HydrogenAudio

Lossy Audio Compression => AAC => AAC - General => Topic started by: rpp3po on 2010-01-10 19:35:47

Title: Fraunhofer has begun marketing HD-AAC
Post by: rpp3po on 2010-01-10 19:35:47
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 (http://www.iis.fraunhofer.de/EN/bf/amm/products/hdaac.jsp).

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.
Title: Fraunhofer has begun marketing HD-AAC
Post by: Brent on 2010-01-10 19:48:38
You know, if only for the ridiculous ease of use when managing my iPod. Hope Apple will use this!
Title: Fraunhofer has begun marketing HD-AAC
Post by: mixminus1 on 2010-01-10 19:55:02
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.

...or just buy ALAC files and then have iTunes encode to AAC on-the-fly when you sync your iPod (like it already can do with the shuffle).

This would seem to be the simpler solution as it utilizes an existing format, allows the end user to choose the AAC bitrate, and should also be more efficient from a downloading and storage standpoint (assuming the HD-AAC files would be larger than ALAC due to their hybrid nature).
Title: Fraunhofer has begun marketing HD-AAC
Post by: /mnt on 2010-01-10 20:18:10
Hopefully this might work better then the HD Mp3 format.

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.

...or just buy ALAC files and then have iTunes encode to AAC on-the-fly when you sync your iPod (like it already can do with the shuffle).


Sadly it only transcodes with the shuffle, the feature would be very usefull for low storage iPods such as the current 8gb iPod Touch (a shameless rip-off from Apple) and iPhones; which would make it easy for Apple to sell their music in ALAC through iTMS. iTunes transcodes MP4 videos into a compatible format on the fly though.
Title: Fraunhofer has begun marketing HD-AAC
Post by: C.R.Helmrich on 2010-01-10 22:32:55
This would seem to be the simpler solution as it utilizes an existing format, allows the end user to choose the AAC bitrate, and should also be more efficient from a downloading and storage standpoint (assuming the HD-AAC files would be larger than ALAC due to their hybrid nature).

I heard/read somewhere that the compression performance of HD-AAC is supposed to be on par with FLAC and similar dedicated lossless coders.

Chris
Title: Fraunhofer has begun marketing HD-AAC
Post by: Garf on 2010-01-10 23:28:48
I heard/read somewhere that the compression performance of HD-AAC is supposed to be on par with FLAC and similar dedicated lossless coders.

Chris


If we don't include speed into the comparison. But yes, compression ratio is OK. One can wonder what the use of MPEG4 ALS is once you have SLS.

MPEG4 SLS (HD-AAC) will win if you need to transcode, because it only needs minimal processing to "slice" the stream to the bitrate you want, and the AAC or AAC+SLS layers are backwards compatible to LC-AAC.
Title: Fraunhofer has begun marketing HD-AAC
Post by: C.R.Helmrich on 2010-01-10 23:47:25
One can wonder what the use of MPEG4 ALS is once you have SLS.

Good question

The more I think of it: with HD-AAC gaining in popularity, I think LossyWAV will have a very powerful contender.

Chris
Title: Fraunhofer has begun marketing HD-AAC
Post by: odyssey on 2010-01-11 08:51:27
Garf: Will Nero release an encoder capable of utilizing this?
Title: Fraunhofer has begun marketing HD-AAC
Post by: andy o on 2010-01-11 09:58:29
Will be interesting to see how this affects the audiophile landscape if it becomes popular. The DTS-HD Master Audio format (bluray) works very similarly, and the inability to reverse engineer and decode the MA extension properly on the PC has had many people paranoid that their sound is not "as good as it could be" because they're probably hearing the DTS "core". People started doubting that they were hearing decoded full DTS-HD MA even though the programs (commercial bluray players like TotalMedia Theatre and PowerDVD) were saying that they were decoding it.
Title: Fraunhofer has begun marketing HD-AAC
Post by: Sebastian Mares on 2010-01-11 11:24:32
Garf: Will Nero release an encoder capable of utilizing this?


