Comments on: Dirac news http://www.schleef.org/blog/2008/07/15/dirac-news/ Just another WordPress weblog Sat, 22 Nov 2008 10:13:19 +0000 http://wordpress.org/?v=2.2.2 By: pup http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1112 pup Sun, 21 Sep 2008 21:55:54 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1112 now that we have a somewhat working dirac 1 release, is anyone actively working to refactor it to optimise for SIMD (SSE, AltiVec...) use to get FAR more speed out of it from generic CPUs untapped capabilitys? the theoretical benefit of vectorization is huge: with SSE, computations of floats can become 4x faster, and more in certain cases. Altivec PPC speeds being even far greater even that for a given Mhz if the freevec benchmarks are anything close to general improvements, take a look, very impressive. LibFreeVec PPC/Altivec http://www.freevec.org/ Eigen2 http://bjacob.livejournal.com/6600.html now that we have a somewhat working dirac 1 release, is anyone actively working to refactor it to optimise for SIMD (SSE, AltiVec…) use to get FAR more speed out of it from generic CPUs untapped capabilitys?

the theoretical benefit of vectorization is huge: with SSE, computations of floats can become 4x faster, and more in certain cases.

Altivec PPC speeds being even far greater even that for a given Mhz if the freevec benchmarks are anything close to general improvements, take a look, very impressive.

LibFreeVec PPC/Altivec
http://www.freevec.org/

Eigen2
http://bjacob.livejournal.com/6600.html

]]> By: Filippo Argiolas - Final SoC Report - screencasts, screencasts.. screencasts! http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1076 Filippo Argiolas - Final SoC Report - screencasts, screencasts.. screencasts! Wed, 20 Aug 2008 12:10:50 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1076 [...] for a while but, needless to say I don’t like blogging :P, I was really busy with the merge. Julien Isorce, another gstreamer developer, was working on his own branch of gstreamer-gl since [...] […] for a while but, needless to say I don’t like blogging :P, I was really busy with the merge. Julien Isorce, another gstreamer developer, was working on his own branch of gstreamer-gl since […]

]]> By: Caroliano http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1062 Caroliano Mon, 04 Aug 2008 14:24:13 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1062 It is not OGM. OGM was a hack to permit any VFW codecs in ogg. Dirac and Theora use their own especification to be correctly embebed in ogg. Still, I preffer matroska. AFAIK, much lower overhead, more formats suported (especialy important for subtitles), etc. It is too much to list. Looking foward to something easily testable in windows. It is not OGM. OGM was a hack to permit any VFW codecs in ogg. Dirac and Theora use their own especification to be correctly embebed in ogg.

Still, I preffer matroska. AFAIK, much lower overhead, more formats suported (especialy important for subtitles), etc. It is too much to list.

Looking foward to something easily testable in windows.

]]> By: Recent URLs tagged Cheese - Urlrecorder http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1061 Recent URLs tagged Cheese - Urlrecorder Sun, 03 Aug 2008 16:00:10 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1061 [...] recorded first by mcommercial on 2008-07-27→ David Schleef: Dirac news [...] […] recorded first by mcommercial on 2008-07-27→ David Schleef: Dirac news […]

]]> By: windlass http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1050 windlass Sat, 26 Jul 2008 01:03:23 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1050 Hi there, I've been researching Dirac / Schroedinger today; I'm weirdly obsessed with the idea of using Dirac for my intermediate codec in FCP. In the last hour or so I've been running some tests with my Canon HV30 and JES Deinterlacer, doing simple comparisons between ProRes 422 and Dirac. I'm happy to say that Dirac (thanks to your SchroQT plugin) is having a laugh at ProRes. However, as you mentioned on the Dirac Wiki, playback is a significant problem and makes the codec impossible to work with at the moment. A smattering of my results are here: http://blog.windlassfilms.com/ I can't wait to see it in action! Hi there,

I’ve been researching Dirac / Schroedinger today; I’m weirdly obsessed with the idea of using Dirac for my intermediate codec in FCP. In the last hour or so I’ve been running some tests with my Canon HV30 and JES Deinterlacer, doing simple comparisons between ProRes 422 and Dirac. I’m happy to say that Dirac (thanks to your SchroQT plugin) is having a laugh at ProRes. However, as you mentioned on the Dirac Wiki, playback is a significant problem and makes the codec impossible to work with at the moment. A smattering of my results are here: http://blog.windlassfilms.com/

I can’t wait to see it in action!

]]> By: Chaz6 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1048 Chaz6 Mon, 21 Jul 2008 14:45:18 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1048 Bring back Test Card F! I would really like to see a directshow filter capable of encoding and decoding raw Dirac streams. I am curious as to why OGM was chosen as the container format over Matroska, since OGM was based on a hack and Matroska was designed from the ground up. Bring back Test Card F!

I would really like to see a directshow filter capable of encoding and decoding raw Dirac streams.

I am curious as to why OGM was chosen as the container format over Matroska, since OGM was based on a hack and Matroska was designed from the ground up.

]]> By: Joseph http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1046 Joseph Thu, 17 Jul 2008 14:25:34 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1046 I'm with those calling "awesome". Looking forward to a very worthy Free format. I’m with those calling “awesome”.

Looking forward to a very worthy Free format.

]]> By: fraggle http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1042 fraggle Wed, 16 Jul 2008 09:11:34 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1042 Dirac is a BBC project, right? Surely you should be showing Test Card F. Dirac is a BBC project, right? Surely you should be showing Test Card F.

]]> By: dré http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1041 dré Wed, 16 Jul 2008 07:38:04 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1041 some nice projects! direct links would've been cool though... some nice projects! direct links would’ve been cool though…

]]> By: Frank http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1040 Frank Wed, 16 Jul 2008 04:19:34 +0000 http://www.schleef.org/blog/2008/07/15/dirac-news/#comment-1040 In one word: Awesome! Thanks, Frank In one word: Awesome!

Thanks,
Frank

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