[Feature]: Subtitle support while casting

[GangySVK]

What feature do you want to add?

Hey, first of all thanks for this amazing project and the work youre doing.

I only discovered it today and I enjoy it very much, but I noticed that as soon as I start casting a movie to my TV, subtitles are not longer showing. Would it be too much work to add them to the stream in order to be able to enjoy the same quality of experience on the TV as you can inside the browser?

Thanks for your consideration.

Why do you want to have this feature?

Subtitles are in no way only for non-native english speakers, but are being widely used even by native speakers more as time passes, predominantly because the sound mixing of movies/shows is causing parts of a dialogue to be indiscernible in current era and as such, the experience of watching them can sometimes suffer considerably without subtitles displayed.

Any other details to share?

Windows 11, Brave Browser, Google Chromecast 4