I even have the same LG TV as Rich lol. So even with next to no messing around with the HDR settings, it was clear as day Sports made the best use of HDR going.
It wasn't like with Recore, where you 1st play it in HDR it looks hideous and plain wrong, and one needs to go the options screen and HDR brightness settings ASAP.
Here's an idea of why it was difficult to produce.
I hope that we will get consumer programs capable of automating this stuff in the future.
Now that I've figured all of it out, it shouldn't be too difficult going forward but the process this time was not easy.
Some of the hoops I had to jump through.
Step 1 was getting the capture device to play nicely with my setup. After loads of issues, I finally determined that it will ONLY accept HDR using YUV422 at 4K. Anything else does not work. It also only works with very specific HDMI cables which required a lot of trial and error to test. I had to factor in the AVR as well which prefers YUV420 but only for Zone 1 - Zone 2 works fine with 422 which I could send to the capture device.
Then, while doing all this swapping and testing, I bumped the power cable on my Pro which corrupted the hard drive to the point where I had to re-initialize the entire system losing everything on it (thankfully I had cloud saves). This, of course, took a while as I had to re-download active games.
What the corruption basically did was make it so that I could no longer install games. Whether by disc or download, it would just say "An error has occurred". Very few people have searched for thee specific error code associated with it but the ones I did find basically said, yeah, you have to re-initialize.
So that ate up day 1. I managed to get some capture done in the end but the Pro being down made it so that I had to wait until day 2 to continue gathering footage.
So on day 2, I captured as much as I could (in between server downtime) and jumped over to Premiere. This is where it gets challenging. When dealing with HDR, everything in the time line must be in HDR or properly mapped to the correct color space - and keep in mind this is absolutely not as simple as pressing a button. It's not an automatic thing. Every little graphics, text or object needs to be mapped correctly and it's not obvious how to do it. Since you cannot actually preview this live (it just shows a washed out incorrect version) the only way to test the various settings was to export a clip then encode it (which eats up time). Take that clip, try to play on the OLED TV and see what happens.
All of that trial and error took a long time.
By this point, I was taking more time than was allotted for the video, so I scrambled to make something as interesting as I could in a short time.
Once it was complete, then, there's the YouTube problem - it took YT more than 40 hours to process this video. It left me wondering if it would work at all since it seemed to be stuck at 720p the entire time. During that, I experimented with other codecs and settings to try and figure out what was wrong. Turns out, it just needed a very long time.
In the end, it was a pain, but now I can do HDR videos and know all the pitfalls.
For Forza 7 vs GTS, though, I think I'm going to stick with SDR as, even knowing the HDR workflow, it's still way faster and easier to do in SDR.