similar to: lossless codec

Hi, has the subject of creating a lossless video codec been considered? I know Dirac is available, but it is a hybrid; saving a file and having to set a compression setting is not very intuitive for a novice. I suggest a lossless codec for the distant future, an idea of the codec's name is: FLAV. Free Lossless Agile Video. The goals of it would be: Provide lossless video, have a

Hi all, I am trying to set up the codecs table in the wiki and we have played a bit with Dirac to find out what existing tools write into the header. The Schroedinger implementation by Fluendo uses (or used to use) "KW-DIRAC" as the identifier in the Ogg header. "BBCD" is the identifier of each of the Dirac data packages. More recently, I read that the Dirac Sequence header

Excellent, thanks for noticing - will add that. Also: question about the Dirac codec identifier in Ogg. It is currently char[5]: 'BBCD\0' - but in your spec it is char[4]: 'BBCD'. Which one should we put in? Cheers, Silvia. On Sat, Aug 16, 2008 at 5:31 PM, David Flynn <davidf+nntp at woaf.net> wrote: > On 2008-08-16, Ralph Giles <giles at xiph.org> wrote:

On Tue, Nov 08, 2005 at 04:59:33PM -0800, Arc wrote: > This is also interesting work in that, once we're done, we'll have a standard to > use for a compressed lossless format.. a FLAC for video, for editing or archival > purposes, similar to HuffYUV. Well, we're talking about an uncompressed format. OggMNG is already "FLAC for video". However, it doesn't do

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,

On Sat, Aug 16, 2008 at 12:23 AM, Silvia Pfeiffer wrote: > Have we got a spec? If not, we may want to remove it altogether and > make the fixes in our wiki as the spec develops. We have a draft spec with no implementation. I can't imagine the magic changing, so I think it's ok to leave it in, but I'm ok to remove it if you think that's best. I do think there's little

On Thu, Aug 14, 2008 at 9:14 PM, Silvia Pfeiffer wrote: > The IETF has a final draft of our RFC at > ftp://ftp.rfc-editor.org/in-notes/authors/rfc5334.txt (yes, it goes > from 3534 to 5334 - funny!). Didn't we decide YUV4MPEG should be 8 octets as well? -r

Hi, Is there a plan to make a FLAC ACM codec? Then we could use FLAC together with an open source lossless video codec like Huffyuv (http://www.math.berkeley.edu/~benrg/huffyuv.html). Daniel

I tested the new FFMPEG2THEORA 0.26 and some players. 1. Biggest bug: http://freefile.kristopherw.us/uploads/temp/push5tru.zi7 encodes into http://freefile.kristopherw.us/uploads/temp/push5tru.ogv the problem: it doesn't play well. MPLAYER reacts very badly, reports "invalid frames" and HANGS (known issue ???). But in VLC there is also a problem, less severe:

In the effort of reducing list traffic, I've consolidated two replies into one: On Tue, Nov 08, 2005 at 08:24:33PM -0800, Ralph Giles wrote: > > BTW, there are already a number of general "raw" video formats in > professional use; it's not just AVI we have as prior art. :) > I'd like to see some discussion of the merits of adopting one of those > if we

Hi again, could someone tell me why there is links to Dirac on the Xiph wiki? The BBC takes care of Dirac, not Xiph? Is Xiph just a promoter? Secondly, how would one choose to save the video in a lossless format with Dirac, is there some interface (like a switch) in an application for this to be achieved? -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/

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

I know this probably transcends the scope of the current aims of Ogg video, but one thing I'd consider extremely useful is a lossless video compressor. There are a few of them out there (e.g. PICVideo's lossless wavelet codec) but I've found no free ones so far. The primary use would be for storage of video clips that would be too cumbersome to store as raw frames but still require

As was briefly discussed on IRC, ffmpeg and mplayer currently output two somewhat incompatible YUV4MPEG streams. This meant that encoder_example could take input from mplayer, but not ffmpeg or movtoy4m (a QuickTime->Y4M tool). This is a patch that fixes this issue and should allow encoder_example to take input from either format: diff -urd xiph-cvs/theora/examples/encoder_example.c

I agree - we should use only hex or octal, but not mixed. Cheers, Silvia. On Sat, May 31, 2008 at 2:20 AM, Ivo Emanuel Gon?alves <justivo at gmail.com> wrote: > I received the following comment regarding the table: > >> The table contains a mix of octal and hexadecimal 'escape sequences' >> for non-printable / non-ASCII octets. >> I strongly suggest to only

As requested by Ralph in my introduction e-mail to this list [1], I've gone ahead and done some sample test timings for encoding between libtheora-1.0 and libtheora-1.1beta3, as available from the Theora website [2]. So far, I've tested with 4 different files that I generated with content I already have. The files, in brief, are the following: 1. planet-earth-360x240.yuv4mpeg - A

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 >

This seems interesting so I thought I'd put it out to see what you all think... Josh --- emi <abcdcax@gmx.de> wrote: > It would be very, VERY cool if FLAC would work > together as one codec with the lossless video codec Huffyuv > (http://www.math.berkeley.edu/~benrg/huffyuv.html). > > Erwin __________________________________________________ Do You Yahoo!? Get email

Hi, I didn't get to the bottom of it, but Valgrind is whining on libtheora when encoding a video to a 16 width or 16 height video. While you may think I'm weird for encoding to such a size, I didn't care about the output video, but I reckon it should work. The bad accesses seemed to be of pixel data, in FilterVert__c, and in FilterHorz__c (from memory), but I didn't investigate

This file is impossible to encode into Theora (AVI works) with FFMPEG: http://freefile.kristopherw.us/uploads/temp/ffx3yuv.zi7 See also: http://sf.net/tracker/?func=detail&aid=2789359&group_id=205275&atid=992986 Tried many versions, until 2009-May PageFault, Sherpya's 2009-Apr and 2009-May versions produce garbage. Anyone can confirm this ? Used just ".ogv" as output