similar to: My issues with ogg and directshow...

I have been developing some directshow filters for ogg, and vorbis and speex... currently i have an ogg demux filter and a speex/vorbis decoding filter. In this pre-release only vorbis is operational... but the speex decoder is pretty much done... i jsut need to tweak the demux filter so that it can negotiate a speex connection with the other filter. Just though some people might find them useful

David Flynn has proposed a new Ogg Dirac mapping. The draft is here: http://davidf.woaf.net/dirac-mapping-ogg.pdf This is a much bigger break from other codecs than my draft (at http://wiki.xiph.org/index.php/OggDirac). We talked a bit about it on IRC today. Below is my summary; hopefully David can correct anything I got wrong or misleading. Comments? There are two main differences

On 02/05/07, Elaine YueLien <et@ihear.com> wrote: > Hi, > > Several months ago, I asked a question about seeking without a metric. > You can find one answer in this beta release, demonstrated in the > example program multiThreadSeek. There is also an example demuxer, and a > rewriter. Hi Elaine, congratulations :-) that's a nicely designed API you've got there.

Since we've been debating the merits of start or end timestamping... i'm curious why the page doesn't have both stamps ? That would solve the problems for all parties wouldn't it ? It's not like the overhead is huge... less than 0.1%... so on the average audio file thats 5 megs.... it's a 5k increase, which pretty much insignificant. Even on a 1gig video file it's

> No particular answers, but I can at least point out that the way > things were designed for CMML was to work with the existing Ogg > seeking algorithm. The idea is that a generic seeking routine can work > on any Ogg file, as long as it knows the granulepos->time mapping for > the logical bitstreams in the file. That's why all the > timestamp-related info is crammed into

Hi Folks, First, I would like to thank the eople in development who are doing so much to develope these great video and audio tools. I use Ogg Vorbis to store most of my music projects in studio and the results are stunning. Quite frankly, in the audio file reduction game, nothing beats Ogg Vorbis and I can personally say this from my own experience. So a huge thank you to the team. I've

> The advantage of storing this in the granulepos field itself, like > theora and CMML do, is that the seek code may already understand how > to handle the back pointer. Right now everything assumes the mapping > is from 'initialized decoder' + 'granulepos from page header' => > timestamp, or in the case of theora and CMML => 'timestamp' + 'last

Hi all, I started out looking for a multi-stream format, which led naturally to Ogg. I have been studying your web sites and code, and subscribed to this list. Eventually we would like to have a multi-stream codec which would have a discontinuous text component. In the meantime, I am working on running the transport/en- de-capsulation on a separate thread, and possibly with each codec on a

Hi, I'm trying to capture video and audio from a webcam in order to encode it with the Theora and Speex DirectShow-filters. For audio, this filter graph plays fine: http://www.huitl.de/mic-speexenc-speexdec-out.png. The video part is problematic. Please have a look at http://www.huitl.de/cam-theoraenc-theoradec-out.png. 1. The webcam provides the color formats RGB24, I420 and IYUV. The

Hi all, This may sound like a weird problem, but I am trying to create a DirectShow graph (using the Theora DirectShow filters from http://www.illiminable.com/ogg/) where I have a video source, which is connected to the Theora encoder, which is then connected to a Theora decoder. The problem is that this doesn't seem to work, those filters refuse to connect to each other. Now obviously

Hi Conrad, Just a word of thanks to you and other authors at xiph for your work. libogg++ is not meant to duplicate functionality that libogg and liboggz already provide. Rather, it offers a different partitioning of logical from transport, and is oriented to threaded execution. On Wed, 2007-05-02 at 20:42 +0900, Conrad Parker wrote: > Just to make sure we're not using the same word to

----- Original Message ----- From: "Ian Malone" <ibmalone@gmail.com> To: "ogg-dev" <ogg-dev@xiph.org> Sent: Friday, March 10, 2006 5:24 PM Subject: Re: [ogg-dev] oggfile, skeleton and vorbis tools >> This is something we might want to extend skeleton to support, i know >> we've talked about this kind of thing before. So that skeleton can

Hi, I have a question about seeking. In fact, it's more or less a kind of rambling and thinking aloud, circling around a question. I've been wondering how to deal with seeking in a stream, and what to do when seeking in the middle of a set of active events (eg, when several bits of text are supposed to be shown, but you seek after the time when they are first shown, and before the time

Oggcodecs release 0.83.17220 ---------------------------- Oggcodecs is a set of DirectShow filters for playing Ogg Vorbis, Speex, Theora and FLAC files in Windows Media Player and other players. This release has improved file and networking support, offered by default DirectShow filters. More bug fixes, particularly to Theora and FLAC, and updates for Internet Explorer's HTML5

Oggcodecs release 0.83.17220 ---------------------------- Oggcodecs is a set of DirectShow filters for playing Ogg Vorbis, Speex, Theora and FLAC files in Windows Media Player and other players. This release has improved file and networking support, offered by default DirectShow filters. More bug fixes, particularly to Theora and FLAC, and updates for Internet Explorer's HTML5

Oggcodecs release 0.83.17220 ---------------------------- Oggcodecs is a set of DirectShow filters for playing Ogg Vorbis, Speex, Theora and FLAC files in Windows Media Player and other players. This release has improved file and networking support, offered by default DirectShow filters. More bug fixes, particularly to Theora and FLAC, and updates for Internet Explorer's HTML5

Hello everybody, I intend to use Theora as a live video codec in a research project. This project is based on live video broadcast over a poor/slow link, which means lots of frames lost and low bandwith. Until now, it used XViD codec for video compression, which is a working solution but a lot blocky. I made some test with Theora and it looks better in a similar situation. Now, I would like to

Folks have noticed that the documentation is semi-silent about how to properly encode the granule position and interleave synchronization of keyframe-based video. The primary reasons for this: a) we at Xiph hadn't had to do it yet b) there are several easy possibilities, and the longer we had to think about it before mandating One True Spec, the better that spec would likely be. The

Hello learned ogg folks, and welcome to 2007. Sadly I am back at work already, and I'd like to seek your advice. We need to store raw RTP packets on disk as they are received from the network. There will be multiple streams of media--at least one audio and one video--that all need to go in the same file. We have decided to use ogg because it is the simplest container format that meets our

After a few other attempts at hacks to determine start times of pages, the only other option left is to partially decode the packets in the demuxer in order to give correct start time stamps after a seek. Someone mentioned it was relatively easy to do without a full decode. I've had a bit of a search in the mailing lists and on the web and can't find any details about it. What i need is