Lavf exposes programs/renditions as a flat track list tagged with
program_id. We respect this metadata and group tracks into their
respective programs, as tracks from different programs may be completely
unrelated to each other.
This commits adds an option to flatten the editions and ignore the
grouping.
Fixes: https://github.com/mpv-player/mpv/issues/17836#issuecomment-4345930205
This adds proper support for MPEG-TS programs and HLS variants. Now
program selection is exposed as editions and tracks are grouped under
such edition. If there are external tracks added, they are available in
all editions.
Kacper Michajłow