I doubt Garf can answer this question not being a Nero employee.
Title: Fraunhofer has begun marketing HD-AAC
Post by: odyssey on 2010-01-11 12:00:40
Garf: Will Nero release an encoder capable of utilizing this?


I doubt Garf can answer this question not being a Nero employee.

Wasn't he previously? I don't remember too well  Who is? (you maybe?)
Title: Fraunhofer has begun marketing HD-AAC
Post by: odyssey on 2010-01-11 12:03:28
People started doubting that they were hearing decoded full DTS-HD MA even though the programs (commercial bluray players like TotalMedia Theatre and PowerDVD) were saying that they were decoding it.

So why would they need the HD, if they can't hear the difference anyway?
Title: Fraunhofer has begun marketing HD-AAC
Post by: KFal on 2010-01-11 12:10:30
You know, if only for the ridiculous ease of use when managing my iPod. Hope Apple will use this!


MPEG4 SLS (HD-AAC) will win if you need to transcode, because it only needs minimal processing to "slice" the stream to the bitrate you want, and the AAC or AAC+SLS layers are backwards compatible to LC-AAC.


Yes! I would love such a solution where one only has to manage one file for both archiving and mobile listening purposes.

Title: Fraunhofer has begun marketing HD-AAC
Post by: Garf on 2010-01-11 13:59:59
Wasn't he previously? I don't remember too well  Who is? (you maybe?)


I quit Nero about 3 years ago. I think you want to ask muaddib here, or maybe he'll comment in this thread himself.
Title: Fraunhofer has begun marketing HD-AAC
Post by: SebastianG on 2010-01-11 14:16:33
The more I think of it: with HD-AAC gaining in popularity, I think LossyWAV will have a very powerful contender.

I dunno... It has pros and cons. LossyWAV-like formats are fairly easy to decode. On the other hand LossyWAV's "base layer" is currently not nearly as efficient as AAC (and it never will be). But I think it could perform much better with a simple, good and conservative psychoacoustic model + dynamic noise shaper (I can even offer code for designing and using frequency-warped all-pole lattice filters as noise shaper).

Cheers,
SG
Title: Fraunhofer has begun marketing HD-AAC
Post by: odyssey on 2010-01-11 14:59:55
I quit Nero about 3 years ago.

LOL, I wasn't wrong, just a bit outdated  I'll try him, thanks
Title: Fraunhofer has begun marketing HD-AAC
Post by: mixminus1 on 2010-01-11 15:55:03
MPEG4 SLS (HD-AAC) will win if you need to transcode, because it only needs minimal processing to "slice" the stream to the bitrate you want, and the AAC or AAC+SLS layers are backwards compatible to LC-AAC.

Ah, didn't get that part from the block diagram in the Fraunhofer PDF.

So you can take an HD-AAC file, choose to "slice" it to 256 kb/sec or 128 kb/sec, and either of those resulting files would be playable by any device capable of LC-AAC playback?
Title: Fraunhofer has begun marketing HD-AAC
Post by: rpp3po on 2010-01-11 16:21:33
Both the HD-AAC and the sliced LC-AAC file can be played back on a legacy device. The LC-AAC portion of the HD-AAC file is only encoded once, though. So you can only slice a new file out at the bitrate that was originally encoded, e. g. 256 kbit/s. For other bitrates you need to re-encode the lossless data.
Title: Fraunhofer has begun marketing HD-AAC
Post by: Garf on 2010-01-11 16:42:46
Both the HD-AAC and the sliced LC-AAC file can be played back on a legacy device. The LC-AAC portion of the HD-AAC file is only encoded once, though. So you can only slice a new file out at the bitrate that was originally encoded, e. g. 256 kbit/s. For other bitrates you need to re-encode the lossless data.


