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AMD Posts Linux Driver Patches For New "VCN 4.0" IP Block

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  • AMD Posts Linux Driver Patches For New "VCN 4.0" IP Block

    Phoronix: AMD Posts Linux Driver Patches For New "VCN 4.0" IP Block

    After last week AMD began posting the "GFX11" patches for RDNA3, today AMD published a set of patches enabling the VCN 4.0 IP block for next-generation video encode/decode capabilities...

    https://www.phoronix.com/scan.php?pa...CN-4.0-Patches

  • #2
    Let's hope this finally has improved encoding quality, doesn't cripple any of the other codecs to make room for AV1, and adds 4:4:4 encode...

    ...otherwise Intel will put AMD to shame...

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    • #3
      Well, I hope this time they really increase the limits to 8K, 4K @ 120 FPS or more.
      HDR support too, with an API that allows video players or media centers to send HDR metadata of videos to the connected monitors / TVs over both DisplayPort and HDMI.
      Come on AMD this works with your GPUs even on Windows 7 (with MPC-HC+MadVr) and on Linux still nothing.

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      • #4
        Originally posted by Danny3 View Post
        HDR support too, with an API that allows video players or media centers to send HDR metadata of videos to the connected monitors / TVs over both DisplayPort and HDMI.
        Come on AMD this works with your GPUs even on Windows 7 (with MPC-HC+MadVr) and on Linux still nothing.
        Support for HDR in the KMS API and in desktop environments is still in very active discussions regardless of vendor. There are a number of in progress RFCs. All of that needs to be nailed down before an application can take advantage of HDR. It works on windows because MS provides a spec and framework for vendors and applications to tie into.
        Last edited by agd5f; 02 May 2022, 03:53 PM.

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        • #5
          >The AV1 decode is limited to 8K and lower.

          The AV1 format doesn't support more than 8K, at least with any currently defined level.

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          • #6
            Originally posted by LinAGKar View Post
            >The AV1 decode is limited to 8K and lower.

            The AV1 format doesn't support more than 8K, at least with any currently defined level.
            That is a weird line and I came here to talk about it. Wow, what a limit, and specifying frame rate, color space, bits per channel, etc. would be nice to know. But it has always been hard to find information about VCN.

            I know that H.266 defines 16K support, and AV1 level 6.3 is 8K 120 FPS. Does AV1 even need to explicitly define a level to allow for higher resolutions? 16K AVIF is possible.

            Whatever the case, almost nobody needs 16K and it will probably be in AV2.

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            • #7
              Originally posted by jaxa View Post
              I know that H.266 defines 16K support, and AV1 level 6.3 is 8K 120 FPS. Does AV1 even need to explicitly define a level to allow for higher resolutions? 16K AVIF is possible.
              The encoder is capable of frame sizes from 8 x 8 pixels to 65535 x 65535, its just not defined in a "level" but if needed a new level is easily added.

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              • #8
                "IP block" I guess they don't mean internet protocol addresses?

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                • #9
                  Originally posted by Hafting View Post
                  "IP block" I guess they don't mean internet protocol addresses?
                  Wikipedia: Semiconductor intellectual property core (also known as IP core, or IP block)

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