Either this tool or ffmpeg would have to implement OCR to convert bitmap subtitles to text subtitles. mks file, and I suspect that's what this tool is doing as well. mkvToolnix will extract bitmap subtitles to a. mkv file that has bitmap subtitles won't work, whether from the command line or using a GUI utility like mkvToolnix. That said, trying to extract text subtitles, like. Unfortunately, there are multiple issues being discussed, not all having to do with subtitles. The name of the file is irrelevant to the. If the tool is installed and in your $PATH it will run. Subtitle encoding currently only possible from text to text or bitmap to bitmap
srt extension and provides this helpful error message: The lines of binary gibberish above are from subtitles.srt. $ mkvextract tracks video.mkv 2:subtitles.srtĮxtracting track 2 with the CodecID 'S_HDMV/PGS' to the file 'subtitles.srt'. Usually ffmpeg is good about honoring the file extension you provide, if I remember right.Īnd just in case there are any doubts, here are the actual lines from the command-line session, except I've changed the filenames: Here are the first couple of �ÄÄ0Īpparently mkvextract cannot convert subtitle format/codec, but just gives you whatever is in the Matroska file. srt because that's the filename I specified, but it's a 25MB binary file, not a plain text.