It’s simple, with Stream2Chromecast!
Are you searching for an easy way to stream media files from your LinuxBox to a Chromecast?
You can use Stream2chromecast, a simple Python script that makes the task of streaming media files to a Chromecast device ridiculously easy.
Simply clone the project’s GitHub repository with this command
Now, to stream a media content, start the script with this command line
The utility also supports basic playback controls through -pause, -continue and -stop options.
Only the WebVTT format is currently supported.
If you have an SRT subtitle file, you can convert it with this online tool:
To cast the subtitles on /path/to/subtitles.vtt use this command:
stream2chromecast.py -subtitles /path/to/subtitles.vtt /path/to/foo.mp4
More info and download