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Theora 1.1 Thusnelda Is Released

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  • phoronix
    started a topic Theora 1.1 Thusnelda Is Released

    Theora 1.1 Thusnelda Is Released

    Phoronix: Theora 1.1 Thusnelda Is Released

    Theora, the open and royalty-free format that comes from the same folks that work on the Ogg audio formmat, has officially reached version 1.1. Theora 1.1 (codenamed "Thusnelda") is much-improved over version 1.0, which was reached last November. Some of the improvements in the Theora 1.1 encoder include rate-distortion optimization, better motion search, adaptive quantization, a real rate-control module, support for 4:2:2 and 4:4:4 video, and many more changes. A description of the major changes in Theora Thusnelda along with source download links to libtheora 1.1 are available from the Xiph.org mailing list...

    http://www.phoronix.com/vr.php?view=NzU2Mg

  • SavageX
    replied
    Originally posted by Kano View Post
    Did anybody notice that there possible more bluray out there with VC1 and not H264? Using Theora is nice, but as long as there is no hw accelleration available it is pretty much useless for 1080p - when you want to be able to play it with a slower system with a cheap gfx card.

    Actually Theora is decoding 1080p on a normal machine with like 2 GHz in realtime with an ASM-enabled reference-decoder - it's pretty lightweight. Even the Java decoder (nearly) pulls 720p on my machine, and I haven't really searched for hot spots yet ;-)

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  • SavageX
    replied
    Originally posted by Yfrwlf View Post
    Or make a version 2 or call it something different, instead of sitting around waiting. Why let H264 take the high bitrate best codec crown?
    Because for high-bitrate high-resolution Dirac has promise and currently development for Theora is best targeted at being good at where it's most useful: Web video. Xiph.org won't be sitting around doing nothing.

    Leave a comment:


  • Kano
    replied
    Did anybody notice that there possible more bluray out there with VC1 and not H264? Using Theora is nice, but as long as there is no hw accelleration available it is pretty much useless for 1080p - when you want to be able to play it with a slower system with a cheap gfx card.

    Leave a comment:


  • Yfrwlf
    replied
    Originally posted by SavageX View Post
    It would be a pretty small (but incompatible) change to solve that problem, but currently it seems most wise to keep compatible with the current bitstream (millions of deployments, plays just fine without giving users a headache) and see what e.g. Google will do with On2 (open-source VP6 or VP7?), to see if Sun's OMS video codec will actually be released and to see how Dirac develops.
    Or make a version 2 or call it something different, instead of sitting around waiting. Why let H264 take the high bitrate best codec crown?

    Leave a comment:


  • SavageX
    replied
    Originally posted by Yfrwlf View Post
    Any way, if a new version of Theora could be written that was for higher resolutions, without the barrier it currently has, without rewriting the whole entire thing and basically creating a whole new codec, that would be cool.
    It would be a pretty small (but incompatible) change to solve that problem, but currently it seems most wise to keep compatible with the current bitstream (millions of deployments, plays just fine without giving users a headache) and see what e.g. Google will do with On2 (open-source VP6 or VP7?), to see if Sun's OMS video codec will actually be released and to see how Dirac develops.
    Last edited by SavageX; 09-28-2009, 10:20 AM.

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  • Yfrwlf
    replied
    Originally posted by L33F3R View Post
    Hell they can offer 1080p or god knows what, just as long as the other options are on the table. But on youtubes side, thats alot of bandwidth to be supported by google ads. Not to mention increased disk space and server cpu usage.
    You mean server I/O, decompression is client-side. :P

    Any way, if a new version of Theora could be written that was for higher resolutions, without the barrier it currently has, without rewriting the whole entire thing and basically creating a whole new codec, that would be cool. Otherwise I guess Dirac or something else will have to be the future for higher resolution movies.

    Leave a comment:


  • L33F3R
    replied
    Hell they can offer 1080p or god knows what, just as long as the other options are on the table. But on youtubes side, thats alot of bandwidth to be supported by google ads. Not to mention increased disk space and server cpu usage.

    Leave a comment:


  • Remco
    replied
    Originally posted by RealNC View Post
    The only thing to consider, IMO, is what YouTube does: offering both 480p and 720p versions of the same video. Everyone's happy that way.
    Note that 720p is usually still acceptable for Theora. On the Theora mailinglist, it was calculated that panning faster than 465 pixels per second would get you into trouble. When you hit that limit the quality has to be reduced, resulting in lots of blockiness. Luckily, most material is talking heads (that's what Youtube is for, mostly).

    Leave a comment:


  • RealNC
    replied
    The only thing to consider, IMO, is what YouTube does: offering both 480p and 720p versions of the same video. Everyone's happy that way.

    Leave a comment:

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