To clarify, you can only slice out a new file at a higher bitrate than what the LC-AAC part was originally encoded with. So applications of HD-AAC would generally encode the LC-AAC at something lower like 96 or 128kbps, rather than a higher bitrate.

If the LC-AAC part of the file was encoded at 128kbps, you can still slice out a 256kbps HD-AAC file, which would be 128kbps LC-AAC plus 128kbps correction layer. The correction layer is very efficient and the combination could reasonably be compared to a 256kbps LC-AAC file.

The resulting file will play back as a 256kbps file in a HD-AAC player and like 128kbps in a LC-AAC player.

I hope this made it clearer instead of the other way around
Title: Fraunhofer has begun marketing HD-AAC
Post by: mixminus1 on 2010-01-11 18:17:20
Yep, got it, thanks!
Title: Fraunhofer has begun marketing HD-AAC
Post by: rpp3po on 2010-01-11 18:28:15
While everything you write is correct, I think we have used different meanings of "slicing out". There are three types of files:

(http://www.iis.fraunhofer.de/fhg/Images/sls-big_tcm278-137938.gif)


All three can be played back on legacy AAC players without modification. The latter will only access the embedded LC-AAC part, though. While  being compatible that means wasting a lot of space, which one could use otherwise on those devices. So you can strip of all HD-content from an HD-AAC file and just upload the plain LC-AAC part to those devices.

Players with real HD-AAC support can play category 1 & 2 files with all features enabled. Category 2 files are a kind of a cross-breed. They are lossy but one can allocate an arbitrary amount of SLS data for higher quality. Up to 100% when they become category 1 files. So the user can choose exactly how much space he is willing to spend.

Personally, if I would be able to chose options myself, I would not go for a <= 128kbit/s LC-AAC base stream, but for about ~192kbit/s, That's my intended rate for mobile use and I don't expect older iPods ever to get updated for HD-AAC. Partial SLS content would be inaccessible for those. I don't expect category 2 to find broad acceptance anyway.

Request this feature here (http://www.apple.com/feedback/itunesapp.html) (apple.com) if you want HD-AAC support in iTunes! Apple really pays much attention to customer feedback.
Title: Fraunhofer has begun marketing HD-AAC
Post by: rpp3po on 2010-01-11 19:34:14
I think, if Fraunhofer wants this to be a success, they must have an unlicensed encoder and decoder out in the wild soon. I don't think that they can otherwise build enough momentum while the technology is still hot. The market is pretty saturated with formats. FLAC has already convinced some bigger labels. And the little extra-scalability-feature won't turn the tide of the world just because they are Fraunhofer and had success once.

Microsoft and Adobe have build monopolies on business facts like that. But I don't have much hope for Fraunhofer. Those institutions usually don't have the organizational structure, where a decision like that can really be made. Scientists are used to having to cover their asses consistently for every step into the unknown. And who would voluntarily take responsibility for a step like that. By contrast for real businesses like MS and Adobe taking risks is routine business.
Title: Fraunhofer has begun marketing HD-AAC
Post by: Garf on 2010-01-11 20:48:14
I think, if Fraunhofer wants this to be a success, they must have an unlicensed encoder and decoder out in the wild soon.


I'm not sure what you mean by unlicensed, but MPEG 4 SLS is an ISO standard and can be implemented by anyone. No need for Fraunhofer for that. They're just one firm that implemented it, and try to sell their codec which is named HD-AAC. Just like the HE-AAC standard was sold by Coding Technologies as aacPlus.

This standard is probably covered by a boatload of patents, and will for sure be covered by those for LC-AAC. Fraunhofer doesn't have any particular decision power about how they will be licensed.
Title: Fraunhofer has begun marketing HD-AAC
Post by: benski on 2010-01-11 20:50:42
I think, if Fraunhofer wants this to be a success, they must have an unlicensed encoder and decoder out in the wild soon.


