When I set HEVC as record output then the option to change “Data Rate” will become greyed out. Same with the Frame Interval. With H.264 it’s working fine.
Mac Studio M1 Ultra, latest macOS Ventura 13.2.1 (22D68), mimoLive Version 6.2 (29855)
Hi @Morgonaut Sorry about that. That is what sometimes happens if the feature request is too specific. It was “Add advanced settings to h.264 compression”… Easy to miss that there is an h.265 as well. I will make a new feature request. 
One more note on h.265: It seems to consume more system resources than h.264 for some reason – which is why we don’t use it that much and why we missed the need for advanced settings for h.265
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Hi Oliver, as always thanks for your efforts! I’m happy to wait for fix since I know you know about it 
Take care… Teresa
I’m testing now 6.4 and 6.5b2 and to my surprise the HEVC option for Streaming to youtube is now completely gone = totally missing. Only H.264 option is available. Am I alone or is really possible to stream H.264 only now?
Thought I would circle back to see if advanced options might be more workable with M2 & M3 Macs to get 10-Bit HEVC?
I am sorry, but this bug report somehow got lost in our database. The option to set the data rate and the keyframe interval for the HEVC (H.265) codec will be fixed in the next release. In the meantime, you can switch to H.264 encoding, change the settings for data rate and keyframe interval, and then switch back to the HEVC codec. mimoLive will use those values even if the user interface blocks you from changing them.
Regarding the 10-bit question by @TomC : Currently, the mimoLive video pipeline runs on 8-bit, so it wouldn’t make any sense to output 10-bit. This may change in the future.
I was also wondering where did the HEVC encoding option to YouTube / Live streaming went. I can also choose only H.264. Tested the latest beta 6.8.2b2 and it is still missing.
You can now change the recording settings of the HEVC file recording, thank you for fixing that! But waiting for the HEVC streaming to be back.
Hi @MulticamDude I think we never offered H.265 for RTMP since it is not part of the RTMP specification and was only recently added to the Extended RTMP specification which we’re not yet supporting. As far as I can see, we will have to make changes to RTMP to be able to support it. Ultimately, we will have to do this in order to be able to offer HDR support.