[vladvasiliu]

I wonder if something like this (without the OSS part) doesn't already exist. Some cinemas in France have some kind of app for people who are either hearing or visually impaired which allows them to follow the movie.

I've never seen in action and don't know how it works, but at least for the audio part it should be able to synchronize the phone with the cinema screen.

If I'm not mistaken, it's provided by this company: https://www.twavox.com/en/

[sokka_h2otribe]

Roku sticks allow this for t.v watching, via the Roku app. No idea how well it works for audio or more latency sensitive applications.