I have opened a post in spanish forum about mencoder.
Code:
#!/bin/bash
#
# Copyright (C) 2003-2038 russiansexpat
#
# script: mpeg(1,2,3,4) conversion to (S,X)VCD with quantisation matrix
# and auto-splitting into multiple CDs and writing them.
#
# requires: mencoder(1.0pre3) mplayer mplex vcdimager cdrdao
# optional: normalize toolame(0.2k)
#
# does not require: microsoft. This script has not been tested on animals.
#
# version 0.3
#
# Changeslog
#
# - Added subtitle suport (Alexandre Possebom(otzi))
#
for exe in mencoder mplayer mplex vcdim
ager cdrdao; do
if [ -z "`which $exe`" ]; then
echo "ERROR: $exe must be in your path $PATH"
exit 1
fi
done
MATRIX="\
intra_matrix=\
8,9,12,22,26,27,29,34,\
9,10,14,26,27,29,34,37,\
12,14,18,27,29,34,37,38,\
22,26,27,31,36,37,38,40,\
26,27,29,36,39,38,40,48,\
27,29,34,37,38,40,48,58,\
29,34,37,38,40,48,58,69,\
34,37,38,40,48,58,69,79:\
inter_matrix=\
16,18,20,22,24,26,28,30,\
18,20,22,24,26,28,30,32,\
20,22,24,26,28,30,32,34,\
22,24,26,30,32,32,34,36,\
24,26,28,32,34,34,36,38,\
26,28,30,32,34,36,38,40,\
28,30,32,34,36,38,42,42,\
30,32,34,36,38,40,42,44\
"
Q="6" # constant video quality
# best=2 excellent<=4 good<=7 even=11 for mpeg1 VCD resolution
# excellent<=6 good<=9 even=13 for mpeg2 SVCD resolution
#---------- below you can edit parameters ----------
# audio bitrate
AUDIORATE=112 # constant
#AUDIORATE=384 # variable with frequency 48kHz in 112-384kbs band
# frame rate conversion (has to be first in processing chain)
#FRC="-fps 29.97 -ofps 29.97 -vf telecine,lavcdeint," # example to increase fps
#FRC="-fps 29.97 -ofps 29.97 -vf " # NTSC
FRC="-fps 25 -ofps 25 -vf " # PAL
#FRC="-fps 23.976 -ofps 23.976 -vf " # NTSC pulldowned
#FRC="-fps 29.97 -ofps 23.976 -vf filmdint=fast=3," # example to decrease fps
#FRC="-vf " # fps not changed
# video filters
#vfilter="pp=de,denoise3d,eq,"
# aspect view of output;
# it should be the same as aspect view of the source mpeg(1,2)
# or equal to width/length if source aspect undefined (example: avi, capture)
# and your player has to be capable to process chosen aspect
#
#ASPECT="1" # 1:1 where have you seen square TV ?!
ASPECT="1.3333" # 4:3 standard TV or monitor
#ASPECT="1.7777" # 16:9 wide screen TV
#ASPECT="1.85" # film academy flat
#ASPECT="2.35" # cinema scope
#crop="crop=320:240," # crop, cut out black bands
#expand="expand=320:240," # expand to match aspect view, black bands added
# for xvcd
#XY="352:240"
XY="352:576"
VCODEC=mpeg1video
VBuffer=376 # Kbits = 46*1024*8/1000
#MUXMODE="-f 2 -V -b 46"
#IMAMODE="-t vcd2"
# for svcd
#XY="480:480"
#XY="480:576"
#VCODEC=mpeg2video
#VBuffer=917 # Kbits = 112*1024*8/1000
MUXMODE="-f 5 -V -b 112"
#IMAMODE="-t svcd"
# scaling algorithm
#SWS=0 # fast bilinear
#SWS=2 # bicubic, for upscaling
SWS=9 # lanczos, quality
# macroblock decision algorithm
#MBD=0 # compare blocks, fast
#MBD=1 # fewest bits
MBD=2 # best rate distortion
# group of pictures length - the longer is better compression, but
# it relies on a player decoder and so resulting playback quality
GOP=25 # dvd pal gop <=15, ntsc <=18 but in practice gop can be longer
# various mencoder -lavcopts parameters
ulavcopts1=":vmax_b_frames=2:vb_strategy=1:vqblur=0.3:vqcomp=0.7:vrc_eq=tex"