I'm not sure what you mean by unlicensed, but MPEG 4 SLS is an ISO standard and can be implemented by anyone. No need for Fraunhofer for that. They're just one firm that implemented it, and try to sell their codec which is named HD-AAC. Just like the HE-AAC standard was sold by Coding Technologies as aacPlus.

This standard is probably covered by a boatload of patents, and will for sure be covered by those for LC-AAC. Fraunhofer doesn't have any particular decision power about how they will be licensed.


http://www.vialicensing.com/licensing/SLS_fees.cfm (http://www.vialicensing.com/licensing/SLS_fees.cfm)
Title: Fraunhofer has begun marketing HD-AAC
Post by: saratoga on 2010-01-11 20:52:47
Microsoft and Adobe have build monopolies on business facts like that. But I don't have much hope for Fraunhofer. Those institutions usually don't have the organizational structure, where a decision like that can really be made. Scientists are used to having to cover their asses consistently for every step into the unknown. And who would voluntarily take responsibility for a step like that. By contrast for real businesses like MS and Adobe taking risks is routine business.


I tend to agree.  MS and Apple have very little reason to support something like this, so its hard to see it catching on.

Actually no one in the business of selling hardware and charging more for larger storage has much reason to hope scalable encoding succeeds.  Much better to try and market people pure lossless formats and up-sell them on larger capacity, higher margin hardware.
Title: Fraunhofer has begun marketing HD-AAC
Post by: rpp3po on 2010-01-11 22:41:59
I'm not sure what you mean by unlicensed, but MPEG 4 SLS is an ISO standard and can be implemented by anyone.


I'm not going to implement it, are you? I'm talking about their software, a command line encoder and decoder for example, that everyone can play around with. A frontend here, a Foobar wrapper plugin there... Let people play freely with it. Until it doesn't get too commercial you can allow stuff to stay beneath your radar and let it build your momentum. When you have reached sufficient market share, you can still tighten your policies.
Title: Fraunhofer has begun marketing HD-AAC
Post by: Garf on 2010-01-11 22:52:34
I'm not sure what you mean by unlicensed, but MPEG 4 SLS is an ISO standard and can be implemented by anyone.


I'm not going to implement it, are you?


If it wasn't patented up the wazoo with royalties asked even for free implementations, that might happen (by me or anyone, for that matter).

As it is now, why bother?
Title: Fraunhofer has begun marketing HD-AAC
Post by: Kvanto on 2010-02-18 02:32:49
Does anyone tried to compile reference mpeg4 sls encoder? It probably crappy, but still interesting to see how well its result backward compatible with existing software/hardware etc.
Title: Fraunhofer has begun marketing HD-AAC
Post by: Larson on 2010-03-11 12:02:00
http://www.youtube.com/watch?v=JESMLDu_AyM...player_embedded (http://www.youtube.com/watch?v=JESMLDu_AyM&feature=player_embedded)

i didn't see this video,HD-AAC at CES 2010.

I wonder if Apple will use this. This HD-AAC may be a good "universal" lossless format supported natively on all platforms,both Windows and Mac OS (etcs) since they support AAC. We have to wait and see if this encoder appears in some application. I would love flac to be the universal lossless though,but as far as we go there is no native support from both Microsoft and Apple and good part of hardware vendors,by now.
Title: Fraunhofer has begun marketing HD-AAC
Post by: darkbyte on 2011-11-14 17:16:21
As i've read somewhere the next version of Winamp may include a HD-AAC encoder from Fraunhofer. Are there any sources where i can read about when will the next version of Winamp released?
Title: Fraunhofer has begun marketing HD-AAC
Post by: menno on 2011-11-14 18:21:36
Nero 11 includes HD-AAC encoding (in Recode).
Title: Fraunhofer has begun marketing HD-AAC
Post by: darkbyte on 2011-11-14 19:58:39
Nero 11 includes HD-AAC encoding (in Recode).

Are there any plans to make this available in the CLI AAC encoder?

