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I have a simple task - extract subtitle for exact language from tvshows. For example, I want to extract English subtitles from Netflix's show. As you know there're a few different types of subtitles: forced, full and SDH. So I want to extract all of them if it has eng language code.

To extract 1 subtitle from file I used this code for windows:

FOR %%i IN (*.mkv) DO (ffmpeg.exe -i "%%i" -map 0:s:m:language:eng -c copy "%%~ni".eng.srt)

It worked fine with 1 english subtitle per file. But if it contains 2, ffmpeg shows error

SRT supports only a single subtitles stream

MI is...

  • Stream #0:2(eng): Subtitle: subrip
  • Stream #0:3(eng): Subtitle: subrip
  • Stream #0:4(ara): Subtitle: subrip
  • ...

So I should set 2 or more output files. I tried to figure out how to do this and found similar threads on reddit and stacksoverflow. They said there's no way to do this without ffprobe. So I used ffprobe to parse all subtitle tracks and their language code.

FOR %%i IN (*.mkv) DO (ffprobe -loglevel error -select_streams s -show_entries stream=index:stream_tags=language -of csv=p=0 -i %%i > subs.txt)

File contains this info:

  • 2,eng
  • 3,eng
  • 4,ara
  • ...

As I understand I should use integers and set them values 2 and 3. I want to get output like this

  • MovieName.2.eng.srt
  • MovieName.3.eng.srt

If it easier to extract all subs, let it be. I tried to do this too but I dont know how to set integers and use them:( So what I should do? Thanks in advance

TrustFound
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1 Answers1

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For the next unfortunate soul that has to deal with this, I changed this part:

-map 0:s:m:language:eng

into this:

-metadata:s:s:0 language=eng

and it worked out fine, so it is worth a try.

Jeremy Caney
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Henry FB
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