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Nero Releases FREE Reference Quality MPEG-4 Audio Encoder, Nero Releases Command Line MPEG-4 & 3GPP AAC Solution
Ivan Dimkovic
post May 4 2006, 15:13
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Nero MPEG4 developer


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I am pleased to announce the launch of FREE Reference Quality MPEG-4 Audio solution from Nero, in the command line form!

* First in the world FREE 2-Pass MPEG-4 AAC Encoder
* Support for mono, stereo and multichannel encodings
* Support for sampling rates up to 96 kHz, up to 32-bit Floating-Point PCM input
* Compression Ratios ranging from ultra high (58 CDs fit on one!) to High-End Audio (2.5:1), for absolutely perfect audiophile encodings
* Support for Embedded Album Art (Covers, Booklets, Lyrics!)
* Store Entire Audio Album in a Single .mp4 File with all the Features of an Audio CD embedded inside, but at a fraction of the space!
* Reference Quality MPEG-4 Audio Codec
* Fully Compatible with the Latest Version of the State-of-the-art MPEG-4 Audio Standard (LC-AAC, HE-AAC and HE-AAC v2)
http://www.nero.com/nerodigital/eng/Nero_Digital_Audio.html

This post has been edited by Garf: May 7 2006, 19:46
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ozmosis82
post May 4 2006, 21:43
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To Garf or Ivan:

I guess I'm just looking to clarification as to why 2-pass isn't a good idea with VBR. I know you mentioned video codecs doing 2-pass and its association with ABR. I also know that VBR should automatically figure the best way to allocate bits... I guess maybe I'm just looking for re-inforcement as to why I should opt out of using 2-pass (aside from longer encode times).

Cheers
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Garf
post May 4 2006, 22:06
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QUOTE (ozmosis82 @ May 4 2006, 10:43 PM) *
To Garf or Ivan:

I guess I'm just looking to clarification as to why 2-pass isn't a good idea with VBR. I know you mentioned video codecs doing 2-pass and its association with ABR. I also know that VBR should automatically figure the best way to allocate bits... I guess maybe I'm just looking for re-inforcement as to why I should opt out of using 2-pass (aside from longer encode times).

Cheers


2-pass is useful when you want to do an optimal bitrate allocation and you have to meet a specific average bitrate (or fixed size, which is the same thing). The first pass analyses the song with the psychoacoustics engine, and finds out where the hard and easy parts lie. The second pass uses this information to decide how to allocate the fixed number of bits it has.

The whole scheme does not make any sense when the encoder can spend as much bits as it needs (VBR mode).

(This whole thing made my think about ways to use the fact that with 2 pass mode we can see ahead further than in normal encoding, and there might actually be ways to exploit this, but they are most certainly not implemented let alone tested in the current encoder. For all I know, using 2 pass VBR with the current binary might make your Britney Spears tracks come out as Madonna, or something).


QUOTE (DARcode @ May 4 2006, 10:52 PM) *
Thank you very much for making this available for free!

Now onto being pesky: included readme.txt files says "Package build date: Apr 27 2006" while console output states "Package build date: May 1 2006". tongue.gif


