One big practical difference versus HEVC seems to be the lack of any equivalent to Wavefront Parallel Processing. If I'm parsing that right, that'll make it hard to do performant multithreaded software decoders. Exacerbated by the lack of B-frames to allow for frame-level parallelism where non-reference frame get decoded in separate threads.
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Ben Waggoner
Principal Video Specialist, Amazon Prime Video
My Compression Book
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