similar to: packetno, granulepos, streaming and framing

dear list, i am trying to write a small program which reads an ogg file and writes it to another ogg file (and changes serial number, granulepos etc on the fly). reading the ogg file is ok (ogg_sync_pageout, ogg_stream_pagein, ogg_stream_packetout). but writing the file doesn't work - the granulepos and page structures don't match with the original file. here's what i am doing.

2008/11/26 David Flynn <davidf+nntp at woaf.net>: >>>> http://trac.annodex.net/changeset/3801 >>> >>> I'll test this shortly. > > Ok, i've tested muxing some audio and video together and that works fine. > woo. great, thanks :-) So the last remaining tool to check is oggz-chop. I at first assumed it would not work with Dirac's granulepos,

Hi, I'm wondering if the Dirac granulepos parsing in liboggz and display in the oggz tools is currently correct, as I'd like to do a release of these soon. A couple of days ago David Schleef mentioned there were some problems. David, is that currently true (ie. since David Flynn's recent updates to support Dirac), and if so could you please explain what the problems are, or point me

On Thu, Nov 13, 2008 at 06:06:10PM +0900, Conrad Parker wrote: > A couple of days ago David Schleef mentioned there were some problems. > David, is that currently true (ie. since David Flynn's recent updates > to support Dirac), and if so could you please explain what the > problems are, or point me to a bugtracker where they are reported. eg. I mostly meant what you apparently

Hi. I assume that I am deeply stupid and have missed something obvious, but why does this bare-bones code not generate a valid (If trivial) opus file? Running opusinfo I ge the following which I interpret this to mean that not even the first packet gets a pass: New logical stream (#1, serial: 1f0cce42): type opus WARNING: Could not decode Opus header packet 0 - invalid Opus stream (1) WARNING:

I've got a question about the granulepos in speex packets. >From the speex manual (http://www.speex.org/manual2/node7.html#SECTION00073000000000000000): >The third and subsequent packets each contain one or more (number found in header) Speex frames. These are identified with packetno starting from 2 and the granulepos is the number of the last sample encoded in that packet. In

2008/11/21 David Flynn <davidf+nntp at woaf.net>: > On 2008-11-21, Conrad Parker <conrad at metadecks.org> wrote: >> 2008/11/15 David Flynn <davidf+nntp at woaf.net>: >>> On 2008-11-14, Conrad Parker <conrad at metadecks.org> wrote: >>>> It seems oggz chop, merge and sort will need some attention to deal >>>> with the Dirac

(Sending again after subscribing, I guess the moderator is on vacation.) I'm working on support for tagging Speex files for Mutagen[0] and part of the specification at [1] is confusing me. It says the first page should have granulepos 0 and packetno 0. Does this really mean page sequence number 0, since the Ogg format doesn't number packets? If it doesn't mean page sequence number,

2008/11/14 David Flynn <davidf+nntp at woaf.net>: > On 2008-11-13, Conrad Parker <conrad at metadecks.org> wrote: >> I'm wondering if the Dirac granulepos parsing in liboggz and display >> in the oggz tools is currently correct, as I'd like to do a release of >> these soon. > > I believe it is -- although if correct support in the rest of the >

2008/10/29 Romain Beauxis <toots at rastageeks.org>: > > I am currently implementing theora for our application. > In our model for generating ogg streams, we may want to stop > a stream while not providing a new YUV data buffer for encoding. > > Current API doesn't allow such thing, since the eos flag is set by the > packetout function only when the last_p parameter

Hi, I'm the main author of Speex (http://speex.sourceforge.net), an open-source speech codec that uses Ogg for file storage. I'd like to have feedback on the way we store Speex data in Ogg files to make sure we do the right thing. The Speex documentation can be found at http://speex.sourceforge.net/manual/ but here's the part about Ogg: <p><p>Speex bit-streams can be

Hi there, First of all, sorry for my English I'm not a native english speaker. I need to develop and application witch does 3 tasks with oggs files : 1/ chain 2 ogg files 2/ extract a part from an ogg file 3/ add silence between two chained oggs files. Basically, - For the 1st task, I think that the best way to chain ogg files is to use the "cat" (on linux) or "copy

So, I abandoned the hope of using the ogg python bindings to do pure ogg container encoding. I started looking at the libogg in the hopes of retooling the bindings to follow a better object model and it actually looks like the problem is down in libogg, not the bindings. Am I crazy or does libogg rely on libvorbis to return ogg_packets, and that there are no functions that will build an ogg_packet

On 2008-11-13, Conrad Parker <conrad at metadecks.org> wrote: > I'm wondering if the Dirac granulepos parsing in liboggz and display > in the oggz tools is currently correct, as I'd like to do a release of > these soon. I believe it is -- although if correct support in the rest of the liboggz tools is required, a little more work may need to happen. > Here's some

On Sat, 2006-07-15 at 14:35 -0700, Ralph Giles wrote: > On Sat, Jul 15, 2006 at 02:17:22PM -0500, Joe Wreschnig wrote: > > > I'm working on support for tagging Speex files for Mutagen[0] and part > > of the specification at [1] is confusing me. It says the first page > > should have granulepos 0 and packetno 0. Does this really mean page > > sequence number 0,

On Fri, Dec 05, 2008 at 06:34:41AM +0900, Conrad Parker wrote: > So the last remaining tool to check is oggz-chop. I at first assumed it > would not work with Dirac's granulepos, but it seems to do something > vaguely useful: > > conrad at chichai:~/share/oggz-chop$ oggz chop -s 7 -e 11 -o > sage-7-11.ogv ../dirac/sage-640x360.ogg > conrad at chichai:~/share/oggz-chop$

Hi. I am trying to implement an ogg codec using libogg, and testing with a piece of encoded data you can see below. It consists of 4 pages, the first two being header data, the third containing two packets of data and the last containing one packet of data. I am confused at the results I get if I corrupt the third page (The first one of the two that contain data). If I corrupt the first page,

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I've made a lot of progress on my lossless Vorbis editing project. I have a few more questions about granulepos issues I don't quite understand. granulepos is a property of Ogg pages, yet it is a field in the ogg_packet struct. When reading packets from an Ogg stream, the granulepos is set to -1 for all packets except the last packet in a page. From this I infer that - for encoding,

I'm currently working on a speex + theora webchat. I have both working alone, but to make them work together and to know where the package goes, I'm trying to use ogg packages. With theora there has been no problem, but with speex I can't make it work. The problem is that for a second it works great, but then it begings to gain lag, and in a little time it has 5-10 lag seconds (into