Great writeup, thanks for going to the effort of finishing up a thread, not enough people do that.
Unfortunately I can’t share the production code because of (bullshit) reasons, but I have dug up the test code from when i was evaluating video options earlier on. It’s very similar to the end result, minus a few conveniences (automatic init, update, shutdown etc) and a lot of tidy up, but should be enough for you to test with.