mirror of https://github.com/mpv-player/mpv
Nits suggested by Ivo and Diego. Patch by Matthias Wieser < mwieser AH gmx POIS de >
Original thread: Date: Oct 2, 2005 7:12 PM Subject: Re: Fwd: [MPlayer-cvslog] CVS: main/TOOLS psnr-video.sh, NONE, 1.1 README, 1.9, 1.10 git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@16637 b3059339-0415-0410-9bf9-f77b7e298cf2
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gpoirier
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@ -1,11 +1,39 @@
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#!/bin/sh
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# Helper script to ease comparing the PSNR between two video files
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# Copyleft 2005 by Matthias Wieser
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# Copyleft 2005 by Ivo
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# This file comes under GPL, see http://www.gnu.org/copyleft/gpl.html for more
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# information on its licensing.
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warning_frame_number () {
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echo "Files have differing numbers of frames!"
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echo "$FILE1 has `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` frames,"
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echo "$FILE2 has `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
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echo "Processing the first `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
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}
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TEMPDIR="/tmp/psnr_video"
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WORKDIR=`pwd`/
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WORKDIR=`pwd`
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exit=0
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if [[ `which pnmpsnr 2> /dev/null` = "" ]]
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then
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echo
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echo "To use this script you have to install the program \"pnmpsnr\" which is"
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echo " included in the netpbm package."
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echo
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exit=1
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fi
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if [[ `which bc 2> /dev/null` = "" ]]
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then
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echo
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echo "To use this script you have to install the GNU command line calculator \"bc\"."
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echo
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exit=1
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fi
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if [ $# -le 1 ]; then
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echo
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echo "Usage: `basename $0` <file1> <file2> [<frames>] [<options1>] [<options2>]"
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@ -21,6 +49,10 @@ if [ $# -le 1 ]; then
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echo " ./`basename $0` ./orig.avi ./test.avi 250 \"\" \"-vf pp=ac\""
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echo
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exit=1
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fi
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if [ "$exit" -eq 1 ]; then
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exit 1
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fi
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@ -44,6 +76,7 @@ if [ $# -ge 5 ]; then
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echo "Mplayer options for ${FILE2}: $FILE2_Options"
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fi
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mkdir -p ${TEMPDIR}/FILE1
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mkdir -p ${TEMPDIR}/FILE2
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@ -57,12 +90,12 @@ rm -f *ppm
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rm -f *del
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if [ $LastFrame -ge 0 ]; then
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mplayer $FILE1_Options -frames $LastFrame -nosound -vo pnm ${WORKDIR}$FILE1 >/dev/null
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mplayer $FILE1_Options -frames $LastFrame -nosound -vo pnm ${WORKDIR}/$FILE1 >/dev/null
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else
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mplayer $FILE1_Options -nosound -vo pnm ${WORKDIR}$FILE1 > /dev/null
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mplayer $FILE1_Options -nosound -vo pnm ${WORKDIR}/$FILE1 > /dev/null
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fi
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### File 2
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### File 2
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echo
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echo "############## $FILE2 #################"
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@ -71,9 +104,9 @@ cd ${TEMPDIR}/FILE2
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rm *ppm 2> /dev/null
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if [ $LastFrame -ge 0 ]; then
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mplayer $FILE2_Options -frames $LastFrame -nosound -vo pnm ${WORKDIR}$FILE2 >/dev/null
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mplayer $FILE2_Options -frames $LastFrame -nosound -vo pnm ${WORKDIR}/$FILE2 >/dev/null
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else
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mplayer $FILE2_Options -nosound -vo pnm ${WORKDIR}$FILE2 >/dev/null
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mplayer $FILE2_Options -nosound -vo pnm ${WORKDIR}/$FILE2 >/dev/null
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fi
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@ -86,10 +119,7 @@ if [[ `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` = `ls -1 ${TEMPDIR}/FILE2/*ppm | wc
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then
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echo
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else
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echo "Files have differing numbers of frames!"
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echo "$FILE1 has `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` frames,"
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echo "$FILE2 has `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
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echo "Processing the first `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
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warning_frame_number
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echo
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fi
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@ -104,47 +134,45 @@ for FILE in `ls -1 *.ppm`
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echo $FILE
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echo -n "$FILE">>../psnr.dat
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echo -n ";">>../psnr.dat
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pnmpsnr ../FILE1/$FILE $FILE 2> del.del
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grep "Y" del.del | dd bs=1c count=5 skip=29 of=del2.del 2>/dev/null
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Y=`cat del2.del`
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echo -n "$Y;">>../psnr.dat
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grep "Cb" del.del | dd bs=1c count=5 skip=29 of=del2.del 2>/dev/null
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CB=`cat del2.del`
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echo -n "$CB;">>../psnr.dat
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grep "Cr" del.del | dd bs=1c count=5 skip=29 of=del2.del 2>/dev/null
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CR=`cat del2.del`
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echo -n "$CR;">>../psnr.dat
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YCBCR=`pnmpsnr ../FILE1/$FILE $FILE 2>&1 | tail -n 3 | cut -f 3 -d ':' | \
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( read Y X; read CB X; read CR X; echo "$Y;$CB;$CR;")`
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Y=`echo $YCBCR | cut -f 1 -d ';'`
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CB=`echo $YCBCR | cut -f 2 -d ';'`
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CR=`echo $YCBCR | cut -f 3 -d ';'`
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echo $YCBCR >>../psnr.dat
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ALL=`echo "(-10)*l((e(-$Y/10*l(10))+e(-$CB/10*l(10))/4+e(-$CR/10*l(10))/4)/1.5)/l(10)"|bc -l`
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echo "$ALL">>../psnr.dat
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ERROR=`echo "scale=30; (e(-1*$Y/10*l(10))+e(-1*$CB/10*l(10))/4+e(-1*$CR/10*l(10))/4)/1.5"|bc -l`
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ERRORSUM=`cat errorsum.del`
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echo `echo "scale=30; $ERROR + $ERRORSUM" | bc -l` > errorsum.del
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echo `echo "scale=30; $ERROR + $ERRORSUM"|bc -l` > errorsum.del
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i=$(($i+1))
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if [[ $i = $LastFrame ]]
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then
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break
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fi
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done
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ERRORSUM=`cat errorsum.del`
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PSNR=`echo "-10*l($ERRORSUM/$i)/l(10)" | bc -l`
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echo "PSNR:;$PSNR">>../psnr.dat
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cd ..
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mv psnr.dat ${WORKDIR}
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mv psnr.dat ${WORKDIR}/
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if [[ `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` = `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` ]]
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then
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echo
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else
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echo "Files have differing numbers of frames!"
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echo "$FILE1 has `ls -1 ${TEMPDIR}/FILE1/*ppm | wc -l` frames,"
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echo "$FILE2 has `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
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echo "Processed the first `ls -1 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
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warning_frame_number
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echo
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fi
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cd ..
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rm -r ${TEMPDIR}
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echo "Created ${WORKDIR}psnr.dat"
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echo "Created ${WORKDIR}/psnr.dat"
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echo
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