder $ss $endpos -oac copy -o /dev/null -ovc lavc -lavcopts vcodec=mpeg4:vbitrate="$videobitrate":vhq:vpass=1 $scaling  $1
 echo ""
 echo "================================================================================"
 echo "+                               DO Video Pass 2                                +"
 echo "================================================================================"
 echo ""
 
 mencoder $ss $endpos -oac copy -o $2 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate="$videobitrate":vhq:vpass=2 $scaling $1
 

Quelques modifs au script de J-Ch pour les divx (j'ai pas touche a celui pour les VCDs) VERSION 0.6

Il y a encore plein de truc qu'on pourrait implementer et il faudrait ecrire une petite doc, sorry j'ai pas eu le temps :-(

VERSION 0.6 (J-ch + Oli)

 # Script pour faire les divx de bonne qualite generalement en 2 CD
 # note: pour le debut et la fin d'encodage , il faut editer le script
 # ce sera corrige dans la prochaine version ;-) J-Ch
 # note : ayant eu des problemes avec les version successives de mplayer
 #        j'ai "arrete" la version a "0.90rc3-2.95.4"
 
 # version 0.6 - Oli (Olivier at skycode.org)
 # version 0.5 - J-Ch (dorian at be.linux.org)
 # versions anterieures bulshit ;-)
 
 # Script usage :
 #
 # mdivx.sh -endpos 0:00:00 -ss 0:00:00 -audiochannel 128 -xscale 640 -yscale 480
 #          -audiobitrate 128 -videobitrate 1200 file.vob out.avi
 
 usage="mdivx.sh -e 0:00:00 -s 0:00:00 -a audichannel -x 640 -y 480\n-u audiobitrate -v videobitrate file.vob out.avi"
 
 # Some defaults
 
 audiochanneldef="128"
 xscaledef="640"
 yscaledef="480"
 audiobitratedef="128"
 videobitratedef="1200"
 
 # Option parsing
 
 while getopts ":e:s:a:x:y:u:v:" option
     do
         echo $option
         echo $OPTARG
         case "$option" in
         "e")
             endpos=$OPTARG
             ;;
         "s")
             ss=$OPTARG
             ;;
         "a")
             audiochannel=$OPTARG
             ;;
         "x")
             xscale=$OPTARG
             ;;
         "y")
             yscale=$OPTARG
             ;;
         "u")
             audiobitrate=$OPTARG
             ;;
         "v")
             videobitrate=$OPTARG
             ;;
         *)
             echo "Wrong option somewhere usage :\n"
             echo $usage
             exit 1
         esac
     done
 
 echo $OPTIND
 
 let a=$OPTIND-1
 
 shift $a
 
 echo $1
 
 # Let's sort out all those variable and set up some defaults if not specified by user
 
 if [ "$endpos" ]
     then
         endpos="-endpos $endpos"
     else
         endpos=""
 fi
 
 echo $endpos
 
 if [ "$ss" ]
     then
         ss="-ss $ss"
     else
         ss=""
 fi
 
 echo $ss
 
 if [ "$audiochannel" ]
     then
         audiochannel="-aid $audiochannel"
     else
         audiochannel="-aid $audiochanneldef"
 fi
 
 echo $audiochannel
 
 if [ "$xscale" ]&&[ "$yscale" ]
     then
         scaling="-vop scale=$xscale:$yscale"
     else
         scaling="-vop scale=$xscaledef:$yscaledef"
 fi
 
 echo $scaling
 
 if [ "$audiobitrate" ]
     then
         :
     else
         audiobitrate=$audiobitratedef
 fi
 
 echo $audiobitrate
 echo $videobitrate
 
 if [ -z "$1" ]||[ -z "$2" ]
     then
         echo "Missing file,  usage "
         echo $usage
         exit 2
     elif [ "$1" = "$2" ]
         then
             echo "Same name for source and destination !!!"
             printf "\a" # beep ! ;-)
             exit 3
 fi
 
 
 echo ""
 echo "================================================================================"
 echo "+                                   DO SOUND                                   +"
 echo "================================================================================"
 echo ""
 echo "si la langue n'est pas bonne : -aid 128-160 et -v => donnera la
 lists language"
 echo "ou -alang fr ????"
 
