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vMix support for Intel Quick Sync hardware encoding
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Joined: 10/15/2020(UTC) Posts: 3  Location: Echternach Thanks: 2 times
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Since a few generations, Intel does build in more and more high performance video decoders and encoders in it’s CPU’s and I wonder if vMix does support them. I mean it’s great to use Nvidia hardware encoding and I use it to my upmost satisfaction on my tower workstation where there is plenty of space for a very good cooling solution. But as I’m looking to buy a new laptop and I’m reading test reviews from the new Tiger Lake Intel CPU’s, the have very powerfull H265/HEVC/VP9/AV1 hardware encoders and decoders with up to 12 bit 4:2:0, 4:2:2 and 4:4:4 without putting stress on the CPU.
I wonder how about vMix supporting those Intel hardware encoder/decoders? It would make my purchase decision very different!
Here the description from Wikipedia:
Version 5 (Skylake)
The Skylake microarchitecture adds a full fixed-function H.265/HEVC main/8-bit encoding and decoding acceleration, hybrid and partial HEVC main10/10-bit decoding acceleration, JPEG encoding acceleration for resolutions up to 16,000×16,000 pixels, and partial VP9 encoding and decoding acceleration.[11]
Version 6 (Kaby Lake, Coffee Lake, Whiskey Lake, Comet Lake)
The Kaby Lake, Coffee Lake and Comet Lake microarchitecture adds full fixed-function H.265/HEVC Main10/10-bit encoding and decoding acceleration and full fixed-function VP9 8-bit and 10-bit decoding acceleration and 8-bit encoding acceleration.[12][13]
Version 7 (Ice Lake)
The Ice Lake (microprocessor) adds VP9 4:4:4 decoding, VP9 encoding (up to 10-bit and 4:4:4), HEVC 4:2:2 and 4:4:4 decoding and encoding,[14] HDR10 Tone Mapping[15] and Open Source Media Shaders.[16] HEVC hardware encoding quality has also been improved.[17]
Version 8 (Tiger Lake, Rocket Lake)
The Tiger Lake (microprocessor) & Rocket Lake adds VP9 12-bit & 12-bit 4:4:4 hardware decoding and HEVC 12-bit 4:2:0, 4:2:2 and 4:4:4 hardware decoding.[18] Gen12 Xe will also support native AV1 decode, which includes 10-bit 4:2:0 16K stills and 10-bit 4:2:0 8K, 4K and 2K video.[19] Hardware encoding for VP8 was dropped and hardware decoding is only available on Tiger Lake.
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Rank: Advanced Member
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Joined: 7/1/2015(UTC) Posts: 1,150   Location: Houston TX Thanks: 319 times
Was thanked: 263 time(s) in 233 post(s)
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My laptop is really not well suited for large vMix projects, but I have done some smaller ones with it. It's a Lenovo X1 Carbon Gen 8. - Intel® Core™ i7-8565U (1.80GHz, up to 4.60GHz with Turbo Boost, 4 Cores, 8MB Cache)
- Windows 10 Pro 64
- 16GB LPDDR3 2133MHz (Onboard)
- 512GB Solid State Drive M.2 PCIe-NVMe, Opal
- 14.0" FHD (1920 x 1080) 400 nits, IPS, low power, anti-glare
- Integrated Intel® UHD Graphics 620
I know that I can turn on hardware encoding for the stream or record to disk and the CPU load drops. That implies that vMix does use QuickSync. I most typically use H264. Can't speak to higher bit depths or other codecs.
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 1 user thanked mjgraves for this useful post.
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Rank: Newbie
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Joined: 10/15/2020(UTC) Posts: 3 Location: Echternach Thanks: 2 times
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Thank you so much for your answer!
I just wonder, what is a smaller project for you? Would that be up to 3 or 4 HD cameras?
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