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Shows that as the MCU increases, the OpenMP extra overhead is amortized and OpenMP becomes as fast as the pthreads implementation. The last chart http://lampiao.lsc.ic.unicamp.br/~piga/gsoc_2008/systime.png Shows that both pthreads and OpenMP overhead decreases as what seems to be a logarithmic function of the MCU size. This was a great experiment, and from what I can conclude, the OpenMP implementation can be as good as the pthread. Therefore maybe it...

...cpu time but they are called too many times. The time spent to create and synchronize threads is greater than the speed up gains. We need functions that are called a few times and spend many cpu time. Also data dependency should be the lowest as possible. According to the model that i did ( http://lampiao.lsc.ic.unicamp.br/~piga/gsoc_2008/implementation.pdf<http://lampiao.lsc.ic.unicamp.br/%7Epiga/gsoc_2008/implementation.pdf>) the decoding time should be reduced in 33%, but it was just 10% for pthread an 5% for openMP. I used a video with 1440x1080. The pthread implementation has 3 threads a...

...pipelined implementation of these functions: (c_dec_dc_unpredict_mcu_plane + oc_dec_frags_recon_mcu_plane) and (oc_state_loop_filter_frag_rows + oc_state_borders_fill_rows) as explained in my previous email. But the results were not good. They were equal the implementation without pipeline. http://lampiao.lsc.ic.unicamp.br/~piga/gsoc_2008/comparison.png http://lampiao.lsc.ic.unicamp.br/~piga/gsoc_2008/speedup.png http://lampiao.lsc.ic.unicamp.br/~piga/gsoc_2008/systime.png Next I tried to do some improvements, but without success. I think that the implementation as it is, could not be improved mor...

Hello I would like to ask if it's possible to display Theora logo at http://ronja.twibright.com/sw.php I use Theora for automatically generated videos at http://ronja.twibright.com/3d/ If yes can I please have the master of the logo? I cannot use the small logo you have on the website. Thanks, Karel Kulhavy

I have tried to add a plunging to the "libtheora-1.0beta2" (network bandwidth measuring component was added) and Got it success for some far now the problem is when it is added the encoding process get extremely slow (around 20 seconds delay). I think that the problem is with my modified Makefile (some flag may have missed). the following is my modified Makefile.am which is in the

Are there any academic papers that promote theora? I know of one, are there more? Universal Multimedia Access and Open Standards <http://www.t4p.no/t4p.no/conference/media/Vaaler.pdf> tom_a_sparks Please avoid sending me Word or PowerPoint attachments. but instead use OpenDocument File Formats or use OpenOffice http://en.wikipedia.org/wiki/OpenDocument

Is there a way to use multi-threading with ffmpeg2theora? Pretty much any type i'm ok with, including multi-threaded theora encoding or multi-threaded ffmpeg decoding, or using half of my cpu cores on ffmpeg decoding and the other half on theora encoding. Is there a way to do multithreaded thoera encoding? -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi list, I just came across this site: http://web.mit.edu/xiphmont/Public/theora/demo.html I was wondering are these issues being addressed or will be addressed before the 1.0 release? Theora is like the only open sourced free code people can use, i will be nice if it performs close to other libs. please keep up the good work! -------------- next part -------------- An HTML attachment was

Hi, Is somewhere alghorithm description of encoder process implemented in libtheora? May be some drafts? May be frame dataflow throw encoder stages? PLEASE -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/theora/attachments/20110318/c3e8e109/attachment.htm