Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
|
|
Thread Tools | Search this Thread | Display Modes |
9th January 2006, 16:33 | #1 | Link |
Registered User
Join Date: Dec 2005
Location: Proxima Centauri
Posts: 315
|
NEW CODEC! 128 kbps and less for 5.1 surround encoding for MPEG4 (Xvid/Divx) movies
Dear All,
I am happy to annonce that we have just finished a huge 5.1 surround sound compression research project. Software tools for encoding movies with full 5.1 surround, and for real time decoding are available now. www.aud-x.com THE TECHNOLOGY IS FREE I hope that you will find it useful. All comments are welcome :-) Peace 3d Last edited by 3dsnar; 9th January 2006 at 16:37. |
9th January 2006, 17:34 | #2 | Link |
Moderator
Join Date: Oct 2001
Location: England
Posts: 3,285
|
Perhaps you could post a little more about how the codec works?
You mention MP3 compatibility (on the website). Could you give us more details on how this works? (i.e. is this a Multichannel MP3 implementation?) You also state that the projects uses code from AC3Enc and LAME. You realise that these are LGPL projects and can only be linked to in a certain way? The rules are quite strict...(such as releasing object files of your project when not linking dynamically to the libraries as in Aud-Xs case, etc) Thanks for any insight, -Nic Last edited by Nic; 9th January 2006 at 17:38. |
9th January 2006, 17:51 | #3 | Link |
Registered User
Join Date: Dec 2005
Location: Proxima Centauri
Posts: 315
|
> Hi, thanx for interest.
[QUOTE=Nic]Perhaps you could post a little more about how the codec works? You mention MP3 compatibility (on the website). Could you give us more details on how this works? (i.e. is this a Multichannel MP3 implementation?) > This is not not a Multichannel MP3 implementation. > Some details related to the codec are available on the web page > (whitepaper, etc). > In general some additional information is stored in the mp3 stream, > however the information is not related to mp3 encoding. > It is in this way similar to mp3surround, where the multichannel panorama > is reconstructed based on merged to stereo (or mono) multichannel stream > and some phase information on how to reconstruct the full 5.1 sound during > the decoding process are placed between mp3 frames. Frauenhofer stores energy related spectral > information, which does not allow phase to be properly reconstructed. > And phase is very important in surround perception... Thus our side > stream (stored "between" mp3 frames) contains energy + phase info. You also state that the projects uses code from AC3Enc and LAME. You realise that these are LGPL projects and can only be linked to in a certain way? The rules are quite strict...(such as releasing object files of your project when not linking dynamically to the libraries as in Aud-Xs case, etc) > I must talk to the software guy who did the implementation. > But thank you for suggestion! I will make sure that everything is legal. Last edited by 3dsnar; 9th January 2006 at 18:06. |
9th January 2006, 18:20 | #4 | Link |
Moderator
Join Date: Oct 2001
Location: England
Posts: 3,285
|
Thanks
Don't know how I missed the whitepaper ( http://www.aud-x.com/images/stories/...whitepaper.pdf ). I did look for something of that nature but didn't spot it. Good luck with your project -Nic |
9th January 2006, 18:44 | #5 | Link |
retired developer
Join Date: Oct 2002
Location: Canada
Posts: 8,978
|
That would be cool in BeSweet too, so GUI developers could use itin their own app.
__________________
Detritus Software |
9th January 2006, 19:00 | #6 | Link |
Registered User
Join Date: Dec 2005
Location: Proxima Centauri
Posts: 315
|
We will release some DLLs and info on how to use'em,
necessary for BeSweet and other apps. I hope the project will gain interest among users, but also among developers. If people really interested in including our codec will contact us, we will provide the necessary tools |
9th January 2006, 19:06 | #7 | Link |
retired developer
Join Date: Oct 2002
Location: Canada
Posts: 8,978
|
Well, I wouldn't mind including your codec in RealAnime 4 (via beSweet)
__________________
Detritus Software |
9th January 2006, 19:21 | #10 | Link |
brainless
Join Date: Mar 2003
Location: Germany
Posts: 3,653
|
besides the graphs of the computated difference of the Audio compressors, are there representative results from listening (ABX) tests?
__________________
Don't forget the 'c'! Don't PM me for technical support, please. |
9th January 2006, 19:28 | #12 | Link |
retired developer
Join Date: Oct 2002
Location: Canada
Posts: 8,978
|
failed to register audxdshow.ax: error -2147024770
on XP SP2, AMD64 3000+, 1GB DDR400 DC.
__________________
Detritus Software |
9th January 2006, 19:29 | #13 | Link |
retired developer
Join Date: Oct 2002
Location: Canada
Posts: 8,978
|
Wouldn't your codec be better using HE-AAC instead of MP3?
__________________
Detritus Software |
9th January 2006, 19:36 | #14 | Link |
Registered User
Join Date: Dec 2005
Location: Proxima Centauri
Posts: 315
|
Yeah. Bugs are possible... This is
first release. Please try to restart your computer and install the codec again. If this will not help, please let me know. ---------------------- AAC issue: Well there are problems with AAC and AVI file container... Although we might do that in the future, because the technology can be based on any audio compression method (including also Ogg Vorbis) This are matters for the future |
9th January 2006, 19:54 | #15 | Link |
retired developer
Join Date: Oct 2002
Location: Canada
Posts: 8,978
|
Sorry I can't restart yet, I'm in the middle of an encoding I will let you know later.
__________________
Detritus Software |
9th January 2006, 20:42 | #16 | Link | |
Moderator
Join Date: Feb 2005
Location: Spain
Posts: 6,890
|
Quote:
|
|
9th January 2006, 23:15 | #17 | Link | |
Life's clearer in 4K UHD
Join Date: Jun 2003
Location: Notts, UK
Posts: 12,219
|
Quote:
We could really do with some more 6Ch capable AAC-HE (and AAC-LC) encoders. Nero has been the driving force for far too long! Cheers
__________________
| I've been testing hardware media playback devices and software A/V encoders and decoders since 2001 | My Network Layout & A/V Gear |
|
|
9th January 2006, 23:26 | #18 | Link |
retired developer
Join Date: Oct 2002
Location: Canada
Posts: 8,978
|
imagine... a 32kbps HE-AAC v2 + PS using their technology
5.1 at 32kbps
__________________
Detritus Software |
10th January 2006, 03:36 | #19 | Link |
Registered User
Join Date: Feb 2005
Posts: 76
|
Just thought I’d make mention that the Xvid\DivX 5.1 audio encoding using Aud-X is not limited to DVD’s you have ripped. It also works with as an example a DV home movie that you’ve made a DD5.1 soundtrack for using ursmatl’s V.I stereo to 5.1 VST plugin for Plogue Bidule, and a DD5.1 encoder. This also works with a captured MPEG2 file you've made a DD5.1 soundtrack for. Thanks 3dsnar for your useful tool\codec.
|
Thread Tools | Search this Thread |
Display Modes | |
|
|