similar to: Theora vs MPEG vs H264

This is a note to announce the availability of "Ogg Theorarm", an optimised ARM implementation of decoding libraries for the Theora video code, and Vorbis audio codec from xiph.org. Full details of this code release can be found at <http://www.wss.co.uk/pinknoise/theorarm>, but highlights include: * Full speed playback of a 320x240x25fps clip with a 48kHz stereo audio track on

a couple points before I look at this too hard: "For VP3, since you can't do a constant quality encode" what? that should not be the case. Could be a QT-specific bug. Theora at any rate is certainly capable of doing constant-quality encode. This probably explains your standard deviation complaint -- VP3 is running a rate control alg, where the other codecs are just shooting for

Here's the problem: > 2) Encoding with rate control as in single pass "Bitrate > control" will not > lead to better quality than fixed quant (with the right value > of the fixed > quant). Ratecontrol doens't know anything about "quality". It > will try to > reach more-or-less CBR. > > But somehow this is not a fair comparison, because

Hello! I'm trying to use ffmpeg2theora to encode raw (.yuv) files in I420 format (just frames, no headers at all), but failed to find corresponding input format. Is there any documentation of supported formats for ffmpeg2theora? Or maybe there is another command-line tool for Windows to encode raw video using Theora algorithm? Thank you for help! Alexander.

"... we need a baseline to work from - one standard format that (if all else fails) everything can fall back to. This doesn?t need to be the most complex format, or the most advertised format, or even the format with the most companies involved in its creation. All it needs to do is to be available, everywhere. The codec in the frame for this is Ogg Theora..." :)

Hiya, I have been struggling to save the result from the FOR loop. What is the best way to do it, as I need the result to merge with another dataset for further analysis ? for (dd in ((M-10):M)){ + dist<-(32-dd) + r<-1/2*(1-exp(-2*dist/100)) + map<-c(dd,round(r,4)) + print(map) + next + } Thanks. Stella ___________________________________________________________________________ This

Hi again, I have improved precision of my codec (on the encoder and decoder).I have also improved the -h1 quality setting.-Source code and binaries at http://nhwcodec.blogspot.com/-. I am still trying to improve precision of my codec, with keeping my low-complexity (fast) approach. I do not totally use the reference (and impressive) block prediction with different modes + residual coding scheme,

Dear list, I have a dataset as follow and I would like to count the frequencies for the combination of the two variables (f1 and f2) for each id. I know it is should be straight forward, but I just don't know how to do it in R. Here is the SAS code I will use to get the output I want : proc means nway; class id f1 f2; var flag output out=temp; Dataset: id f1 f2 flag 798 1 2

Hi List, Just batting a few ideas around here, but would it be possible to include in to the codec, estimation for common video artifacts that occur in the analogue world? For example, anything that's gone through a composite stage will likely have dot-crawl and false colour - if we can recognise this effect in the encoder, we can treat it as a special case. Other artifacts that come to

Dear members, I want to create a sequence of numbers for the multiple records of individual animal in my dataset. The SAS code below will do the trick, but I want to learn to do it in R. Can anyone help ? data ht&ssn; set ht&ssn; by anml_key; if first.anml_key then do; seq_ht_rslt=0; end; seq_ht_rslt+1; Thanks in advance. Stella

Great news! Theora is running on FPGA. After almost a year of a great effort we have Theora validated on FPGA. Now I will try to integrated the hardware with a video controller to see the video! I completely implemented the ExpandBlock, CopyRecon, LoopFilter and UpdateUMVBorder functions. The ReconRefFrames function was partially implemented and the part before will run on a software compiled

Hi there, We are interested in adopting Opus into our web based application for speech recording. I'm wondering if there is a plan to port Opus encoder and decoder to Javascript using Emscripten in the near future? Best Regards, Rachel Wu ETS.org ________________________________ This e-mail and any files transmitted with it may contain privileged or confidential information. It is solely

New version of ffmpeg2theora, a command line tool to convert video files to Ogg Theora. new in version 0.20 - postprocessing filters, denoise, deblock, dering (check --pp help) - new preset - several bugfixes - binaries build with latest version of libtheora Binaries http://v2v.cc/~j/ffmpeg2theora/ffmpeg2theora-0.20.linux.bin.bz2

New version of ffmpeg2theora, a command line tool to convert video files to Ogg Theora. new in version 0.20 - postprocessing filters, denoise, deblock, dering (check --pp help) - new preset - several bugfixes - binaries build with latest version of libtheora Binaries http://v2v.cc/~j/ffmpeg2theora/ffmpeg2theora-0.20.linux.bin.bz2

One thing I have noticed when encoding VCDs is that often videos with complex backgrounds don't compress nearly as well as those with simple ones. Part of the problem is that TV cameras seam to have the focus so that the entire image is clear rather than focusing on the foreground (and blurring the backgrounds). The result is that a good number of bits are wasted trying to perfectly

Hi, I did some improvements and some bug corrections in Theora FPGA code. I'd like to post this new version in the SVN. How can I do that? Thanks -- Leonardo de Paula Rosa Piga Undergraduate Computer Engineering Student LSC - IC - UNICAMP http://www.students.ic.unicamp.br/~ra033956

What is the PostProcessingLevel field of PB_INSTANCE? When is it used? It is used for all Theora's video or it is just for legacy support with VP3? Thanks -- Leonardo de Paula Rosa Piga Undergraduate Computer Engineering Student LSC - IC - UNICAMP http://www.students.ic.unicamp.br/~ra033956

Hi all, Great news. On Thursday I finally play a video on FPGA. As I said the implementation is using the NIOS II processor. Andr? Costa is hard working to use the LEON processor. The video resolution is 96x80, because we have some FPGA internal memory constraints. I will try to use external memory to make possible decode a video of at least 320x240. The result can be see here:

Hello, I took the liberty of quickly slamming together http://www.theora.org/benefits/ . This is supposed to answer the "why should you use Theora" question in some detail. This section is not yet included in the navigation bar and I'd like to get confirmation that this information can be considered "canon" before making it "visible" (oh, and of course someone

Hi all, Does Theora Community have an interest in a multi-thread decoder implementation? I'm starting to work with multi-thread and I thought that Theora Decoder is a good choice for me, because I had been working with it in a FPGA implementation and I have experience with the library. I'm thinking in working with LoopFilter at first. Do you think I could start with it or there is a