I have used that Gentoo Chromium on a bunch of different video sites.
Here are some examples I can think of:
- to stream live webcast and prerecorded webcasts through a Continuing Legal Ed provider, using their (proprietary?) web app.
- Vimeo.
- NFL.com but not live streamed any games.
- some of the 2018 Winter Olympics, including live stream.
- videos but no live stream on the Premier League and Bundesliga websites.
- Twitch, both live and recorded
However, I have never tried Netflix or Hulu or any other pay provider.
I'm sure I've watched videos on other sites that I'm not thinking of right now, like BBC, etc.
I have never had any other issues, but I only use Chromium for a few things, like expressly watching videos, and using a few specific websites. Otherwise, I use Firefox and FF Nightly as my main browsers, for almost everything except watching videos and streams and also anything with audio. For all that stuff, I have had nothing but great experiences with Chromium.
> I have never tried Netflix or Hulu or any other pay provider.
... except YouTube Red/subscription and Amazon Prime Video, which are obviously both pay-fors, but I mentioned those in the previous comment so I neglected to include them in the list above.
Both of those have worked perfectly well in Chromium on my Gentoo install.