Also is there any player which supports the direct playback?
Title: Fraunhofer has begun marketing HD-AAC
Post by: menno on 2011-11-14 20:23:00
All Nero 11 applications will be able to playback/decode the HD-AAC files. Not sure about any other software.
We're looking into releasing this for the CLI encoder as well.
Title: Fraunhofer has begun marketing HD-AAC
Post by: darkbyte on 2011-11-14 21:20:55
All Nero 11 applications will be able to playback/decode the HD-AAC files. Not sure about any other software.
We're looking into releasing this for the CLI encoder as well.

That's awesome, thank you! Can't wait to test it
Title: Fraunhofer has begun marketing HD-AAC
Post by: Ljubo44 on 2011-11-26 01:40:28
How to convert audio file with nero recode 11. There is option for HD-AAC but its impossible to import audio files even wav. ?
Title: Fraunhofer has begun marketing HD-AAC
Post by: Sebastian Mares on 2011-11-26 08:06:25
Works only when encoding video files AFAIK.
Title: Fraunhofer has begun marketing HD-AAC
Post by: darkbyte on 2011-11-27 17:08:45
I hope that the command line encoder gets updated for HD-AAC support in the near future.
menno: Can we get an estimate about this? We are eagerly waiting for it

I guess foobar2000 and/or Winamp doesn't support HD-AAC out of the box so we have to wait for a decoder update there also.

I'm in the middle of a dillema to convert my collection of FLAC's into a hybrid format because i like to keep the lossless base but i'm also listening to a lots of music on my portable player where the lossless version is an overkill. And i don't like to organise the same files both in lossless and lossy format. There's actually three choices at the moment:

- WavPack: this works already, but the lossy filesizes are imo a bit too big for portable use (if i go with the recommended 384kbps setting). I've tried 256kbps but i can hear the added hiss what the lossy mode produces, mostly with electronic music. Maybe it could better if lossyWAV and WavPack gets integrated more tightly.

- mp3HD: you can do this already because there's a command line encoder in the Fraunhofer package. However it would be better to use LAME as the base mp3 encoder (better VBR quality), but i guess this'll never happen because the closed technical details. Also currently most of the players destroying the correction data on an ID3v2 tag rewrite which is sad. Even the format is not too fortunate because the correction part is stored in the tags so the upper limit is 256MB which is simply not enough for eg. an hour long continous mix. Also i don't know about a tool which can quickly copy the lossy part of the mp3HD file with the meta, skipping the correction part.

- HD-AAC: This seems to be the best choice. Lossy part can be high quality on relatively small bitrates (eg. Nero q0.5 @175kbps is fine in most situations) but i can keep the lossless version at once. I haven't found any SLS encoded file yet but i guess the SLS part gets stored in an additional MP4 track, so one can quickly remove it with mp4box using remuxing, keeping everything else. It's not even too hard to write a tool for this on my own.

HD-AAC would be my choice although there's no encoders and decoders out yet in the public
Title: Fraunhofer has begun marketing HD-AAC
Post by: lvqcl on 2011-11-27 18:31:12
Quote
I haven't found any SLS encoded file yet


Link here: http://wiki.multimedia.cx/index.php?title=MPEG-4_SLS (http://wiki.multimedia.cx/index.php?title=MPEG-4_SLS)
Title: Fraunhofer has begun marketing HD-AAC
Post by: darkbyte on 2011-11-27 19:21:03
Quote
I haven't found any SLS encoded file yet


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


Thanks! 

And i found the reference SLS encoder-decoder there, yipee! 
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?


