You can only compare output datartar to input if the codec is the same.
But as pointed out by others bumping up the output data rate too high will produce a file that is difficult or impossible to playback.
Hence the questions on what device will playback the file and what are it’s technical limits.
That has to be the starting point.
If that device can cope with say 200mbps you then need to decide if that data rate is needed.
Do an enode at that data rate. Then try one 200mbps lower and compare quality. Repeat going ever lower. When you see a quality drop go back up one or 2 steps.
Pat Horridge
Broadcast & Post Consultant, Trainer, Avid Certified Instructor
Free online Tutorials at VET digital media academy online https://vimeo.com/channels/752951
pat@vet.co.uk