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I remember the BBC's Dirac codec uses wavelets. i don't know how it performs today, no one has adopted it.
by antninja 13y ago
I remember the BBC's Dirac codec uses wavelets. i don't know how it performs today, no one has adopted it.
- joezydeco 13y agoIt's been 10 years since the Apple/Pixar wavelet compression was announced. Whatever happened to that one?
- wmf 13y agoPixlet was an intraframe intermediate codec (a predecessor to ProRes), not a delivery codec.
- klodolph 13y agoYes, and the lesson from Dirac was that wavelets are cool, but they have some serious problems which must be overcome before they can be used in a complete codec. The consensus was that intra-frame prediction is very important, and it's relatively easy to do intra-frame prediction if you can predict the content of one discrete block based on blocks that appeared earlier in the stream. It's hard to do intra-frame prediction with wavelets, since they don't divide into blocks.