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> the video encode and decode blocks were on an entirely different piece of silicon from the GPU.

As far as I understand this is not true. It's a different engine within the graphics device, and it shares the execution units.

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For Meteor Lake, Intel provided slides to the press that clearly labeled media blocks on the SoC tile, not the GPU tile. The hardware encode and decode also definitely does not use the shader execution units.

AFAIK the video encode/decode pipeline is separate from the graphics pipeline. But they do reside on the graphics tile.

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