New answers tagged file-formats
Add the subtitles to your large mkv file first. Then mkvmerge will split the file with the subtitles automatically. To add the subtitles, the easiest is to use mkvmerge-GUI. It will also show you the command-line it uses. Or you can try something like this directly: video="your_large_video.mkv" st_en="english.srt" st_fr="french.srt" ...
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