NOTES
- Higher bitrate isn't always better: 9250Kbps vs 5121Kbps
The film is already highly compressible with excellent QP and no grain.
- Documentary is mostly dialogues, so AC3 instead of DTS seemed
a good decision to get more video bitrate.
- Proper crop with fixed top/bottom pixels using overlay method,
spline36resize(1280,548,0,129,0,-129) giving OAR.