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Fraunhofer has begun marketing HD-AAC, ISO MPEG-4 AAC-LC & SLS
rpp3po
post Jan 10 2010, 20:35
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Fraunhofer IIS just presented HD-AAC at the Consumer Electronics Show in Las Vegas. It's a hybrid format which can be played back as conventional AAC on legacy devices. HD-AAC capable devices also read the SLS layer and get a lossless reconstruction of the original signal.

More details here.

MPEG-4 SLS is not really news, but Fraunhofer finally seems to be pushing this out to a broader public now. Decoders are supposed to be ready within 12 weeks for literally all current (mobile and stationary) hardware platforms.

Seems to be a great product, I hope Apple picks this up!

It's probably not necessarily better than other hybrid solutions. But it would be nice if it got enough momentum to be implemented into the top line of mobile players and their ecosystems. For example, if you would be able buy HD-AAC in the iTMS and then let it copy just the AAC-LC part to your iPod.

This post has been edited by rpp3po: Jan 10 2010, 22:35
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lvqcl
post Nov 27 2011, 19:31
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QUOTE
I haven't found any SLS encoded file yet


Link here: http://wiki.multimedia.cx/index.php?title=MPEG-4_SLS
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darkbyte
post Nov 27 2011, 20:21
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QUOTE (lvqcl @ Nov 27 2011, 20:31) *
QUOTE
I haven't found any SLS encoded file yet


Link here: http://wiki.multimedia.cx/index.php?title=MPEG-4_SLS


Thanks! wink.gif

And i found the reference SLS encoder-decoder there, yipee! laugh.gif
I've tried to compile it with Visual C++ Express 2008, but i got a bunch of errors. Can somebody compile it into exe please? unsure.gif


Here's the output of MP4Box on a randomly picked SLS mp4:

CODE
c:\MP4Box>MP4Box.exe -info sls2100_aot02_048_16.mp4
* Movie Info *
        Timescale 48000 - Duration 00:00:48.575
        Fragmented File no - 2 track(s)
        File Brand mp42 - version 0
        Created: GMT Thu Oct 06 08:35:02 2011

File has no MPEG4 IOD/OD

Track # 1 Info - TrackID 1 - TimeScale 48000 - Duration 00:00:48.618
Track is present in Root OD
Media Info: Language "Undetermined" - Type "soun:mp4a" - 2279 samples
MPEG-4 Config: Audio Stream - ObjectTypeIndication 0x40
MPEG-4 Audio AAC LC - 2 Channel(s) - SampleRate 48000
Self-synchronized

Track # 2 Info - TrackID 2 - TimeScale 48000 - Duration 00:00:48.618
Track is present in Root OD
Media Info: Language "Undetermined" - Type "soun:m4ae" - 2279 samples
Audio Track - Sample Rate 48000 - 2 channel(s)
        Vendor code "...." - Version 0 - revision 0
        Codec configuration data size: 53 bytes


Looks like i was right about the secondary track smile.gif Although it doesn't know what the secondary track is, but i guess soun:m4ae is the SLS layer.

