search for: piacentini

--- 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.

...es. Hopefully then we can do a real merge & test/ checkin. Final bitstream change would be the arbitrary size fix, with a cropping rectangle in the header. Anyone working on that? ___ Dan Miller (++,) Founder, On2 Technologies <p>> -----Original Message----- > From: Mauricio Piacentini [mailto:mauricio@tabuleiro.com] > Sent: Friday, May 23, 2003 4:51 PM > To: theora-dev@xiph.org > Subject: [theora-dev] Win32 experimental player/encoder > > > This one is ust to let you all know that Windows versions of > a Theora simple > player and encoder are checked i...

...evised codebase and link it with the Mac/Windows existing codec framework, substituting the appropriate pieces. I will let you guys know of the results, could be a good first step in the maintenance of future versions of the codecs. Regards, Mauricio Piacentini Tabuleiro --- >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-dev-request@xiph.org' containing only the word 'unsubsc...

...e Contact: [1]carsten@xiph.org Date: August 20, 2003 Table of Contents 1 Status Updates 1.1 Monty 1.2 Jean-Marc Valin 1.3 Stan Seibert 1.4 Ed Zaleski 1.5 Brendan Cully 1.6 Karl Heyes 1.7 Mauricio Piacentini 1.8 Dan Miller 1.9 Ralph Giles 1.10 Jack Moffitt 2 Recent Developments 2.1 Neuros Firmware News 2.2 Speex ACM Codec and Netmeeting support 2.3 Oggsplit 2.4 Ogg Writ [2]Previous Issues of Ogg Traffic 1...

Well, I've been slamming my head against this all night, so it's time to ask for help... Having gotten together a reasonably decent port of what I thought was the whole API to the Ogg Way, complete with Ogg mem management and bitpacking, I started digging deeper in the code... only to find that it looks like I only have a middle stream handler. The encode and decode code both assume that

...[1]carsten@xiph.org Date: June 3, 2003 Table of Contents 1 Status Updates 1.1 Monty 1.2 Stan Seibert 1.3 Jean-Marc Valin 1.4 Ed Zaleski 1.5 Mike Smith 1.6 Brendan Cully 1.7 Mauricio Piacentini 1.8 Ralph Giles 1.9 Dan Miller 1.10 Timothy Terriberry 1.11 Andrew Chatham 1.12 Manuel Lora 1.13 Jack Moffitt 1.14 Chris Cheney 2 Recent Developments 2.1 Ogg is officially offici...

...rsten "Purple" Haese Contact: [1]carsten@xiph.org Date: July 15, 2003 Table of Contents 1 Status Updates 1.1 Stan Seibert 1.2 Ed Zaleski 1.3 Brendan Cully 1.4 Karl Heyes 1.5 Dan Miller 1.6 Mauricio Piacentini 1.7 Ralph Giles 1.8 Andrew Chatham 2 Recent Developments 2.1 Libshout 2.0 / ices 0.3 Tandem Release 2.2 OggDS DirectShow Filters in CVS 2.3 Apache gives Thumbs Up to application/ogg 2.4 Ogg Vorbis Decoder Chip [2]Pre...

...ese Contact: [1]carsten@xiph.org Date: June 24, 2003 Table of Contents 1 Status Updates 1.1 Monty 1.2 Stan Seibert 1.3 Jean-Marc Valin 1.4 Ed Zaleski 1.5 Brendan Cully 1.6 Karl Heyes 1.7 Mauricio Piacentini 1.8 Ralph Giles 1.9 Timothy Terriberry 1.10 Manuel Lora 1.11 Jack Moffitt 2 Recent Developments 2.1 Positron 1.0 2.2 Speex 1.0.1 2.3 Theora Alpha 2 2.4 libshout2 beta 1 2.5 Speex ACM cod...

