Set Maximum Bitrates values based on Roku Guidelines

[ApexArray]

Changes
Set max bitrate for each codec profile according to Roku Supported video codecs

Issues
Fixes #722
Possibly fixes #401, #449, #496
Likely fixes the issues observed in #541. We could also set these limits from a user setting if desired.

[NeuroDawg]

Please don't start setting maximum bitrates based upon that Roku chart. As I mentioned in #944, this chart isn't accurate. I have no problems direct streaming (audio has to be transcoded) blu-ray remuxes from makemkv that are >20Mbps in h264 codec, using Jellyfin client on a Roku 4. I'd hate to see my files transcoded to a lower bitrate just because Jellyin thinks it can't play them.

[thegreatprophetzarquon]

Yes, these limits don't seem accurate at all. I think that has to be for older models, perhaps for the the express stick, or just potentially very conservative. On my 2019 Roku Ultra, I've had Plex stream AVC bluray remuxes with no transcoding at around 40mbps with no issue and played at least one HVEC 4K UHD remux just fine (definitely over 40mbps). I'm very sure many official apps use higher bitrates than 10mbps for h264.

I just set up a Jellyfin sever and the 10mbps bitrate limit that's hardcoded right now is a deal breaker for using the Roku app. This looks terrible for many films: certainly anything with film grain.
The option to set/remove this limit (either in the client or from the server side) is most desirable, (#541) but absent that you should remove or raise this, at least for the moment.

[thegreatprophetzarquon]

And I see #975 is giving the option to disable this, fantastic. (although I really don't think 10Mbps is a good default limit for AVC; that's not a real device limitation and should be set higher). All good, don't mind me. lol.

[ApexArray]

Wow, so sorry for the issues that this has caused.

I was indeed developing and testing on an older Roku 4200X, and the bitrate limitation was the only thing that fixed my issue. Making this a user setting is definitely the right call.