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Old 27th January 2002, 23:13   #1  |  Link
German doom9/Gleitz SuMo
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* Good and bad news from Germany

Hi pals,

the german computer technology magazine c't writes:

{-} LuraTech (formerly related to the german aerospace technology company), creator of wavelet image compression technology applications (LuraWave, LuraDocument, JPEG2000) is broke. Bad for us: Probably no LuraVid codec under development anymore. Does anyone know other wavelet based codecs (besides Pegasus PICVideo)?

{+} ISO and ITU-T are discussing a new compression standard called H.26L: Based on H.261 and H.263 (predecessors of MPEG), but offers motion analysis down to 1/8th pixel, 7 possible DCT square sizes down to 4x4; a variant using CABAC (an adaptive entropy coder based on arithmetic coding, better than Huffman) shall provide the same quality as MPEG-4 at half the bitrate in current tests. The standard is expected to be published around the middle of this year, and Microsoft is expected to be one of the first codec developers.
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Old 28th January 2002, 00:01   #2  |  Link
Kilted Yaksman
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Location: South Carolina
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You can check out some H.26L code here.

I don't know why they used arithmetic coding instead of range coding, I guess they like patent issues. And I can't wait to see the kind of cpu you'll need to play / encode at dvd resolutions.. they've really pulled out all the stops.

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Old 28th January 2002, 00:19   #3  |  Link
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From the Xvid forum:

Many of you probably already know this, but just in case. The H.26L (now to be MPEG-4 TBD Profile) working draft is available at:


Quite readable compared to the MPEG-4 specs

The reference software is also available (and quite unencumbered) at:

"Only those who attempt the absurd achieve the impossible."
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