How to write subtitles into specified file name

[ghost]

Is there any way to write video subtitles into specified file name?

In my program I need to read subtitles. But youtube-dl write subtitles into unexpected file names.

So, I want to write subtitles into specific file names and read output srt files for subtitles. Is it possible?

[jaimeMF]

The filenames for the subtitles are predictable, you just replace the extension with {lang_code}.srt. For example, for youtube-dl 'QRS8MkLhQmM' --write-sub, the video filename is YouTube Captions and Subtitles-QRS8MkLhQmM.mp4 and the subtitles are saved to YouTube Captions and Subtitles-QRS8MkLhQmM.en.srt. If you want, you can specify the output template (for example -o "video.%(ext)s") or you can get the default filename by running youtube-dl 'QRS8MkLhQmM' --get-filename.

If you just need to get the subtiltes content, you can also use youtube-dl 'QRS8MkLhQmM' --write-sub --dump-json and look into the subtitles entry.

[ghost]

It's very useful answer. Thank you very much...