search for: jkintree

...rt 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'" <jkintree@swbell.net> Cc: <theora-dev@xiph.org> Hi John, (as you did I've copied to the xiph mailing list as this is probably interesting to a few people!) Indeed this is the target market for the DSP Stamp, in fact we will shortly be releasing a Bluetooth video camera development kit. The ide...

...ested in porting the theora codec? > > Best regards, > > Andrew Seddon(andrew.seddon@camsig.co.uk) > Cambridge Signal Processing, Ltd. (www.camsig.co.uk) > TEL: +44 1354 742563 > FAX: +44 1354 740693 > > > > -----Original Message----- > From: John Kintree [mailto:jkintree@swbell.net] > Sent: 28 October 2004 18:23 > To: sales@camsig.co.uk > Subject: DSP stamp > > Would the DSP stamp, if built into webcams or camcorders, allow for > real-time compression of video in ogg theora format? > Thanks, > John Kintree > http://www.theora.org

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

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

Reviewers who have published comparisons of video codecs recently tend not to publish their source video clip, nor encoded video clips.? It might help promote theora if there was a link we could provide to a nice source clip, only one or two minutes long with a mix of action and talking head spots, with several versions of it compressed in theora format; maybe 250 kbps, 500 kbps, 750 kbps, 1 mbps,

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

...lves to conduct a worldwide referendum could be the next step in humanity's social evolution. If necessity is the mother of invention, considering the depth of our need, it is time for a birthing. vanguard, John Kintree 4043 Delor Street St. Louis, MO 63116 314-351-7454 http://home.swbell.net/jkintree/islt/ This message may be copied without restriction. Responses off listserves are welcome. JK

I appreciated the link to http://www.techimo.com/articles/index.pl?photo=33&SID=12&tag=SNnb323 although, as Freun said, it was "Not really all that informative,..." Is anyone aware of a site that has a downloadable video clip that was created for comparison purposes with different video codecs (MPEG 1, 2, 4, divx, Windows, Real, VP3, VP4, VP5, and so on)? Preferably, each

An article was posted at www.slashdot.org on May 4th about another review of video codecs. The review can be found at: http://www.doom9.org/index.html?/codecs-103-1.htm Theora was not one of the seven codecs included in the review. I wonder how much of a window of opportunity exists before the industry stabilizes on a dominant, widely used video codec. The situation still seems to be fairly

It seems like more efficient file transfer technology may be about as important to bringing video production and distribution to the masses as more efficient video compression. I'm wondering how much of a difference BitTorrent made in the downloads of the theora sample files. Is there a record of the number of downloads that were made, and the number of Gbytes that were sent from the server

It looks like there are at least three factors that affect the practicality of video that is distributed over the Internet. 1) The speed of the network connection. 2) The data transfer expense for the video server. 3) The quality of the codec. A year or two ago, I might have included the capacity and cost of mass storage as a fourth factor, but with 250 GByte and larger hard drives on the market

Interesting. I downloaded and installed both HelixPlayer-0.4.0.187-20040615.i586.rpm and RealPlayer-0.4.0.186-20040615.i586.rpm on my Mandrake 10.0 system. With hxplay, the theora sample video, Mixtape.small.ogg, played as well as it does with mplayer 1.0pre4, which is reasonably well. But when I tried to watch it with realplay, the program choked and died. Also, when I tried to watch

Here are a few sentences from a Sept. 17, 2004 article in th EETimes. http://www.eetimes.com/sys/news/showArticle.jhtml?articleID=47900195 ******************** begin excerpts ************************ Victor Company of Japan, Ltd. (JVC) will use Microdrive CompactFlash-sized cards with a 1-inch hard-disk drive in its digital video cameras. The camera will be capable of recording one hour of

On Wednesday 15 September 2004 10:01 am, Neil wrote: > You would have been getting an exact copy on disc, but I suspect the > software you used was degrading playback. I think you're right. When I play video-a1v7x352y240.ogg, some of the artifacts I noticed in the firewire captured video.dv are no longer there. The *.dv video is sharper, but the *.ogg video, at 1/16th the size,

Andrey Filippov reports at his sourceforge website that he is 50% of the way towards the implementation of ogg theora in a FPGA, and has a goal of reaching 100% (leaving out motion compensation) by Dec. 14, 2004. These are some of the tasks he has completed most recently: Added 8-point forward DCT following the algorithm suggested in Theora specs. 2004-10-31 22:17 Created 2-d IDCT according

Ralph Giles posted this announcement at www.theora.org last week. I tried to reword it for this list, but couldn't think of a way to improve it. In case you haven't already seen this: ******************************************************* We're pleased to announce a new release of the libtheora reference implementation. This is an incremental update over alpha 3, in support of

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

Having built libtheora-1.0alpha3, I tried it out on a 46 second long, 161 MByte raw dv format video clip. First, I copied these lines from ogg-theora-microhowto.html <snip> mplayer -ao pcm -aofile stream.wav -vo null file_to_be_encoded.avi & mplayer -vo yuv4mpeg -ao null -nosound file_to_be_encoded.avi & encoder_example -v 1 -a 1 stream.wav stream.yuv > theora_file.ogg

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