Heyyo, Widevine L1 was legitimate... The issue was vp9.secure and avc.secure codecs didn't work and I never saw a method to fix it, nor did anyone else help find a fix or test fixes... So I gave up on it and killed L1.I'm not on that ROM, but I would try some app that requires drm (like Vudu) and see if you can actually play hd content that is protected. Just playing Netflix, for example, doesn't really let you know as far as I am able to tell. @ThE_MarD was trying to fix drm for a long time. I once had L1 (using the same app you are using in your screenshot) on aicp Oreo but it was "fake". When I would use YouTube tv (not YouTube, but the actual tv service) or Vudu, it would crash on hd content. Only 480p content was available. Nobody was ever able to get it working and the changes had to be reverted.
Sent from my LEX727 using XDA Labs
If someone manages to find a fix for vp9.secure and avc.secure codecs? We could try again... But otherwise there's no point in me loosing time on it when there's still lots of other work that needs to be done...