HTML tags in SRT files produced by ffmpeg What I do:
$ ffmpeg -i a.mkv -c:s srt b.srt

The resulting file contains HTML tags, is there a way to avoid that?
On a side note, where can I find the list of... what do they call it... encoders? I simply tried srt for the name and it worked.
Instead of srt try to use text:
$ ffmpeg -i a.mkv -c:s text b.srt

(source)
For a list of all codecs use:
ffmpeg -encoders

You can check the documentation for more options.