[MPlayer-dev-eng] [script] dvd_extract

[A Mennucc1]

hi everybody

I have written a short shell script that implements the tips
in  http://mplayerhq.hu/DOCS/encoding.html 

you may wish to add it in the TOOLS in the distribution
(it can be useful to newbies)

a.


ps:
  my previous e-mail was messy, sorry.
  I will post a correct e-mail for the -vm  bug 

On Tue, Mar 25, 2003 at 09:09:54PM +0100, Arpi wrote:
> Hi,
> 
> > I see two bugs in the -vm implementatio
> 
> > 1)
> > I have ripped the DVD of Lord Of the rings
> > (that I own    :-)  )
> 
> 1)
> this is not mplayer-users list
> do not send (incomplete, useless) bugreports here
> 
> > 2) sometimes mplayer crashes after it changes videomode
> 
> 2)
> RTFM docs/bugreports.html
> 
> 3)
> Since developers don't have that dvd, either send it to us, or
> upload sample file, the script using to rip it is not enough...
> 
> 4)
> never cut mplayer log
> 
> 
> A'rpi / Astral & ESP-team
> 

-- 
Andrea Mennucc
 "E' un mondo difficile. Che vita intensa!" (Tonino Carotone)
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#!/bin/bash -e

## dvd_extract :  a front end for mencoder to rip DVDs at best

## based on http://mplayerhq.hu/DOCS/encoding.html

# Copyright A. Mennucc1   Mar 2003
# Licenxe: GPL


#Usage:  edit these variables at taste but do not put spaces
#  call as    dvd_extract  movie_name

VOP=''
## if the video is interlaced, uncomment
#VOP='pp=lb'

LANG=en

DVD='-dvd 1 -alang '$LANG' -dvd-device /dev/cdrom -cache 8192'

A='-oac mp3lame -lameopts preset=128'

LAVC='vhq:vqmin=2:vlelim=-4:vcelim=9:lumi_mask=0.05:dark_mask=0.01'

V='-ovc lavc -lavcopts vcodec=mpeg4'

SUB=''
##uncomment for subtitles
#SUB=" -slang $LANG -vobsubout $B -vobsuboutindex 0"

#this is the fallback if not autodetected
# it is also a max to the autodetected one
BITRATE=1100

#megabytes of the CD:  must be on ofe 650 700 or 800
MB=700

#percent used in the CD: to allow some space for subtitles
CDPC=97

#autodetect CROP
CROP=''
#CROP="crop=w:h:x:y"

#autodetect aspect
ASPECT=''
#ASPECT='2.418'


#########################

[ "$B" ] || { echo provide file name, without .avi extension ; exit ; }

[ "$TIMING_DVD_EXTRACT" ] ||  { [ -x /usr/bin/time ] && \
 { TIMING_DVD_EXTRACT=yes /usr/bin/time  $0 "$@" ;  exit ; } ; }

B="$1"
shift



mkdir ${B}_tmp  || { echo -e \\a ============ REUSING DIR ; sleep 3 ; }
cd ${B}_tmp


if [ "$CROP" == "" -o "$ASPECT" = "" ] && [ ! -r cropping.log ] ; then
 echo ============= CHECKIN CROPPING AND/OR ASPECT
   mplayer -quiet -ss 800 -frames 800 -vo null -ao null \
          -vop cropdetect  $DVD  > cropping.log
fi

if [ "$CROP" == ""  ] ; then
 CROP=$( sed 's/.*-vop //;s/).*//' cropping.log | grep crop | tail -1 )
 echo ============= CROPPING to $CROP
fi

if [ "$ASPECT" = "" ] ; then
 ASPECT=$(grep 'Movie-Aspect is ' cropping.log | \
                 sed 's/Movie-Aspect is //;s/:.*//'  )
 echo ============ ASPECT $ASPECT
fi


if [ "$ASPECT" -a "$CROP"  ] ; then
  ASPECT=$( echo $CROP | cut -d= -f2 |\
        awk 'BEGIN{FS=":"};{print $1 / 720 / ( $2 / 576 ) * '"$ASPECT"'}' )
 echo ============ ASPECT $ASPECT after crop
fi

M="mencoder $DVD $@"


if [ -r frameno.avi ] ; then
 echo -e \\a ============= REUSING frameno ; sleep 3 
else
 echo ==================== AUDIO PASS
 trap 'rm frameno.avi' 0
 $M $SUB -ovc frameno $A -o frameno.avi | tee audioenc.log || rm frameno.avi
 trap '' 0
fi

b=$( grep 'Recommended video bitrate for '"$MB"'MB CD:' audioenc.log | cut -d: -f2 )
if [ "$b" ] ; then
 b=$( expr $b \* $CDPC / 100 ) 
 if [ $b -gt $BITRATE ] ; then
  echo ==============BITRATE FORCED FROM $b to $BITRATE
  b=$BITRATE
 else
  echo ==============BITRATE $b
 fi
else
 b=$BITRATE
 [ "$b" ] || echo -n 'BITRATE ? ' ; read b
fi

ASP=''
[ "$ASPECT"  ] && ASP='aspect='$ASPECT

if [ -r divx2pass.log ] ; then
 echo =============== REUSING divx2pass.log
else
 echo ==================== VIDEO PASS 1
 trap 'rm divx2pass.log' 0
 $M ${V}:$LAVC:$ASP:vpass=1:vbitrate=$b -vop $CROP:$VOP \
    -oac copy -o $B.avi | tee videoenc1.log || rm divx2pass.log
fi

echo ==================== VIDEO PASS 2
trap '' 0 
$M ${V}:$LAVC:$ASP:vpass=2:vbitrate=$b -vop $CROP:$VOP \
    -oac copy -o $B.avi | tee videoenc2.log

mv -v --backup=numbered  $B* ..



exit
#echo -n 'which bitrate? ' ; read b
########################
#rm  frameno.avi subtitles.idx subtitles.sub divx2pass.log test.avi || true
# -vop cropdetect
#[ -r frameno.avi ] || \
#  $M  -ovc frameno -oac mp3lame -lameopts vbr=3  -o frameno.avi
#$M -oac copy -ovc divx4 -divx4opts pass=1
#$M -oac copy -ovc divx4 -divx4opts pass=2 -vobsubout subtitles -vobsuboutindex 1 -sid 5
#-vobsubout subtitles -vobsuboutindex 0 -sid 2 -o frameno.avi -ovc frameno -oac mp3lame -lameopts vbr=3   -ovc lavc   -lavcopts vcodec=mpeg4:aspect=16.0/9.0