如何从多个 MVK 文件中提取并重命名 .ass 字幕？

Question

我有一大堆 mkv 文件想要在我的蓝光播放器上播放。但是它不会读取字幕，除非它们不在文件中。我需要一种方法来提取并重命名它们。我想给它们起一个与它们来自的 mkv 文件相同的名称，这样我的播放器就可以读取它们。字幕是 .ass 格式。

我看到一个流传的脚本，据说可以实现这个功能。但是没有用。

我已经安装了 mkvExtractor 和所有相关软件，但是文件太多了，无法手动完成所有操作。

这是我尝试过的脚本。

#!/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
    # 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 [ $langtest -ge 10 ]; then
      # Regex to remove credits at the end of subtitles (read my reason why!)
      `sed 's/\r//g' < "$subtitlename.srt.tmp" \
        | sed 's/%/%%/g' \
        | awk '{if (a){printf("\t")};printf $0; a=1; } /^$/{print ""; a=0;}' \
        | grep -iv "$trimregex" \
        | sed 's/\t/\r\n/g' > "$subtitlename.srt"`
      `rm "$subtitlename.srt.tmp"`
      `chmod g+rw "$subtitlename.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

难道我做错了什么？