This is something I’ve been trying to do reliably for years. I can stream anything I want easily with VLC or even just Chrome itself but I can’t get subs to work. I was able to make it work for a long time using a Chrome app called “videostream” but it now no longer works correctly on my system. It’s a bit confusing to me but it kind of looks from what I have read that Plex can apparently handle this? Most references to the idea seem to be for later chromecast versions but mine’s a 1st gen I bought in 2014. Could I use Plex to stream local media with separate or embedded srt files to my chromecast ?
It will work, but you may run in to issues with 1080p or higher media due to bitrate limitations in the chromecast.
I guess I never checked, but I assumed that all the other solutions I’ve been using to stream video to the Chromecast were performing a reencode on the fly to meet Chromecast spec. If so, then hopefully this must be how Plex does it too and so hopefully as long as the horsepower is there it can take whatever size or quality source I have available and feed it to.the Chromecast at the Chromecast’s best available spec. I wouldn’t swear to it but I think I’ve done that with 4k material and VLC, with the outcome would have been 1080p at the appropriate bitrate for the Chromecast.