"Open File" should be a possible choice in the subtitle track drop-downs in the subtitle track selector

[killergerbah]

This would make it possible to use different files as different subtitle tracks. The only way to do this right now is to drag-and-drop multiple files. When using the track selector dialog, it is only possible to load one file.

[xpire]

I'm thinking about the implementation for this, if we did allow uploading subtitles in the track dropdowns, would we still allow multi-file uploads? if so, we would need to maintain multiple functions to handle either case.

Also it seems like subtitle uploads need to be passed to the BE so the file can be parsed, I'm wondering if this could be a chance to refactor how files are parsed, maybe uploading files could be changed to not immediately close the Dialogue, and instead keep it open so users can select which subtitle (the built-in ones from the video, and the ones you just uploaded) should be the first, second, etc. Then onConfirm could be changed to handle already parsed subtitles and file-uploaded subtitles.