 if [ -e frameno.avi ]
 then echo "frameno.avi exist ! what to do ?";
      echo "c = Continue without make sound ; d = Delete frameno.avi ; e= exit ";
 
      read TMPVAR
      case $TMPVAR in
         "")
      ;;
  e)
      exit 1
      ;;
  d)
      rm frameno.avi
      mencoder $ss $endpos -ovc frameno $audiochannel -oac mp3lame -lameopts cbr:br=$audiobitrate -o frameno.avi $1
      ;;
  c)
      ;;
  *)
      exit 4
      ;;
      esac
 else
 mencoder $ss $endpos -ovc frameno $audiochannel -oac mp3lame -lameopts cbr:br=$audiobitrate -o frameno.avi $1
 fi
 
 if [ "$videobitrate" ]
     then
         :
     else
         echo ""
         echo ""
         echo "Sound encoded, mplayer has suggested to you some bitrate for video"
         echo "choose to enter it manually or to use script default ($videobitratedef)"
         echo ""
         echo "Note : if you specify a video bitrate (with -v option) to this script"
         echo "it won't ask you this question"
         echo "***********************************************************************"
         echo "* 1) Use script default ($videobitratedef)                             *"
         echo "* 2) Enter manually video bitrate now                                 *"
         echo "***********************************************************************"
 
         # It would be nice to extract mencoder suggestion and give it user :-)
 
         echo ""
         echo "Your choice :"
         read TMPVAR
         echo ""
 
         case $TMPVAR in
             1)
                 videobitrate=$videobitratedef
                 echo "continuing with script default"
                 ;;
 
             2)
                 echo "enter video bitrate :"
                 echo ""
                 read BITRATE
                 echo ""
                 videobitrate=$BITRATE
                 echo "continuing with $videobitrate as video bitrate"
                 echo ""
                 ;;
             *)
                 echo "error choose 1 or 2"
                 exit 4
                 #un peu brutal, faudrait laisser une seconde chance
         esac
 fi
 
 # mkfifo teste.wav
 # rm frameno.avi
 # mencoder -audiofile teste.wav -ovc frameno -o frameno.avi -oac mp3lame
 # -lameopts abr:br=128 -aid 128 $1 &
 # mplayer -vo null -ao pcm -aofile teste.wav $1
 # rm teste.wav
 
 
 
 echo ""
 echo "================================================================================"
 echo "+                               DO Video Pass 1                                +"
 echo "================================================================================"
 echo ""
 
 mencoder $ss $endpos -oac copy -o /dev/null -ovc lavc -lavcopts vcodec=mpeg4:vbitrate="$videobitrate":vhq:vpass=1 $scaling  $1
 echo ""
 echo "================================================================================"
 echo "+                               DO Video Pass 2                                +"
 echo "================================================================================"
 echo ""
 
 mencoder $ss $endpos -oac copy -o $2 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate="$videobitrate":vhq:vpass=2 $scaling $1
 

VERSION 0.5 (J-ch)

 # Script pour faire les divx de bonne qualite generalement en 2 CD
 # note: pour le debut et la fin d'encodage , il faut editer le script
 # ce sera corrige dans la prochaine version ;-) J-Ch
 # note : ayant eu des problemes avec les version successives de mplayer
 #        j'ai "arrete" la version a "0.90rc3-2.95.4"
 
 # version 0.5 - J-Ch (dorian at be.linux.org)
 # versions anterieures bulshit ;-)
 
 # Parametre : end position
 # decommenter la 1ere ou la 2eme ligne suivant que l'on veut ou
 # non terminer l'encodage a telle position
 #endpos="-endpos 0:41:20";
 endpos=""
 
 # Parametre : debut position
 # decommenter la 1ere ou la 2eme ligne suivant que l'on veut ou
 # non debuter l'encodage a telle position
 # note importante : ne correspond en rien avec la -endpos .. faut y aller au pif !
 
 #ss="-ss 0:41:20"
 ss=""
 
 # parametre obsolete ..
 crop="";
 #crop="-vop crop=714:428:0:74"
 
 # Parametre : selection audio channel
 AID="129"
 let BITRATE=1350
 if [ -z "$1" ]||[ -z "$2" ]
 then
 echo "usage : mdivx.sh files.vob out.avi (bitrate)"
 else
     if [ "$1" = "$2" ]
     then echo "Same name for source and destination !!!"
          printf "\a" # beep ! ;-)
     exit 1
     fi
 
     if [ -z "$3" ]
     then echo "default bitrate use: $BITRATE"
     else let BITRATE=$3
          echo "Configured bitrate :$BITRATE"
     fi
 
 echo ""
 echo "================================================================================"
 echo "+                                   DO SOUND                                   +"
 echo "================================================================================"
 echo ""
 echo "si la langue n'est pas bonne : -aid 128-160 et -v => donnera la lists language"
 echo "ou -alang fr ????"
 
