[FFmpeg-user] ffmpeg extract hdmv pgs subtitle from mkv to srt or ssa

[Carl Eugen Hoyos]

Am So., 19. Juli 2020 um 18:46 Uhr schrieb Ramon Brea <ramon.brea001 at gmail.com>:

>   Stream #0:4 -> #0:0 (hdmv_pgs_subtitle (pgssub) -> subrip (srt))
> Subtitle encoding currently only possible from text to text or bitmap to bitmap

What is unclear about this error message?

pgssub are bitmap subtitles while srt is a text format.
FFmpeg does not yet support automatic character recognition.

Carl Eugen