similar to: video codec comparisons

Yes, the Theora codec is based on VP3, which is an earlier version of ON2's VP6 codec. Theora is currently at its alpha 3 release, and is stable enough to have been used already for streaming live video from a number of conferences, and for encoding several videos that can be found at www.theora.org. Development has progressed to the point that the value of the codec can be seen. That

As far as video playback is concerned, it seems to mostly come down to how the video is compressed - although Gnash (the open flash player) still has a ways to go to play flash media as well as the closed source flash players. For the Colingo activity and library, we've found it very difficult to find optimum settings for flash and instead have decided to go with Theora. We've managed to

When I tried to view Basil's video streams yesterday, it worked with Firefox 3.5.x on both Linux and Windows, but failed with Chrome 3.0 on Windows XP.? I get opposite results with http://www.citizenofplanetearth.org/citizen.ogg The only browser I've tried that plays that video is Chrome 3.0 on Windows XP. The <video> tag I'm using is about as simple as can be. <video

I'm playing the "Honey" movie (both Honey-small and Honey-large) and I notice significant slowdown during periods of lots of motion (when the camera shakes, when the first man hops into bed, when people turn around and approach the camera, etc.). The audio plays smoothly all the time but when there is a lot of motion, the picture freezes and resumes when there's less motion.

I am going to improve theora codec with dynamically changing way. In this case we want to change compression parameters like video_q, sharpness when a keyframe is generated. When i set video quality parameter using cpi-> pb.info.quality in CommpressKeyFrame in encoder_toplevel it will not change dynamically. Can you please help me to do this. Wich function should i cange to achieve my

Are we interested, or ready for this? Andrew Seddon is offering to provide hardware to port Theora to the DSP Stamp. http://www.linuxdevices.com/news/NS4405077268.html John ---------- Forwarded Message ---------- Subject: RE: DSP stamp Date: Friday 29 October 2004 03:50 am From: "Andrew Seddon" <andrew.seddon@camsig.co.uk> To: "'John Kintree'"

just to let you know I posted a frontend to ffmpeg2theora and mencoder using the latest kommander. It's still in early developement but it'll get more feature with the time hopefully :) http://kde-apps.org/content/show.php?content=17831 Pat __________________________________ Do you Yahoo!? The all-new My Yahoo! - Get yours free! http://my.yahoo.com

I was reading recently that a modern CPU can execute 10 billion instructions per second, while a modern GPU can execute 1 trillion instructions per second. Intel anticipates that by the 1st quarter of 2011, more than 80% of their market will be i3 and i5 chips which have an integrated GPU. Does/will theora make use of this for encoding and decoding video? Regards, John Kintree

The One Laptop Per Child project is now including a digital camera in the design of their "$100" laptop computer. According to their latest news, this device will record video at 30 fps and at VGA resolution. Also, the OLPC project is considering using content from WikiMedia, and video files at WikiMedia are stored in ogg theora format. Have folks involved in the OLPC project

As a librarian and a father, I have both a professional and a parental interest in democracy and access to information. In addition to democracy, libraries and education are related to other concerns. For example, our physical and mental health is critical to our ability to learn and to process information fully. Suppose a worldwide referendum was held on a proposal for single-payer global

On Mon, 2 Jul 2007, Reid Spencer wrote: >>> it can be created in the repository, making the checkout process a simple, >>> transparent 'svn co'. This is entirely complementary to your idea. >> >> Yes, but that checks everything out, which is badness. > > Not really. He didn't define "./". If "./" is: >

On Sun, 1 Jul 2007, Tanya M. Lattner wrote: > I don't think we should have a docs module. Its much better to allow a > person to check out only llvm and get the appropriate documentation. Same > for hlvm, and whatever project. Its very inconvenient to check out > multiple things just to get llvm and docs. To put it another way, I think the docs for the subproject should follow

On 2007-07-02, at 03:49, Chris Lattner wrote: > I think checking out llvm-project should give you something like this: > > mydir/llvm-project/ > llvm-config/* > README.txt > Makefile > > And probably nothing else. > > Importantly, the README.txt would talk about how to use the > makefile, suggesting

On 2007-07-02, at 21:44, Chris Lattner wrote: > On Mon, 2 Jul 2007, Reid Spencer wrote: > >>>> it can be created in the repository, making the checkout process >>>> a simple, transparent 'svn co'. This is entirely complementary >>>> to your idea. >>> >>> Yes, but that checks everything out, which is badness. >> >>

It seems that autogen.sh failed when I tried to build theora from svn because it could not find libtool.m4. With Mandrake 10.0, I have libtool.m4 in /usr/share/aclocal/libtool.m4 Where is it supposed to be? Regards, John

On Mon, 2 Jul 2007, Gordon Henriksen wrote: > As a possibly less-engineered complement, your end-state could be > provided simply by creating folders in Subversion prefabbed with > appropriate svn:externals. Make one for each end-project (llvm-gcc, > new-cfe, and soforth). It's not nearly so clever, but it might allow > initial usage much closer to the 'configure; make; make

In order to experiment with the theora encoder, I bought a mini-DV camcorder a couple of weeks ago; a Panasonic PV-GS9 for $250. I wanted a mini-DV because it is claimed that capturing video from the camcorder to a computer over a firewire cable results in an exact copy of the recorded video. That was not my experience. The video I captured to my computer over the firewire cable, using both

As requested by Ralph in my introduction e-mail to this list [1], I've gone ahead and done some sample test timings for encoding between libtheora-1.0 and libtheora-1.1beta3, as available from the Theora website [2]. So far, I've tested with 4 different files that I generated with content I already have. The files, in brief, are the following: 1. planet-earth-360x240.yuv4mpeg - A

On Wed, Dec 01, 2004 at 01:15:57PM -0600, John Kintree wrote: > On Thu, 25 Nov 2004 10:25:43 -0800, Ralph Giles <giles@xiph.org> wrote: > > I think it would be better to say which formats are technically > > superiour for streaming (ogg and mpeg program streams) or > > editing (quicktime/matroska) or dead/obsolete (AVI, MCF?), > > If video is recorded and saved in

fast enough, and data transfer costs for video servers are low enough, and video codecs such as RealVideo 10 and VP6 are good enough that online video is practical today. For people who already have DSL, cable modem, or other broadband Internet connections, the biggest barrier to their being able to view any movie Hollywood has ever produced simply by pointing and clicking at some link on the