GPU acceleration and H264

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Andreas56

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  • Joined: Sat Apr 04, 2020 7:29 am
  • Real Name: Andreas Schrödinger

GPU acceleration and H264

PostMon Mar 15, 2021 3:47 pm

Hello everyone.

I've read the document with the supported codec list: https://documents.blackmagicdesign.com/ ... c_List.pdf
because I am thinking about an upgrade to Studio. One of the main reasons is the lack of support for H264 in the free version of Resolve under Linux.

Now, I have an AMD graphics card and currently use Resolve Free under Windows 10. H264 encoding is quite fast, so I assumed it is using the GPU already, but the document says it does not. Does the document refer to GPU acceleration in general or to GPU acceleration with multiple GPUs? I know that multiple GPUs always require the Studio version. Sorry if my assumption is dumb - I recently upgraded from an old laptop to a proper PC so maybe I am just surprised by the power of my new CPU.

So, question: Will encoding and decoding H264 under Windows be faster with an AMD card when I go from Free to Studio (assuming my GPU is faster than my CPU)?

And does any version of Resolve use GPU acceleration (one GPU) under Linux for H264 on AMD cards?

Thank you.
Davinci Resolve 17.1 on Windows 10 and Linux - AMD Radeon RX 570 8 GB - AMD Ryzen 5 3600 x6
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Peter Chamberlain

Blackmagic Design

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Re: GPU acceleration and H264

PostFri Mar 19, 2021 7:38 am

moved to resolve forum
DaVinci Resolve Product Manager
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smunaut

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  • Joined: Sat Jan 30, 2021 6:15 pm
  • Real Name: Sylvain Munaut

Re: GPU acceleration and H264

PostFri Mar 19, 2021 1:26 pm

On linux, with an AMD card, you don't get h264 encoding at all.
Resolve Studio - Ryzen 5800X3D - AMD RX6600 / NVidia RTX 4070 (switching between the 2) - Linux

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