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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@16474 b3059339-0415-0410-9bf9-f77b7e298cf2
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18
TOOLS/README
18
TOOLS/README
@ -260,15 +260,15 @@ Author: Matthias Wieser
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Description: Calculates the PSNR between two existing video files.
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The PSNR is calculated frame by frame.
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Prints also the overall PSNR.
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Also prints the overall PSNR.
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The script can be used to:
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* compare different softwarescalers (should I use
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-sws 1 or -sws 2) ?
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* compare different resolutions (is it better to scale
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* Compare different softwarescalers (should I use
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-sws 1 or -sws 2 ?)
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* Compare different resolutions (is it better to scale
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down to 640x360 or to 560x320)
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* compare different deinterlacers
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* compare different video codecs
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* compare video filters (is it better to use -vf hqdn3d
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* Compare different deinterlacers
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* Compare different video codecs
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* Compare video filters (is it better to use -vf hqdn3d
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or lavcopts:nr=400)
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* [...]
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@ -281,7 +281,7 @@ Usage: psnr-video.sh <file1> <file2> [<frames>] [<options1>] [<options2>]
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[<options1>] are additional MPlayer options for <file1>
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[<options2>] are additional MPlayer options for <file2>
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A file called psnr.dat will be created with the following
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A file called ./psnr.dat will be created with the following
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content:
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File;Y;Cb;Cr
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@ -295,7 +295,7 @@ Usage: psnr-video.sh <file1> <file2> [<frames>] [<options1>] [<options2>]
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Note: This script relies on the the tool "pnmpsnr" for the
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frame-by-frame PSNR calculation.
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Be aware that psnr-video.sh needs a lot of temporal space
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Be aware that psnr-video.sh needs a lot of temporary space
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inside /temp/.
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@ -1,8 +1,8 @@
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#!/bin/sh
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# Helper script to ease comparing two video files
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# Copyleft 2001 by Matthias Wieser
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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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# This file comes under GPL, see http://www.gnu.org/copyleft/gpl.html for more
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# information on it's licensing.
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# information on its licensing.
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TEMPDIR="/tmp/psnr_video"
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WORKDIR=`pwd`/
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@ -10,12 +10,12 @@ 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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echo
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echo " <file1> and <file2> are the video files for which the PSNR should be calculated."
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echo " <file1> and <file2> are the files for which the PSNR should be calculated."
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echo " [<frames>] is the number of frames to process, starting from frame 1."
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echo " [<options1>] are additional MPlayer options for <file1>"
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echo " [<options2>] are additional MPlayer options for <file2>"
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echo " [<options1>] are additional MPlayer options for <file1>."
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echo " [<options2>] are additional MPlayer options for <file2>."
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echo
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echo " Be aware that `basename $0` needs a lot of temporal space inside /temp/."
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echo " Be aware that `basename $0` needs a lot of temporary space inside /tmp/."
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echo
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echo "Example:"
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echo " ./`basename $0` ./orig.avi ./test.avi 250 \"\" \"-vf pp=ac\""
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@ -31,17 +31,17 @@ LastFrame=-1
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if [ $# -ge 3 ]; then
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LastFrame=$3
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echo
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echo "Will process $LastFrame frames"
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echo "Will process $LastFrame frames."
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fi
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if [ $# -ge 4 ]; then
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FILE1Opts=$4
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echo "Mplayer options for ${FILE1}: $FILE1Opts"
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FILE1_Options=$4
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echo "MPlayer options for ${FILE1}: $FILE1_Options"
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fi
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if [ $# -ge 5 ]; then
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FILE2Opts=$5
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echo "Mplayer options for ${FILE2}: $FILE2Opts"
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FILE2_Options=$5
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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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@ -53,13 +53,13 @@ echo "############## $FILE1 #################"
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cd ${TEMPDIR}/FILE1
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rm *ppm 2> /dev/null
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rm *del 2> /dev/null
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rm -f *ppm
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rm -f *del
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if [ $LastFrame -ge 0 ]; then
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mplayer $FILE1Opts -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 $FILE1Opts -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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@ -71,25 +71,25 @@ 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 $FILE2Opts -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 $FILE2Opts -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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### PSNR
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echo
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echo "############## Calculation PSNR #################"
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echo "############## PSNR Calculation #################"
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if [[ `ls -1 ${TEMPDIR}/FILE1/*ppm|wc -l` = `ls -1 ${TEMPDIR}/FILE2/*ppm|wc -l` ]]
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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 "Processing the first `ls -1 ${TEMPDIR}/FILE2/*ppm|wc -l` frames."
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echo "$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 ${TEMPDIR}/FILE2/*ppm | wc -l` frames."
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echo
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fi
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@ -118,7 +118,7 @@ for FILE in `ls -1 *.ppm`
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echo "$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 = $LastFrame ]]
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then
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@ -126,19 +126,19 @@ for FILE in `ls -1 *.ppm`
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fi
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done
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ERRORSUM=`cat errorsum.del`
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PSNR=`echo "-10*l($ERRORSUM/$i)/l(10)"|bc -l`
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PSNR=`echo "-10*l($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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if [[ `ls -1 ${TEMPDIR}/FILE1/*ppm|wc -l` = `ls -1 ${TEMPDIR}/FILE2/*ppm|wc -l` ]]
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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 ${TEMPDIR}/FILE2/*ppm|wc -l` frames."
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echo "$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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echo
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fi
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