It depends on the app you are using to watch the streams, and the developer who built it. For example I can pause, rewind, and fast forward Netflix, Plex, and more. But if I try to do that on a YouTube live stream, it won't work.
Which app in particular are you trying to control? As Ashepherdson said, the controls differ from app to app, since the app developers are in control of how the remote functions.
We haven't heard back from FaltaCZ, and it's been a few days, so I'm locking the thread. As always, feel free to make a new thread if you have any more questions or concerns.
Thank you for your help, Ashepherdson!