We prepared it last week, but when it wasn't up on the website this weekend I sent a new encoder with further improvements (and apparently, not a clear enough indication that, yes, the SSE2 build is faster, but no, it's not gonna work on all machines... sad.gif sorry people). The commandline options didn't change in those few days.
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Posts in this topic
- Ivan Dimkovic   Nero Releases FREE Reference Quality MPEG-4 Audio Encoder   May 4 2006, 15:13
- - sony666   first thanks and wow checking out edit: fir...   May 4 2006, 15:15
- - yulyo!   thank You Ivan. i do not know how to work with com...   May 4 2006, 15:22
|- - towolf   QUOTE (yulyo! @ May 4 2006, 04:22 PM)...   May 4 2006, 15:34
- - sony666   it crashes whatever I throw at it after showing th...   May 4 2006, 15:26
- - Ivan Dimkovic   QUOTE edit: first run without comandline parameter...   May 4 2006, 15:27
|- - sony666   QUOTE (Ivan Dimkovic @ May 4 2006, 04:27 ...   May 4 2006, 15:29
- - Ivan Dimkovic   Okay thanks for the info - our team will investiga...   May 4 2006, 15:33
- - Ivan Dimkovic   Linux is actually on the way   May 4 2006, 15:44
- - sony666   This is a fantastic release and could be the one f...   May 4 2006, 15:51
- - kurtnoise   Many thanks to the Nero devs...Great stuff btw. ...   May 4 2006, 15:52
|- - Garf   QUOTE (kurtnoise @ May 4 2006, 04:52 PM) ...   May 4 2006, 17:28
|- - kurtnoise   QUOTE (Garf @ May 4 2006, 06:28 PM) QUOTE...   May 4 2006, 17:50
- - halb27   Just tried. It didn't crash, but it doesn...   May 4 2006, 16:00
|- - Pasqui   QUOTE (halb27 @ May 4 2006, 05:00 PM) Jus...   May 4 2006, 16:56
|- - Garf   QUOTE (Pasqui @ May 4 2006, 05:56 PM) QUO...   May 4 2006, 17:23
- - toology   This looks really promising! Will this impleme...   May 4 2006, 16:01
|- - Garf   QUOTE (toology @ May 4 2006, 05:01 PM) Th...   May 4 2006, 17:39
- - enry2k   It is wonderful gift!   May 4 2006, 16:08
- - Leo 69   Can't encode on Athlon XP here. I see an error   May 4 2006, 16:15
- - sizetwo   Yay Will check it out right away. Sounds promi...   May 4 2006, 16:19
- - Synthetic Soul   Erroring here as well; it hangs for a while and th...   May 4 2006, 16:43
- - ozmosis82   Hurrah Ivan! I'm definitely excited about...   May 4 2006, 17:09
- - jimhaddon   works great with mine! P4 @ 4.2Ghz, XP Pro Q...   May 4 2006, 17:13
- - Leo 69   Pasqui QUOTE afaik, SS2 is supported No, it isn...   May 4 2006, 17:20
- - Squeller   I've got some problems with the command line f...   May 4 2006, 17:27
|- - jimhaddon   QUOTE (Squeller @ May 4 2006, 05:27 PM) 1...   May 4 2006, 17:36
|- - Julien   QUOTE (Squeller @ May 4 2006, 06:27 PM) I...   May 4 2006, 17:41
||- - Garf   QUOTE (Julien @ May 4 2006, 06:41 PM) QUO...   May 4 2006, 17:44
|||- - Julien   QUOTE (Garf @ May 4 2006, 06:44 PM) QUOTE...   May 4 2006, 17:54
|||- - rosshmusic   QUOTE QUOTE QUOTE I'm using "-q 0.6 -if...   May 4 2006, 18:29
||- - Squeller   QUOTE (Julien @ May 4 2006, 08:41 AM) I...   May 4 2006, 17:50
|- - Garf   QUOTE (Squeller @ May 4 2006, 06:27 PM) P...   May 4 2006, 18:02
||- - edekba   QUOTE (Garf @ May 4 2006, 10:02 AM) QUOTE...   May 4 2006, 18:17
||- - haregoo   QUOTE (edekba @ May 5 2006, 02:17 AM) I...   May 4 2006, 18:20
|||- - edekba   QUOTE (haregoo @ May 4 2006, 10:20 AM) QU...   May 4 2006, 18:26
|||- - Garf   QUOTE (edekba @ May 4 2006, 07:26 PM) QUO...   May 4 2006, 18:38
||- - Garf   QUOTE I guess that means users should try out diff...   May 4 2006, 18:22
|- - Sebastian Mares   QUOTE (Squeller @ May 4 2006, 06:27 PM) 1...   May 4 2006, 18:06
- - Dzamburu   I aslo don't have sse2 instruction and get sam...   May 4 2006, 17:34
|- - goodnews   How about adding an option to the AAC Encoder util...   May 4 2006, 17:41
|- - Garf   QUOTE (goodnews @ May 4 2006, 06:41 PM) H...   May 4 2006, 17:43
- - ozmosis82   QUOTE (jimhaddon @ May 4 2006, 11:13 AM) ...   May 4 2006, 17:35
- - Digga   thank you developers! this is a nice and muc...   May 4 2006, 17:40
- - Garf   Note that the encoder accepts data from standard i...   May 4 2006, 17:41
- - ozmosis82   QUOTE (jimhaddon @ May 4 2006, 11:36 AM) ...   May 4 2006, 17:43
- - ozmosis82   QUOTE (goodnews @ May 4 2006, 11:41 AM) H...   May 4 2006, 17:45
- - jmartis   It will encode on my computer but doesnt write hea...   May 4 2006, 18:11
