VideoCast is an amazing feature you added, but some Improvements can be done :) for example :
- add support to other videofile, like .mkv
- the ability to change language of videofiles/movies, and adding subtitles or changing them (if they are already present in the file)
- see attached files

thumbs up! for these features and add votes on this to: https://neatbytes.uservoice.com/forums/274528-solid-explorer-2-0/suggestions/10335894-subtitles-in-video-cast-plugin