Originally posted by OneTimeShot
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Most of the raw pixel graphics processing parts (transforms/filters/motion compensation) are the same between codecs. The big differences are in the protocol encoding/decoding algorithms which is done with a programmable coprocessor.
As long as a codec doesn't add new graphics transforms you can use the same hardware. So (e.g.) MPEG-2 is just a firmware program using hardware that supports h264. AV1 and VVC will actually share a lot of hardware - the pixel stuff has been out of patent for a while now.
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