This post has been edited by darkbyte: Nov 27 2011, 20:58
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Posts in this topic
- rpp3po   Fraunhofer has begun marketing HD-AAC   Jan 10 2010, 20:35
- - Brent   You know, if only for the ridiculous ease of use w...   Jan 10 2010, 20:48
- - mixminus1   QUOTE (rpp3po @ Jan 10 2010, 11:35) For e...   Jan 10 2010, 20:55
|- - /mnt   Hopefully this might work better then the HD Mp3 f...   Jan 10 2010, 21:18
|- - C.R.Helmrich   QUOTE (mixminus1 @ Jan 10 2010, 21:55) Th...   Jan 10 2010, 23:32
|- - Garf   QUOTE (C.R.Helmrich @ Jan 10 2010, 23:32)...   Jan 11 2010, 00:28
|- - C.R.Helmrich   QUOTE (Garf @ Jan 11 2010, 01:28) One can...   Jan 11 2010, 00:47
||- - SebastianG   QUOTE (C.R.Helmrich @ Jan 11 2010, 00:47)...   Jan 11 2010, 15:16
|- - odyssey   Garf: Will Nero release an encoder capable of util...   Jan 11 2010, 09:51
||- - Sebastian Mares   QUOTE (odyssey @ Jan 11 2010, 09:51) Garf...   Jan 11 2010, 12:24
||- - odyssey   QUOTE (Sebastian Mares @ Jan 11 2010, 12...   Jan 11 2010, 13:00
||- - Garf   QUOTE (odyssey @ Jan 11 2010, 13:00) Wasn...   Jan 11 2010, 14:59
||- - odyssey   QUOTE (Garf @ Jan 11 2010, 14:59) I quit ...   Jan 11 2010, 15:59
|- - KFal   QUOTE (Brent @ Jan 10 2010, 21:48) You kn...   Jan 11 2010, 13:10
|- - mixminus1   QUOTE (Garf @ Jan 10 2010, 15:28) MPEG4 S...   Jan 11 2010, 16:55
|- - rpp3po   Both the HD-AAC and the sliced LC-AAC file can be ...   Jan 11 2010, 17:21
|- - Garf   QUOTE (rpp3po @ Jan 11 2010, 17:21) Both ...   Jan 11 2010, 17:42
|- - mixminus1   Yep, got it, thanks!   Jan 11 2010, 19:17
|- - rpp3po   While everything you write is correct, I think we ...   Jan 11 2010, 19:28
|- - rpp3po   I think, if Fraunhofer wants this to be a success,...   Jan 11 2010, 20:34
|- - Garf   QUOTE (rpp3po @ Jan 11 2010, 20:34) I thi...   Jan 11 2010, 21:48
||- - benski   QUOTE (Garf @ Jan 11 2010, 15:48) QUOTE (...   Jan 11 2010, 21:50
||- - rpp3po   QUOTE (Garf @ Jan 11 2010, 21:48) I'm...   Jan 11 2010, 23:41
||- - Garf   QUOTE (rpp3po @ Jan 11 2010, 23:41) QUOTE...   Jan 11 2010, 23:52
|- - Mike Giacomelli   QUOTE (rpp3po @ Jan 11 2010, 14:34) Micro...   Jan 11 2010, 21:52
- - andy o   Will be interesting to see how this affects the au...   Jan 11 2010, 10:58
|- - odyssey   QUOTE (andy o @ Jan 11 2010, 10:58) Peopl...   Jan 11 2010, 13:03
- - Kvanto   Does anyone tried to compile reference mpeg4 sls e...   Feb 18 2010, 03:32
- - Larson   http://www.youtube.com/watch?v=JESMLDu_AyM...playe...   Mar 11 2010, 13:02
- - darkbyte   As i've read somewhere the next version of Win...   Nov 14 2011, 18:16
- - menno   Nero 11 includes HD-AAC encoding (in Recode).   Nov 14 2011, 19:21
- - darkbyte   QUOTE (menno @ Nov 14 2011, 20:21) Nero 1...   Nov 14 2011, 20:58
- - menno   All Nero 11 applications will be able to playback/...   Nov 14 2011, 21:23
- - darkbyte   QUOTE (menno @ Nov 14 2011, 22:23) All Ne...   Nov 14 2011, 22:20
- - Ljubo44   How to convert audio file with nero recode 11. The...   Nov 26 2011, 02:40
- - Sebastian Mares   Works only when encoding video files AFAIK.   Nov 26 2011, 09:06
- - darkbyte   I hope that the command line encoder gets updated ...   Nov 27 2011, 18:08
|- - benski   QUOTE (darkbyte @ Nov 27 2011, 13:08) I g...   Mar 14 2012, 18:58
- - lvqcl   QUOTE I haven't found any SLS encoded file yet...   Nov 27 2011, 19:31
|- - darkbyte   QUOTE (lvqcl @ Nov 27 2011, 20:31) QUOTE ...   Nov 27 2011, 20:21
- - Ljubo44   I have problem with: libtsp.lib , in mpeg4sls/impo...   Nov 29 2011, 04:16
- - darkbyte   Any success since then Ljubo44?   Dec 10 2011, 17:49
- - Ljubo44   This is hard for compiling, please heelp. any with...   Mar 14 2012, 02:18
|- - nu774   QUOTE (Ljubo44 @ Mar 14 2012, 10:18) This...   Mar 14 2012, 09:37
- - eahm   QUOTE (rpp3po @ Jan 11 2010, 11:28) Reque...   Mar 14 2012, 10:11
- - darkbyte   QUOTE (benski @ Mar 14 2012, 19:58) QUOTE...   Aug 5 2012, 23:24
- - infoleather   These generated files to LC-AAC playback on any de...   Aug 29 2012, 06:17


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