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Long to render
Hello guys,
Da Vinci takes about 1 hour to render a 4 minutes 4K video (from H265 to Quicktime H265), I wonder if I’m doing something wrong as you can guess it’s quite driving me crazy.
Thank you if you have any hints 🙂
Jean
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3 Replies
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Hey Jean,
I have found in the past that going from one H265 format to another H265, can be painfully slow, or not happen at all.
I suspect that some exporters “unpack” the H265 to an interim uncompressed format, before compressing back to a new version of H265.
Which makes sense, as going from one highly compressed format to another might just make it look worse.
If you have the space, maybe export out to ProRes 4444 or similar, before compressing to QuickTime H265.
Hopefully, it will be faster + you should retain the high quality.
I am sure that there might be a better scientific description, and there are smarter people around here that can explain it.
Atb
Mads
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Personally I wouldn’t use Quicktime as a wrapper. Try going to .mp4
In general though, render speeds have so many variables it’s always hard to pin point but as general rules I find it faster to render to a different drive than the project media drive. Are your drives full? If so they might be making everything run slow, especially if you don’t have plenty of RAM.
Drive speed matters as does GPU power and VRAM depending on pixel aspect. Of course grading processing, denoising etc all take render time so maybe there is so heavy duty processing going on.
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Thank you both 🙂
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