A simple test to see how a 4K HDR Prores4444 upload of a grade looks on Youtube. It's a bit ludicrous to upload that large a format here, but since Youtube supports it and it has more reach than Vimeo, we're gonna try it. I'm also testing uploading an SDR transform LUT alongside it to ensure the SDR render looks the way I expect. This mostly for my own A/B testing, but you'll be able to observe whether or not the grain shows through the compression or not. Ideally, Youtube should get a better final render out of the Prores master, especially since it allocates more bandwidth to HDR signals.
Let's cross our fingers.
