similar to: Question about converting VP3 to Ogg Theora

I found out about vp3 from the new winamp and coincidentally i also happen to be trying to find a suitable solution to broadband streaming. I have used flaskmpeg to create a 17mb .avi file from an 82mb Mpeg 1 file and it looks great it took about twenty minutes to encode. It runs for eight minutes and the audio is also fantastic using the lame encoder. However when I try to do the same in

some of you may find this helpful: I've uploaded a short (5 second) raw clip in yuv4mpeg format, associated audio, and batch files to exercise the encoder & decoder examples. In addition I've included the file as compressed (test.ogg), and a longer version as well to test playback sync. Notes: to use MPlayer with the -vo yuv4mpeg option, you need to get the latest release and compile

Hi, Is there anything special I need to know about VP3's IDCT? I mean besides the fact that there are separate IDCTs to handle sparse coefficient matrices. Are the IDCT functions mathematically equivalent to any textbook IDCT functions? Thanks... -- -Mike Melanson --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To

--- Stephane wrote: VP3 codec uses a lot of CPU for decoding. We will need some optimization because now this codec is way too slow for home uses. --- end of quote --- Actually, the Windows VP3 QuickTime codec runs just fine on a 400MHz Pentium II box, with only occasional glitches on some dodgy Celeron systems. At work, we routinely test 320x240 full-color, full-motion video on low-end boxes.

The vp3 / theora decoder in FFmpeg project received a major speedup: http://multimedia.cx/eggs/profiling-and-optimizing-theora/#comment-150751 http://git.ffmpeg.org/?p=ffmpeg;a=commit;h=6e8061980c9a18a0eb9802f5dc5becc349066680 http://git.ffmpeg.org/?p=ffmpeg;a=commit;h=8476744ba50d26a3e188def192cd9086b0f781d7 http://git.ffmpeg.org/?p=ffmpeg;a=commit;h=a51faef9b61bd80499a28322802ef4b22be44d43

Hi, So it took a little while to get here but VP3 through ffmpeg is finally starting to achieve viewable results. It partially works right now. Keyframes only. And monochrome. Oh, and the picture is upside down (something I did not realize about VP3 until I let it fly just now). Anyway, here is a picture of ffmpeg's VP3 decoder in action using xine:

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

How does the Theora project differ from Nullsofts NSV project? Other than the obvious fact they use mp3.... <p><p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'theora-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is

Hi DVD-Quality playback uses 100% CPU on my Athlon 1333 MHz. My Duron 800 can't play them. XviD uses ~25%. Does someone have few tricks for that? Stéphane Bérubé ---- sirber@webernic.com --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'theora-request@xiph.org' containing

Hi Guys, I have been using the VP3 codec for the last few months to encode a single feed from a video camera. I now need to compress multiple camera feeds simultaneously using the VP3 codec (for Windows). Does anyone know if the codec would support multiple feed compression (i.e. get the inter/intra frame compression per feed right), or if I would need to make some changes? Regards Oliver ---

Hi, I have been on a documentation kick recently. I finally updated my VP3 format document tonight: http://www.pcisys.net/~melanson/codecs/vp3-format.txt v0.2: October 9, 2003 - expanded section "Reversing the DC Prediction" - added Appendix B: Theora Differences Feel free to look it over and point out any glaring mistakes. I can't wait to see how much sense it makes to

Hi, Since a number of people are eager to try out the native VP3 decoder in xine, I have made a patch available, bz2-compressed: http://www.pcisys.net/~melanson/codecs/xine-vp3-decoder-patch.bz2 To work with this patch: 1) Get the latest xine-lib from CVS. Visit this page for more details: http://sourceforge.net/cvs/?group_id=9655 The module name is xine-lib, but you will also need

--- Daniel B. Miller wrote: Please, anyone who is working with VP3 codecs, get the new build as soon as possible. It's available through the normal cvs server at xiph. see: http://www.theora.org/cvs.html take the latest build, 3.2.6.1 --- end of quote --- I've run down through all of our QuickTime 6 bugs, and the VP3 source code in CVS appears to have a clean bill of health. If

What's the current status of VP3/Ogg integration? The CVS doesn't seem to be very active - and (maybe I'm not looking hard enough) I don't see any ogg-specific stuff here. I'm one of around 30 global techs for Indymedia, one of the last things we need for full adoption of free media formats is a free video format. We're working hard to promote Vorbis, many of the local

Hi, I am making good progress on understanding, documenting, and re-implementing VP3. I have found some more deadwood in the decoder code and I just wanted to verify that it really has no place: * Version 3.3 tables: There are 2 sets of VLCs: One for v3.1 and one for v3.3. The v3.1 set is always selected. Are the v3.3 tables in production, or will they ever be? * DC Search Points: VP3

Oliver -- Your question was asked & answered on the theora@xiph.org list -- see my post: <p>-----Original Message----- From: Oliver Darvall [mailto:oliver@cura.co.za] Sent: Monday, January 13, 2003 2:38 AM To: theora-dev@xiph.org Subject: [theora-dev] Multiple Feed Vp3 <p>Hi, I have been using Vp3 for some time now to compress the video from a single video source. However, I

can anyone confirm that, unlike VP3, Theora in fact decodes images right-side-up? (VP3 managed to turn everything upside down on encode and reverse it on decode) The tests I'm doing indicate that Theora doesn't reverse the image -- the first coefficients encoded correspond to the upper-left corner of the frame. ___ Dan Miller (++,) Founder, On2 Technologies --- >8 ---- List

Hello everybody, I hope to finish this MIME types discussion with these conclusions - it's taken enough bandwidth on these lists :). So here's a generic MIME types scheme that we all seem to be able to agree on and all that is needed for the moment. --- 1) Ogg encapsulated files: Any data that is encapsulated in an Ogg container will us the MIME type: application/ogg (as already

Hello everybody, I hope to finish this MIME types discussion with these conclusions - it's taken enough bandwidth on these lists :). So here's a generic MIME types scheme that we all seem to be able to agree on and all that is needed for the moment. --- 1) Ogg encapsulated files: Any data that is encapsulated in an Ogg container will us the MIME type: application/ogg (as already

Hello everybody, I hope to finish this MIME types discussion with these conclusions - it's taken enough bandwidth on these lists :). So here's a generic MIME types scheme that we all seem to be able to agree on and all that is needed for the moment. --- 1) Ogg encapsulated files: Any data that is encapsulated in an Ogg container will us the MIME type: application/ogg (as already