Video encoding
Revision as of 01:14, 16 December 2013 by <bdi>PhilippeTeuwen</bdi> (talk | contribs) (→Pour sauver un flux)
Converted with HTML::WikiConverter::MediaWiki from my old phpwiki site
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