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Friday, May 21, 2010

VP8 WebM για τους τεμπέληδες

VP8, as a spec, should be a bit better than H.264 Baseline Profile and VC-1. It’s not even close to competitive with H.264 Main or High Profile. If Google is willing to revise the spec, this can probably be improved.

VP8, as an encoder, is somewhere between Xvid and Microsoft’s VC-1 in terms of visual quality. This can definitely be improved a lot, but not via conventional means.

VP8, as a decoder, decodes even slower than ffmpeg’s H.264. This probably can’t be improved that much.

With regard to patents, VP8 copies way too much from H.264 for anyone sane to be comfortable with it, no matter whose word is behind the claim of being patent-free.

VP8 is definitely better compression-wise than Theora and Dirac, so if its claim to being patent-free does stand up, it’s an upgrade with regard to patent-free video formats.

VP8 is not ready for prime-time; the spec is a pile of copy-pasted C code and the encoder’s interface is lacking in features and buggy. They aren’t even ready to finalize the bitstream format, let alone switch the world over to VP8.

With the lack of a real spec, the VP8 software basically is the spec–and with the spec being “final”, any bugs are now set in stone. Such bugs have already been found and Google has rejected fixes

Google made the right decision to pick Matroska and Vorbis for its HTML5 video proposal.

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Όχι τίποτα άλλο αλλά πήδησε στην παραπάνω ανάλυση και ο Steve Jobs που αν μη τι άλλο ΣΙΓΟΥΡΑ κάτι ξέρει παραπάνω από εμένα. Διαβάστε παρακάτω:

In reply to a email asking his thoughts on Google's announcement of the royalty-free WebM video codec, Steve Jobs reportedly simply forwarded back the critical expose profiled yesterday by AppleInsider.

Jobs' terse reply to the question "What did you make of the recent VP8 announcement?" left little doubt about Apple's views on the matter, because the linked report Jobs returned, written by x264 developer Jason Garrett-Glaser, castigated the new specification for video compression as being weak, incomplete, and undoubtedly encumbered by patent issues.

Note that x264 is an open source project for encoding H.264 compliant video. It has no inherent bias in promoting the H.264 specification over VP8. Garrett-Glaser has been a vocal critic of elements of the MPEG standards process, the x264 project itself is an effort to get around commercial licensing of MPEG's technologies, and the similarities between VP8 and H.264 mean that x264 could likely be adapted to encode VP8 as well.

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Μπαρούτι μυρίζομαι. Μόλις άναψε! Η συνέχεια επί της οθόνης σας...

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