ulavcopts2=":naq:lumi_mask=0.05:dark_mask=0.01:tcplx_mask=0.1:scplx_mask=0.1"
ulavcopts3=":preme=1:precmp=2:cmp=2:subcmp=2:mbcmp=2:predia=2:dia=2:trell:cbp"
PASS="single"
#PASS="1st 2nd"
# mencoder verbosity
#NOTverbose="2> /dev/null"
#NOTverbose="&> /dev/null"
#CDSIZE=735 # 74min CD
CDSIZE=795 # 80min CD
#CDSIZE=895 # 90min CD
# cdrdao parameters
CDOPT="--overburn --reload --eject"
CDDEV="--device 0,1,0" # SCSI id
# Subtitle settings
blur=4
subpos=75
textscale=4
outline=4
autoscale=2
#---------- above you can edit parameters ----------
FILE=$2
tmp=`echo $FILE | sed s/\....$//`
SUB=""
[ -f "${tmp}".sub ] && SUB="-sub ${tmp}.sub -subpos ${subpos} -subfont-autoscale ${autoscale} -subfont-outline ${outline} -subfont-text-scale
${textscale}"
[ -f "${tmp}".srt ] && SUB="-sub ${tmp}.srt -subpos ${subpos} -subfont-autoscale ${autoscale} -subfont-outline ${outline} -subfont-text-scale ${textscale}"
tmp=""
function usage() {
echo
echo "Usage: $HOWCALLED <shrunk name> <file or mplayer source> [quality [$Q]]"
echo
echo "qualilty: best=2 excellent<=4 good<=7 even=11 - XVCD"
echo " excellent<=6 good<=9 even=13 - SVCD"
echo
echo "result: (S,X)VCD and mpeg(1,2) encoded with $HOWCALLED."
echo
exit 1
}
# command line parsing
HOWCALLED=`basename $0`
[ $# -lt 2 ] && usage
case $1 in
-*)
usage
;;
*)
NAME=$1
shift 1
;;
esac
DIR="`pwd`"
FILE=$1
if [ "$1" == "`basename \"$1\"`" ]; then
FILE="$DIR/$1"
fi
shift 1
if [ "$1"x != "x" ]; then
Q=$1
shift 1
fi
COMMAND_LINE_MENCODER=$*
# encoding
rm -f divx2pass.log
rm -f frameno.avi
for word in $PASS ; do
MOVIE=$NAME.mpg
[ "$word" == "single" ] && pass=""
[ "$word" == "1st" ] && pass=":vpass=1"
[ "$word" == "1st" ] && MOVIE="/dev/null"
[ "$word" == "2nd" ] && pass=":vpass=2"
command="mencoder $SUB \
-forceidx -srate 44100 -af resample=44100 \
-lavdopts er=1:idct=0 $FRC${vfilter}${crop}${expand}scale=$XY -sws $SWS \
-of mpeg -oac lavc -ovc lavc \
-lavcopts acodec=mp2:abitrate=$AUDIORATE:aspect=$ASPECT:vcodec=$VCODEC:$MATRIX:idct=0:mbd=$MBD:vqscale=$Q:vrc_minrate=300:vrc_maxrate=2300:vrc_buf_size=$VBuffer:keyint=$GOP${ulavcopts1}${ulavcopts2}${ulavcopts3}$pass \
$COMMAND_LINE_MENCODER $FILE -o $MOVIE"
echo "$command $NOTverbose"
eval "$command $NOTverbose"
done
echo -e "\nyou will wait :p\n"
if [ $AUDIORATE != 384 ]; then
# fixed audio rate
eval "mplayer -noframedrop -dumpvideo -dumpfile $NAME.mpv $MOVIE $NOTverbose "
eval "mplayer -noframedrop -dumpaudio -dumpfile $NAME.mpa $MOVIE $NOTverbose "
else
# re-encoding into variable audio rate
eval "mplayer -noframedrop -srate 48000 -dumpvideo -dumpfile $NAME.mpv $MOVIE $NOTverbose"
AUDIO=$NAME.wav
###rm -f $AUDIO
###mkfifo -m 660 $AUDIO
eval "mplayer -noframedrop -vc dummy -vo null -ao pcm -waveheader -af resample=48000 -aofile $AUDIO $MOVIE $NOTverbose"
eval "normalize -v --fractions $AUDIO" # normalize can't work from pipe
command="cat $AUDIO | toolame -s 48 -m s -v -1 - $NAME.mpa"
echo "$command"
eval "$command"
fi
wait
#rm -f $MOVIE
#rm -f $AUDIO
# end of encoding
# multiplexing
#rm -f $NAME?.mpg
eval "mplex $MUXMODE -S $CDSIZE -o $NAME%d.mpg $NAME.mpv $NAME.mpa"
#rm -f $NAME.mpv $NAME.mpa
exit 0
# last line of this script
P.S. excuse me for my bad english