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

Code: [Select]
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  Although it doesn't know what the secondary track is, but i guess soun:m4ae is the SLS layer.
Title: Fraunhofer has begun marketing HD-AAC
Post by: Ljubo44 on 2011-11-29 03:16:15
I have problem with: libtsp.lib , in mpeg4sls/import folder

Code: [Select]
1>libtsp.lib(UTfree.obj) : error LNK2019: unresolved external symbol _errno referenced in function _UTfree
1>libtsp.lib(UTsysMsg.obj) : error LNK2001: unresolved external symbol _errno
1>libtsp.lib(UTerror.obj) : error LNK2001: unresolved external symbol _errno
1>libtsp.lib(AFtell.obj) : error LNK2001: unresolved external symbol _errno
1>..\..\dec.exe : fatal error LNK1120: 1 unresolved externals


(http://r12.imgfast.net/users/1211/23/64/63/smiles/915955.png)
Title: Fraunhofer has begun marketing HD-AAC
Post by: darkbyte on 2011-12-10 16:49:11
Any success since then Ljubo44? 
Title: Fraunhofer has begun marketing HD-AAC
Post by: Ljubo44 on 2012-03-14 01:18:04
This is hard for compiling, please heelp. any with enc.exe 
Title: Fraunhofer has begun marketing HD-AAC
Post by: nu774 on 2012-03-14 08:37:54
This is hard for compiling, please heelp. any with enc.exe 

As written in readme.txt, libtsp(in AFsp) and libisomedia is required.
Link for libtsp (in readme.txt) is dead, but you will be able to find it by googling it.
You have to build libtsp and libisomedia first, then copy the resulting libs to "import" directory.
The one in the directory is built with at least MSVC7.1 or older compiler using -ML switch (static, single-threaded runtime), which is no longer supported by newer MSVC compiler. Therefore, it is not usable due to runtime mismatch.
This way I succeeded to build this. However, the resulting executable (encoder) crashes.

It seems that libisomedia function MP4NewSampleDescriptionWithOCRAssociation() in  ISOSampleDescriptions.c has a double-free bug, and it is the cause.
A pointer variable named esdAtom is also referenced from entry->ExtensionAtomList, and they try to destroy both of them.
I used the version in c052968_ISOIEC_14496-5_2001_Amd_10_2007_Cor_3_2009_Reference_Software.zip.

I googled it and found the similar report here:
http://lists.mpegif.org/pipermail/mp4-tech...ary/008672.html (http://lists.mpegif.org/pipermail/mp4-tech/2009-February/008672.html)
You might be able to find fixed implementation somewhere, but I don't know.
Title: Fraunhofer has begun marketing HD-AAC
Post by: eahm on 2012-03-14 09:11:24
Request this feature here (http://www.apple.com/feedback/itunesapp.html) (apple.com) if you want HD-AAC support in iTunes! Apple really pays much attention to customer feedback.

Way to many formats, thanks for the link, I am going to request FLAC support.

FLAC has already convinced some bigger labels. And the little extra-scalability-feature won't turn the tide of the world just because they are Fraunhofer and had success once.

Completely agree.
Title: Fraunhofer has begun marketing HD-AAC
Post by: benski on 2012-03-14 17:58:37
I guess foobar2000 and/or Winamp doesn't support HD-AAC out of the box so we have to wait for a decoder update there also.


HD-AAC would be my choice although there's no encoders and decoders out yet in the public


Sorry, I've been busy working on some Winamp-for-Android stuff and havn't had time yet to get HD-AAC implemented.
Title: Fraunhofer has begun marketing HD-AAC
Post by: darkbyte on 2012-08-05 23:24:03
I guess foobar2000 and/or Winamp doesn't support HD-AAC out of the box so we have to wait for a decoder update there also.


HD-AAC would be my choice although there's no encoders and decoders out yet in the public


Sorry, I've been busy working on some Winamp-for-Android stuff and havn't had time yet to get HD-AAC implemented.


No problem. I gave up on my idea and moved to FLAC and use MP3/Vorbis for portable purposes (depending on the target player software/hardware). Although if a working HD-AAC encoder/decoder gets available i'll definietly give it a try.
Title: Fraunhofer has begun marketing HD-AAC
Post by: infoleather on 2012-08-29 06:17:26
These generated files to LC-AAC playback on any device playback?