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#!/bin/bash
# check for mkvextract
command -v mkvextract >/dev/null 2>&1 || { echo >&2 "Requires mkvextract. Aborting."; exit; }
POSITIONAL=();
while [[ $# -gt 0 ]]
do
key="$1";
case $key in
-d|--directory)
DIRECTORY="$2";
shift;
shift;
;;
-f|--file)
FILE="$2";
shift;
shift;
;;
-t|--track)
TRACK="$2";
shift;
shift;
;;
-w|--word)
WORD="$2";
shift;
shift;
;;
-m|--merge)
MERGE=1;
shift;
shift;
;;
esac
done
set -- "{$POSITIONAL[@]}";
# check if out directory exists
# TODO handle case out exists but other subdirs don't
if [ ! -d "out" ]; then
echo "making out directory..";
mkdir out;
mkdir out/clips;
fi
if ! [[ -z $FILE || -z $DIRECTORY ]]; then
echo "You have both -d and -f set.. choose one, not both..";
exit;
fi
if [[ -z $FILE && -z $DIRECTORY ]]; then
echo "no file or directory provided (use -f [file] or -d [dir])..";
exit;
fi
if [ -z "$TRACK" ]; then
#assume subtitle track = 2
echo "track not set (use -t [truck number]). You kind find the subtitle track number using 'mkvinfo [file]'..";
exit;
fi
if [ -z "$WORD" ]; then
echo "no word set, using default word (use -w [word] to set the word)..";
WORD="idiot"; # baka~
fi
if ! [ -z "$FILE" ]; then
#echo "using single file..";
SINGLEFILE=true;
fi
if ! [ -z "$DIRECTORY" ]; then
#echo "using directory";
SINGLEFILE=false;
fi
# we're done the boring stuff
x=0;
function getsubs
{
# $1 = file
#echo "getting subs for "$1"";
rm out/subs.srt;
CFILE=$(basename "$1" .mkv);
#echo "CFILE is "$CFILE"";
#echo "extracting subs from $1 track ${TRACK} to out/subs.srt";
mkvextract tracks "$1" ${TRACK}:out/subs.srt;
grepsubs "$1" "$CFILE";
}
function grepsubs
{
# $1 = file $2 = CFILE
while read -r line; do
((x++));
#echo "line in grep ${line}";
#parselinie $x "$1" $line;
parseline "$1" "$line" "$2";
done < <(grep -i "$WORD" out/subs.srt);
}
function parseline
{
# $1 = file $2 = line $3 = CFILE
IFS=',' read -r -a array <<< "$2";
echo "start time: ${array[1]}";
echo "end time: ${array[2]}";
cutvideo "$1" "${array[1]}" "${array[2]}" "$3";
}
function cutvideo
{
# $1 = file $2 = start time $3 = end time $4 = CFILE
ffmpeg -i "$1" -ss 0"$2" -to 0"$3" -async 1 -c:v libx264 -preset ultrafast out/clips/clip_"$x".mkv < /dev/null
}
function merge
{
echo "merging mkv's..";
str=();
x=0;
for f in out/clips/*.mkv; do
if [ $x == 0 ]; then
str+=""$f"";
fi
if [ $x != 0 ]; then
str+=" +"$f"";
fi
((x++));
done;
mkvmerge $str -o out/out.mkv
}
# getsubs function will run the chain that does the whole process
if ! [ -z "$MERGE" ]; then
merge;
exit;
fi
if [ $SINGLEFILE == true ]; then
echo "doing one file";
getsubs "$FILE";
fi
if [ $SINGLEFILE == false ]; then
for f in "$DIRECTORY"/*.mkv; do
getsubs "$f";
done;
fi
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