Question about Bit Depth and Colour Space
Re: Question about Bit Depth and Colour Space
Markr041 wrote:
sludge21017 wrote:
Charles Hull wrote:
sludge21017 wrote:
It looks like you are getting there. I've done lots of HDR for several years, but never had a reason to go to YouTube, so I'm interested in your experience. I've never used 10 bit H264. The usual required input for HDR TVs is 10 bit H265, although they may be starting to accept more formats anymore. In looking at YouTube's requirements, they seem to take almost any 10 bit format. I expect they convert it to H265. Prores 422 could be a good choice to send to them.
Are you using Reslove's YouTube exporter, or do you export to a file and use YouTube's importer? A good way to preview you videos is to export them to a H265 file from Resolve, and play them on your HDR TV through its USB port (with a thumb drive). To get 10bit H265 from Resolve select Main10 for the encoding profile.
Custom Export in Davinci. In youtube, I just go into Manager Videos and then Create, then Upload Videos.
My laptop is miniLED...so it handles HDR playback without any problem. (MSI Creator 17" with 2080Super).
I see Handbrake has these other formats that Youtube is saying that is compatible, namely the VP9 and H264/5 10 bit format. I saw an option for color space - so maybe this is way!
So off to handbrake now - lets see if the video converted to H264/10bit to upload and test with that. I really don't feel like uploading a 96GB file for 7 minutes of video, hopefully I can get it to a fraction of that. Might have to whip out MKVERGE to inject that metadata back. Fingers crossed.
I export hdr in h265 10bit (Main10) mov using Resolve. The default file sizes are small but the quality is fine. In Advanced you can make sure the gamut and color matrix metdata are correct (REC2020). Always works as HDR inYouTube.
The one exception I've found to "always works" when all of those are met, at least for NVIDIA hardware encoding:
If you choose constant quantizer/constant quality (I forget off the top of my head exactly which one Resolve offers for NVENC) for bitrate control, YouTube will choke on the video. It will clearly recognize it as HDR (it'll tonemap to SDR correctly), but the final HDR render will never appear, it'll often just get stuck in "processing" for days, and when it completes, won't be HDR.
VBR works fine.
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