 if [ -e frameno.avi ]
 then echo "frameno.avi exist ! what to do ?";
      echo "c = Continue without make sound ; d = Delete frameno.avi ; e = exit ";
 
      read TMPVAR
      case $TMPVAR in
         "")
             ;;
         e)
             exit 1
             ;;
         d)
             rm frameno.avi
             mencoder.divx $ss -ovc frameno -aid $AID -oac mp3lame -lameopts abr:br=128 -o frameno.avi $endpos $1
             ;;
         c)
             ;;
         *)
             exit 1
             ;;
      esac
 else
 mencoder.divx $ss -ovc frameno -aid $AID -oac mp3lame -lameopts abr:br=128 -o frameno.avi $endpos $1
 fi
 
 #mkfifo teste.wav
 #rm frameno.avi
 #mencoder -audiofile teste.wav -ovc frameno -o frameno.avi -oac mp3lame -lameopts abr:br=128 -aid 128 $1 &
 #mplayer -vo null -ao pcm -aofile teste.wav $1
 #rm teste.wav
 echo ""
 echo "================================================================================"
 echo "+                               DO Video Pass 1                                +"
 echo "================================================================================"
 echo ""
 
 mencoder.divx $ss -oac copy -o /dev/null -ovc lavc -lavcopts vcodec=mpeg4:vbitrate="$BITRATE":vhq:vpass=1 $crop $endpos $1 echo ""
 echo "================================================================================"
 echo "+                               DO Video Pass 2                                +"
 echo "================================================================================"
 echo ""
 mencoder.divx $ss -oac copy -o $2 -ovc lavc -lavcopts vcodec=mpeg4:vbitrate="$BITRATE":vhq:vpass=2 $crop $endpos $1
 fi

VCD (1 passe)

 #!/bin/bash
 # script pour la creadtion d'u fichier compatible VCD
 
 if [ -z "$1" ]||[ -z "$2" ]
 then echo "usage : mvcd.sh file.vob file.mpg (channel:128-160)"; exit 1
 fi
 
 if [ -e stream.wav ]
 then rm stream.wav; mkfifo stream.wav;
 else  mkfifo stream.wav
 fi
 
 if [ -e stream.yuv ]
 then rm stream.yuv; mkfifo stream.yuv;
 else mkfifo stream.yuv
 fi
 
 # selection audio channel
 let AID="129"
 if [ -z "$3" ]
 then echo ""; echo "using default channel: 129 !";
 else let AID=$3
 fi
 
 echo "=============================================================================================="
 echo "=                                Do audio & vido Files                                       ="
 echo "=============================================================================================="
 
 echo "";echo " Systeme de transformation ? (default 16:9)"
 echo " a - 16:9 | b - 16:9 -> letterbox | c - normal"
 echo " other -> exit "
 read TMPVAR
 case $TMPVAR in
     "")
         WIDE="-M WIDE2STD"
         ;;
     a)
         WIDE="-M WIDE2STD"
         ;;
     b)
         WIDE="-M WIDE2VCD"
         ;;
     c)
         WIDE=""
         ;;
     *)
         exit 1
         ;;
 esac
 cat stream.yuv| yuvscaler $WIDE -M BICUBIC -O VCD |mpeg2enc -f 2 -b 1150 -o vcd.video.mpg &
 cat stream.wav | sox -c 2 -s -r 48000 -w -t raw - -r 44100 -t wav - | toolame -m s -e -b 224 - vcd.audio.mp2 &
 mplayer $1 -vo yuv4mpeg -aid $AID -ao pcm -aofile stream.wav -waveheader
 
 rm stream.yuv
 rm stream.wav
 
 echo "=============================================================================================="
 echo "=                                     DO MIXING                                              ="
 echo "=============================================================================================="
 
 mplex -v 1 -f 1 -o $2 vcd.video.mpg vcd.audio.mp2
 
 exit 0

Pour sauver un flux

mplayer -dumpstream -dumpfile ....vmw mms://...
mencoder mms://... -o ....wmv -oac copy -ovc copy

Pour réencoder le son

Lorsque le son ne fonctionne pas correctement sur le mediaplayer, la plupart du temps il suffit de le réencoder:

mencoder -oac mp3lame -ovc copy -o new.avi old.avi
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