Add "Choose subtitle" button

[haashemi]

Feature description

Is your feature request related to a problem? If yes, please describe.

Most of the time, the video file we're going to watch doesn't have our own language's subtitle embedded (or it isn't good enough, at least with my language), so we'd like to add our own subtitle file from somewhere else.

Describe the feature you'd like

I'd like to have a "Choose subtitle" button somewhere in the player that accepts a URL to the subtitle or a file from the client's local storage.

Something like this:

Describe alternatives you've considered

Alternately, this "choose subtitle" button could be an "Add Subtitle" button somewhere before playing the video that (maybe?) adds the subtitle in its metadata folder. for example, somewhere like here:

Also, another way would be to load the video file's near .ass or .srt files.

ali@haashemi /v/w/storage> ls
'[SubsPlease] Dead Dead Demons Dededede Destruction - 06 (1080p) [44A567EE].mkv'
'[SubsPlease] Dead Dead Demons Dededede Destruction - 06 (1080p) [44A567EE].ass' # or 'Dead Dead Demons Dededede Destruction - 06.ass'

[zoriya]

I don't want to have an "Add subtitle" button since the media library is read-only, but a "Choose subtitle" would be nice.

Finding subtitles files with just a different name is already tracked by: #253. The logic/code change needed for this to work will also be needed for #542, so I plan to do it in the following weeks!

[haashemi]

Thanks! I appreciate your hard works. <3

[zoriya]

Unreleated but the anime name is kinda funny. I'll watch first ep to see what it's about