Supported subtitle formats and file extensions

[porg]

I'm one of those willing to contribute, but not capable enough handling your mpv.io website building environment, hence my contribution here.

• This is the fulfillment of https://github.com/mpv-player/mpv/issues/11934

Section: https://mpv.io/manual/master/#subtitles

Gets this additional chapter, or possible integrated into the "Notes" section at the beginning.

Supported subtitle formats and file extensions

• mpv supports exactly the same subtitle file formats that ffmpeg supports → See ffmpeg documentation → Support matrix Subtitle-Formats → "Decoding" column → Compatibility symbol/remark.

• If you use --sub-auto with option exact or fuzzy or all then mpv looks for matching files which in addition also have one of the supported "autoload" file extensions as defined in external_files.c → sub_exts -- which as of 2023-08-10 are:

  utf, utf8, utf-8, idx, sub, srt, rt, ssa, ass, mks, vtt, sup, scc, smi, lrc, pgs and NULL (that is a file without any extension)

[sfan5]

Documentation changes can be contributed in the mpv repo under this folder: https://github.com/mpv-player/mpv/tree/master/DOCS/man It's just RST and nothing fancy :)

[porg]

• I submitted it via https://github.com/mpv-player/mpv/pull/12126
• Did to the best of my knowledge and abilities. If it has any syntax mistakes or editorial mistakes, please correct them.