#52 Subtitle handling

[Radbert Grimmig]

Hi,
I wish I could use Avidemux to selectively delete individual subtitle tracks.
Currently, the only workarouind is to remux the entire video without any subtitles, deleting all subtitle tracks, and then add an external subtitle file. Which you need to find first.
So a good intermediate step would be the ability to extract individual subtitle tracks from video files into subtitle files.
Ideally I'd also love to use avidemux to add individual subtitle tracks, preferably without transcoding the video if that is technically possible.