|- - Garf   QUOTE (jmartis @ May 4 2006, 07:11 PM) It...   May 4 2006, 18:14
|- - jmartis   QUOTE (Garf @ May 4 2006, 07:14 PM) QUOTE...   May 4 2006, 18:22
- - Dzamburu   what is minimum bitrate for 5.1 encoding   May 4 2006, 18:19
- - AtaqueEG   QUOTE (Ivan Dimkovic @ May 4 2006, 09:13 ...   May 4 2006, 18:53
|- - Garf   QUOTE Can't download. Any mirrors? The server...   May 4 2006, 18:58
|- - AtaqueEG   QUOTE (Garf @ May 4 2006, 12:58 PM) The s...   May 4 2006, 19:16
|- - Garf   QUOTE (AtaqueEG @ May 4 2006, 08:16 PM) Q...   May 4 2006, 19:41
|- - AtaqueEG   QUOTE (Garf @ May 4 2006, 01:41 PM) http:...   May 4 2006, 19:44
|- - halb27   QUOTE (AtaqueEG @ May 4 2006, 08:44 PM) ....   May 4 2006, 21:06
- - ozmosis82   QUOTE (Garf @ May 4 2006, 12:22 PM) You c...   May 4 2006, 19:01
|- - edekba   QUOTE (ozmosis82 @ May 4 2006, 11:01 AM) ...   May 4 2006, 21:31
|- - ozmosis82   QUOTE (edekba @ May 4 2006, 03:31 PM) yea...   May 4 2006, 21:35
|- - edekba   QUOTE (ozmosis82 @ May 4 2006, 01:35 PM) ...   May 4 2006, 21:44
|- - ozmosis82   QUOTE (edekba @ May 4 2006, 03:44 PM) i d...   May 4 2006, 21:47
- - ssjkakaroto   i've have waited a long time for the aac encod...   May 4 2006, 19:13
- - MuncherOfSpleens   I'm assuming that the -q setting is to be used...   May 4 2006, 19:19
|- - Garf   QUOTE (MuncherOfSpleens @ May 4 2006, 08...   May 4 2006, 19:24
- - senab   Great stuff lads. Been needing a good quality gap...   May 4 2006, 19:45
- - brumal   Works wonderfully on my P4. Many thanks to the Ner...   May 4 2006, 19:56
- - Niphlod   perhaps bittorrent sources will resolve the proble...   May 4 2006, 20:14
|- - MuncherOfSpleens   QUOTE (Niphlod @ May 4 2006, 03:14 PM) pe...   May 4 2006, 20:56
|- - MuncherOfSpleens   Sorry. I didn't know it was illegal. I'l...   May 4 2006, 21:05
- - br0adband   Thanks to Ivan and the whole Nero team for this re...   May 4 2006, 20:47
|- - Garf   QUOTE (br0adband @ May 4 2006, 09:47 PM) ...   May 4 2006, 20:59
- - Ivan Dimkovic   AMD problem has been solved, but it will take unti...   May 4 2006, 20:49
- - ozmosis82   QUOTE (br0adband @ May 4 2006, 02:47 PM) ...   May 4 2006, 20:58
- - askoff   Thanks Nero Audio team. This is a realy nice surpr...   May 4 2006, 20:58
- - Ivan Dimkovic   Actually, the bug was not AMD-related, but related...   May 4 2006, 21:03
- - ozmosis82   Is there a change log for Nero's AAC encoder? ...   May 4 2006, 21:05
|- - Garf   QUOTE (ozmosis82 @ May 4 2006, 10:05 PM) ...   May 4 2006, 21:08
- - Ivan Dimkovic   QUOTE Is there a change log for Nero's AAC enc...   May 4 2006, 21:07
- - ozmosis82   QUOTE (Ivan Dimkovic @ May 4 2006, 03:07 ...   May 4 2006, 21:13
- - br0adband   No idea why this is happening (just for me it seem...   May 4 2006, 21:23
|- - Garf   QUOTE (br0adband @ May 4 2006, 10:23 PM) ...   May 4 2006, 21:34
- - AlexanderTG   If I encode my speak audio files with this, is it ...   May 4 2006, 21:27
|- - Garf   QUOTE (AlexanderTG @ May 4 2006, 10:27 PM...   May 4 2006, 21:31
|- - IgorC   It's good to have floating point bitrate. Now ...   May 4 2006, 21:38
|- - Garf   QUOTE (IgorC @ May 4 2006, 10:38 PM) It...   May 4 2006, 21:41
|- - IgorC   QUOTE (Garf @ May 4 2006, 12:41 PM) QUOTE...   May 4 2006, 21:43
- - chichazor   Any mirror to download it? The ftp6 url don't ...   May 4 2006, 21:42
|- - AtaqueEG   QUOTE (chichazor @ May 4 2006, 03:42 PM) ...   May 4 2006, 21:47
- - ozmosis82   To Garf or Ivan: I guess I'm just looking to ...   May 4 2006, 21:43
|- - Garf   QUOTE (ozmosis82 @ May 4 2006, 10:43 PM) ...   May 4 2006, 22:06
- - Ivan Dimkovic   QUOTE I guess I'm just looking to clarificatio...   May 4 2006, 21:51
|- - ozmosis82   QUOTE (Ivan Dimkovic @ May 4 2006, 03:51 ...   May 4 2006, 21:54
- - DARcode   Thank you very much for making this available for ...   May 4 2006, 21:52
- - br0adband   I'd say 2 pass audio encoding is a bit ridicul...   May 4 2006, 21:58
|- - ozmosis82   QUOTE (br0adband @ May 4 2006, 03:58 PM) ...   May 4 2006, 22:08
- - Ivan Dimkovic   QUOTE I'd say 2 pass audio encoding is a bit r...   May 4 2006, 22:01
- - kwanbis   Thanks for the gift. I would include the configura...   May 4 2006, 22:44
- - br0adband   No worries, didn't want my post to come across...   May 4 2006, 22:47
- - chrisgeleven   Is there any shot of this being available for us O...   May 4 2006, 22:54
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