First, an introduction: I work in a group that makes educational software. In the coming months, we're planning to release our entire Mac/Windows runtime under the GPL. We currently encode our audio with MP3 and our video with VP3. For playback, we rely on QuickTime 5 on MacOS and Windows. In the short run, we'd like to help maintain the VP3 QuickTime codecs, preferably without

good question. I would think beta means the bitstream is more or less stable. Monty? >If June is the goal for public release, is the second milestone the first beta/rc1? Guess what I'm asking is, whats a good estimate for when the codec will be frozen as far as backwards compatability.. -----Original Message----- From: Arc [mailto:arc@indymedia.org] Sent:

...Technologies <p>> -----Original Message----- > From: Ralph Giles [mailto:giles@xiph.org] > Sent: Monday, June 09, 2003 8:43 AM > To: theora-dev@xiph.org > Subject: Re: [theora-dev] CVS updates / moving to alpha 2 > > > On Monday, June 9, 2003, at 03:17 am, Mauricio Piacentini wrote: > > > Derf checked his cleanup and re-entrancy patch a few > minutes ago, and > > also > > solved a comments leak in the process. Very cool stuff. > > > > I checked in the frame crop change in the examples player a > few minutes > > earlier, s...

...ld to indicate the intended colorspace for the video. Additional header packets have been added for decoder tables and vorbis-style comment metadata. There have also been a number of other refinements and api changes. There's also an example encoder and player for win32, written by Mauricio Piacentini. Recent CVS versions of libogg and libvorbis are required as these changes are still unreleased. Thanks to everyone who contributed! We all look forward to the next release. cheers, -r --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg...

...ld to indicate the intended colorspace for the video. Additional header packets have been added for decoder tables and vorbis-style comment metadata. There have also been a number of other refinements and api changes. There's also an example encoder and player for win32, written by Mauricio Piacentini. Recent CVS versions of libogg and libvorbis are required as these changes are still unreleased. Thanks to everyone who contributed! We all look forward to the next release. cheers, -r --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg...

Question: is it permissible to put more than one frame packet into a page? At 30 fps, Ogg page overhead is on the order of 8 - 10 kbits/sec. At low datarates, this is going to be unacceptable. If I shove a few frames into a page, how does this affect the granulepos stuff? ___ Dan Miller (++,) Founder, On2 Technologies <p>--- >8 ---- List archives: http://www.xiph.org/archives/

This is mostly for derf, but others may be interested too. Attached are the warnings (stderr log) from compling theora under gcc 3.2.3 (Debian). There quite a few. Many of them are spurious, but some indicate real bugs. In particular it seems likely we have more unitialized variables since Dan reports differing encoder output depending on the compiler used. In general, we need to go through

[standard disclaimer about my mail format] in ftp.vp3.com/theora user: vp3 pass: vp3dev theora_dbm_5-28.zip this implements a bitstream change; the header now contains a compressed huffman tree rather than the frequency counts (as discussed) pardon my inability to use diff correctly. The change in toplevel.c is trivial (new function names & params) huffman.c is the important one. I

...is tracks to an Ogg stream, obviously without recompression. There are also several freeware/shareware tools for Windows and Mac (like VirtualDub) that are widely used, but they only work with VFW or QT codecs. Any thoughts on this? Regards, Mauricio Piacentini Tabuleiro --- >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-dev-request@xiph.org' containing only the word 'unsubsc...

...OSX, starting with a clean installation. I will report to the list if there are any obvious steps missing or dependancies that need to be installed. Which version of CW are you guys using now? I could build it with CW7, but it is a bit buggy to debug on MacOSX. Should I use CW8? Regards, Mauricio Piacentini Tabuleiro <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-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is...

...of version number updates and miscellaneous little bug fixes, in preparation for the Vorbis 1.0.1 release. 1.6 Timothy Terriberry Besides fixing a memory leak in Theora's comment handling and cleaning up the Theora colorspace indicator, Timothy took some time to analyze Mauricio Piacentini's VP3-to-Theora converter and made it work. His work proved two things: Lossless transcoding from VP3 to Theora is possible, but it requires Theora to (internally) change its coordinate system back to VP3's coordinate system. 1.7 Ralph Giles Ralph committed various odd, ends...

Hi all, > One problem I see with your proposed implementation is that it does not > specify how audio and video would be synchronized, since there are no > absolute time stamps for the video frames. So it is difficult to account > for > audio latency on different systems, much like when you play an AVI file. > Ideally it would be wonderful to have timestamps that could be used