Videogrep
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The code described on this page is available via subversion:
svn co http://activearchives.org/svn/trunk/videogrep
A version created using MLT can be found here.
Description
Videogrep was a "proof of concept" script to demonstrate how a subtitles file could be used as a means of editing (aka "my first and last awk script" -- Murtaugh).
Note that these scripts are not perfect in a number of ways -- one is that they use the microdvd format (see below), and are as a result hardcoded to a particular framerate... A better script would use a more sensible timecode based format, like SRT, but this would be less simple, and the original idea was to make a conceptually simple translation of subtitles to an EDL.
Source
#!/bin/bash # videogrep # Usage: # ./videogrep <movie_file> <search_term> (optional: <subtitle_to_display>) # # The subtitle file to be searched is implicit--it is always named the same # as the movie file, but with a .sub extension. We convert automatically # to .sub when another format (right now only .srt) is used. # # The optional <subtitle_to_display> argument allows a separate .sub file # to be displayed, such that a user can search in one language .sub and # display a separate (for instance, search for English and display Spanish). framerate=15 vid=$1 term=$2 base=${vid%%.*} if [ ! -e $base.sub ] then if [ -e $base.srt ] then echo "Dumping $base.sub from $base.srt..." mplayer "$vid" -sub "$base.srt" -dumpmicrodvdsub -endpos 1 mv dumpsub.sub "$base.sub" fi fi subtitle=${vid%%.*}.sub # look for subtitles as (moviename - ext) + ".sub" dstart=-0.5 # seconds to add to the start time (negative = earlier) dend=2 # seconds to add to the end time echo searching \'$vid\' for \'$term\' using \'$subtitle\'... cat $subtitle | \ egrep -i $2 | \ sed -e 's/{\([[:digit:]]*\)}{\([[:digit:]]*\)}.*/\1 \2/' | \ awk '{ print ($1/'$framerate') " " ($2/'$framerate') }' | \ awk 'BEGIN { cur=0 } { if ($1 > cur) print cur " " $1 " 0" cur = $2 } END { print cur " 10000 0" } ' > videogrep.edl showsub=${3:-$subtitle} mplayer -sub "$showsub" -edl videogrep.edl -fs "$vid"
History
First version of script
#!/bin/sh # videogrep framerate=15 vid=$1 term=$2 subtitle=${vid%%.*}.sub # look for subtitles as (moviename - ext) + ".sub" dstart=-0.5 # seconds to add to the start time (negative = earlier) dend=0.5 # seconds to add to the end time echo searching \'$vid\' for \'$term\' using \'$subtitle\'... cat $subtitle | \ grep -i $2 | \ sed -e 's/{\([[:digit:]]*\)}{\([[:digit:]]*\)}.*/\1 \2/' | \ awk '{ print ($1/'$framerate') " " (($2-$1)/'$framerate') }' | \ awk '{ printf("mplayer -fs '$vid' -ss %0.f -frames %0.f < /dev/null\n", ($1 + '$dstart'), int(($2 - '$dstart' + '$dend')*'$framerate')) }' | \ sh >& /dev/null
Second version, producing an "edl" file, resulting in a seemless playback in mplayer.
#!/bin/sh # videogrep framerate=15 vid=$1 term=$2 subtitle=${vid%%.*}.sub # look for subtitles as (moviename - ext) + ".sub" dstart=-0.5 # seconds to add to the start time (negative = earlier) dend=2 # seconds to add to the end time echo searching \'$vid\' for \'$term\' using \'$subtitle\'... cat $subtitle | \ egrep -i $2 | \ sed -e 's/{\([[:digit:]]*\)}{\([[:digit:]]*\)}.*/\1 \2/' | \ awk '{ print ($1/'$framerate') " " ($2/'$framerate') }' | \ awk 'BEGIN { cur=0 } { if ($1 > cur) print cur " " $1 " 0" cur = $2 } END { print cur " 10000 0" } ' > videogrep.edl showsub=${3:-$subtitle} mplayer -sub "$showsub" -edl videogrep.edl -fs "$vid"
Usage:
./videogrep_edl mymovie.avi "searchterm"
