similar to: Frame rates in Theora header...

Thought I'd pass this along for Theora users on the Windowzz platform. The latest alpha build of the ffdshow filter (20041003) on Sourceforge http://sourceforge.net/projects/ffdshow/ Seems to have had theora, broken since the June/July unofficial builds, fixed. This build also connects nicely to Zen's Ogg splitter and also decodes Helix Producer encoded Ogg's well. The encoder side

Hi all, I've been trying to add Vorbis to my Theora stream, and it seems to be working in mplayer and oggz-validate seems fine with it (apart from the missing EOS flags in the final pages, but this is expected). Xine and Cortado are both making a mess of it though: http://www.firestorm.cx/files/followthedot.ogg It's a very boring moving green dot - it moves smoothly in mplayer, bounces

The first release of a theora decode filter for directshow is available. Still no doubt buggy as hell... but it can now play all my limited collection of test videos ok. Alpha 3 vids only. See the already known bugs on the page. www.illiminable.com/ogg/ Enjoy, Zen. <p><p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To

Hello, Here are my patches to adapt the Theora frame rate of the encoded stream to the DirectShow clock. Theora has a fixed frame rate for a video stream, contrary to a DirectShow stream. When Theora do not know the frame rate of a video device, it defaults to 30 fps, and the resulting stream playbacks too fast or too slow depending on the video device frame rate. For example, a DV cam (PAL, 25

After trying to find out what to do when no packets complete on a page... i reread the ogg spec and found this... "A special value of -1 (in two's complement) indicates that no packets finish on this page." So i searched through a few files and it appears that the muxer doesn't do this... has this been depracated ? In all cases i can find that this happens the page has the same

Hi, What are the two granule rates in a fishead packet supposed to be for ? Since each of the streams has a corresponding fisbone packet with its own granulerate in it, and they can be all different, wha does the presentationtime num/den means ? Also for hte basetime num/den, since the UTC time which is also present in fishead seems to be a textual representation rather than a linear count ?

Hi there, I have just read in the documentation that Theora doesn't support variable frame rates. I don't know whether it will support it in the near future and since I cannot code I don't really know whether this would be easy to implement. But I'd ask you to consider implementing variable frame rates. The reason for that implementation would come from the much smaller size

hi guys, first of all, i'd like to ask if there any crossplatform software/service ( gui is also better, an online application like firefogg is great, or at least a command line tools for any platform) to combine theora videos, other than oggcat... i am doing some art projects that people should be able to remix featured theora videos and i find oggcat very usefull in theory but not in

I have a few more questions about theora... if someone could answer or point me to a source of the information... Firstly in the header there is width and height parameters. Are these fixed for the entire file ? Is it possible for say halfway through the dimensions of the video to be changed ie two different size videos are spliced together ? If it is... does the header represent the first

Dear all I'm aware that there have been several discussions about the seeking issue and I'm sorry to bring this up again. To solve the problem with Inter-Frame garbage, a seek to the previous keyframe has to be made. The keyframe number should be extracted from the granulepos of the frame where we want to seek to. I hope I understood the theory - unfortunately a few questions have

Hello. How can I tell the number of frames in ogg/theora video file, without actually reading the file? Or, how can I tell its playing time (which is basically the same thing). I didn't find the information in THEORA_STATE, THEORA_INFO, but with the codec installed (illuminable oggcodecs), Windows Media Player shows the ogg/theora file playing time, before it starts playing the file.

Hi all, I'm actually learning how to use ogg, theora and vorbis. My idea is to create a small program running, that is able to concatenate ogg video+audio files. However I have some small questions. Here I will start with the first one: I read the following for seeking in ogg for a theora key-frame: ---- snipp (http://www.xiph.org/ogg/doc/ogg-multiplex.html) ---- [...]The third point

Just playing around with my new flac code, and did some tests with stuff from the reference tools, and i noticed that one of the fields in the first header is wrong. (The number of headers field is 1 less than it should be) The spec doc says... " A two-byte, big-endian binary number signifying the number of header (non-audio) packets, including this one. " Here's a partial dump

Hi All, My dependent variable is a ratio that takes a value of 0 (zero) for 95% of the observations and positive non-integer values for the other 5%. What model would be appropriate? I'm thinking of fitting a GLM with a Poisson ~. Now, becuase it takes non-integer values, using the glm function with Poisson family issues warning messages. Warning messages: 1: In dpois(y, mu, log = TRUE) :

Hey, everyone. I'm sure this thread will generate some email! Some people are working on a super-easy to use converter for people to be able to convert videos to Theora for the upcoming Get Video on Wikipedia push: http://videoonwikipedia.org/ (Note that this isn't being pushed yet, and is pre-launch quality!) For the converter one thing we'd like to be able to provide is a set

I'm interested to know of any player, which can properly resync after receiving a theora+vorbis stream that has been cut somewhere in the middle... ie it doesn't start at granule 0. The problem being... when streams are cut in this way, the start time, and the times of the first few packets in each stream are unknown. When working at a packet level... the first few packets will arrive

hello. as many times before i ran into troubles to encode with ffmpeg2theora from a 3gp file. the example files are here: original: http://startx.plentyfact.org/media/theorastuff/test.3gp ffmpeg2theora: http://startx.plentyfact.org/media/theorastuff/test.ogv the 3gp file ( from some phone ) is Video: mpeg4, yuv420p, 800x480 [PAR 1:1 DAR 5:3], 2962 kb/s, 23.95 fps, 60 tbr, 1k

How well dose theora handle varaiable frame rate? I looking a using a rolling frame rate that move up and down from 1 frame per 60 second (no montion) to 100 frames per second (very fast montion eg: lightning) tom_a_sparks Light travels faster then sound, which is why some people appear bright, until you hear them speak

Hi, Attached is my patch to add theora encoding to ffmpeg's libavcodec (by using libtheora). I am requesting help to fix the bug I mention below and am seeking general comments before I submit the patch properly. Files encoded using this encoder have a problem playing in VLC. The files will not play unless "Drop late frames" has been unticked in the advanced video settings.

I try to test Theora in Windows , but i only find one Theora encoder , ffmpeg2theora. I don't like because is command line , and i want to encode from a visual encoder. I also try ffdshow but i don't know how to encode video and audio to get Theora ... With ffdshow i get a worst 4 FPS encoding ... Would be a good idea that xiph contact to creators of VirtualDubMod