Created
March 3, 2018 03:17
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extract srt from mkv container with mkvtoolnix
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#!/bin/bash | |
# Extract subtitles from each MKV file in the given directory | |
# If no directory is given, work in local dir | |
if [ "$1" = "" ]; then | |
DIR="." | |
else | |
DIR="$1" | |
fi | |
# Get all the MKV files in this dir and its subdirs | |
find "$DIR" -type f -name '*.mkv' | while read filename | |
do | |
# Find out which tracks contain the subtitles | |
mkvmerge -i "$filename" | grep 'subtitles' | while read subline | |
do | |
echo $subline | |
# Grep the number of the subtitle track | |
tracknumber=`echo $subline | egrep -o "[0-9]{1,2}" | head -1` | |
# Get base name for subtitle | |
subtitlename=${filename%.*} | |
# Extract the track to a .tmp file | |
`mkvextract tracks "$filename" $tracknumber:"$subtitlename.srt.tmp" > /dev/null 2>&1` | |
`chmod g+rw "$subtitlename.srt.tmp"` | |
# Do a super-primitive language guess: ENGLISH | |
langtest=`egrep -ic ' you | to | the ' "$subtitlename".srt.tmp` | |
trimregex="" | |
# Check if subtitle passes our language filter (10 or more matches) | |
if [ $langtest -ge 10 ]; then | |
`mv "$subtitlename.srt.tmp" "$subtitlename.en.srt"` | |
else | |
# Not our desired language: add a number to the filename and keep anyway, just in case | |
`mv "$subtitlename.srt.tmp" "$subtitlename.$tracknumber.srt" > /dev/null 2>&1` | |
fi | |
done | |
done |
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