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...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'" <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...

...seemed like your module might be a candidate for embedded hardware that could allow camcorders or webcams to encode video into theora format in real-time. I look forward to any further information you can share about this. Regards, John On Thursday 28 October 2004 01:33 pm, you wrote: > Mr Kintree, > Thanks for your enquiry. I don't have any direct experience with the Theora > codec, however we are currently in negotiation with ON2 to provide their > codec's on our hardware. I am currently waiting for them to get back to me > with some further technical specifications. As...

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

...we've found it very difficult to find optimum settings for flash and instead have decided to go with Theora. We've managed to find some compression settings that keep the videos incredibly small with surprisingly good playback quality when played with Totem. Arthur Richards Colingo John Kintree wrote: > There is a new review of the XO laptop at: > http://www.notebookreview.com/default.asp?newsID=4093 > > The review is mostly positive. The most disappointing thing for me > was, "Flash is also a very processor-intensive application, especially > Youtube videos. The...

...ogg format, very easily with just a couple of mouse clicks. Happily, once I have a video clip in theora format, I can re-open it with kdenlive, perform a few additional basic edits, and then re-save it in theora format. This is encouraging considering this is kdenlive version 0.7.5. Regards, John Kintree http://www.citizenofplanetearth.org PS The video is at the bottom of this page.

...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

...s considering using content from WikiMedia, and video files at WikiMedia are stored in ogg theora format. Have folks involved in the OLPC project communicated with people at Xiph about supporting development of theora? It looks like OLPC is well funded, and would be in a position to do that. John Kintree -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/theora/attachments/20061009/c491a1f0/attachment.html

...a format; maybe 250 kbps, 500 kbps, 750 kbps, 1 mbps, 1.5 mbps, and 2 mbps.? Then if anyone wants to do a comparison of theora with alternatives, the set of theora clips with source clip would already be available for that purpose.? If this already exists, a link would be appreciated. Regards, John Kintree http://www.citizenofplanetearth.org ? ? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/theora/attachments/20100315/e8e63c9a/attachment.htm

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

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.

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?)...

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

Hi all, I just wanted to let people know that new plugins are available for RealPlayer 10 and the Helix Player for Linux. This update fixes various seek related problems and loss of lip-sync. <p>You can find the RealPlayer 10 plugins at https://helixcommunity.org/projects/xiph/ The Linux plugins come with the Helix Player which can be downloaded at

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

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

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,

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

I was just looking at http://svn.xiph.org/experimental/derf/theora-exp/README and this is what it says about the encoder, <snip> The encoder is highly experimental. It currently generates valid bitstreams using ALL of the decoder features supported above. However, it is also currently broken, producing pretty horrible quality files with high bitrates. This should be tracked down and

Kino, a non-linear video editor for Linux, now exports in ogg theora format. I just posted a feature request at http://kino.schirmacher.de/ for a future version of Kino to edit video in native ogg theora format in addition to dv format. John

Requests are sometimes received for a speaker to make a presentation about Ogg Vorbis or one of the other Ogg projects. When it is not feasible for a speaker to attend the conference in person, can a presentation by 2-way streaming video and audio be made instead? John