The third problem is that video is _complicated_. What does the nal-hrd=cbr do? Well you need to understand the HRD model and (which is about 5 pages of dense s

The third problem is that video is _complicated_. What does the nal-hrd=cbr do? Well you need to understand the HRD model and (which is about 5 pages of dense specs). Ffmpeg does a great job of guessing _what_ you want. But as soon as you're outside of those guesses you need to know _a lot_ to get things working.