48000hz aacPlus

[SimonSez07]

i am trying to encode this audio track (48khz) using winamp's aacPlus but it doesnt seem to support sample rates above 44100. i tried using winamp transcode, and aacenc.exe. the only time i got it to work, it appearantly downsampled my source to 24000hz!

is this a limit of the codec?

[dimzon]

it appearantly downsampled my source to 24000hz!
is this a limit of the codec?
No, You just use not AAC+ capable decoder!

[SimonSez07]

no, because i use winamp itself. and it plays my nero he-aac files at 48000hz. (although strangely it reports 'aac lc' under track info).

[dimzon]

no, because i use winamp itself. and it plays my nero he-aac files at 48000hz. (although strangely it reports 'aac lc' under track info).
This is known issue of Winamp's native input plugin! Just try alternative from http://rarewares.org/aac.html

[SimonSez07]

ok so overwriting winamp's own plugin with rarewares in_mp4.dll (240,640 bytes) dated July 09, 2004, 9:48:04 AM. winamp still reports my he-aac m4a file encoded with nero vbr profile internet::medium with the following description:

Track Type Info
1 audio MPEG-4 AAC LC, 5788.979 secs, 50 kbps, 48000 Hz
...

now about winamp aacPlus: you are saying that you have confirmed you are able to encode 48000 hz source into cbr aac file with sbr and ps using winamp 5.1?

because that is what i am trying to do and i am not successful.

thanks for all your help dimzon

[dimzon]

now about winamp aacPlus: you are saying that you have confirmed you are able to encode 48000 hz source into cbr aac file with sbr and ps using winamp 5.1?
Yes! But there are 2 problem:
1) Obtained file is MPEG2 AAC. Solution: convert it to MPEG4 AAC using Nic's AAC Patch first
2) Obtained file is RAW ADTS. Solution: wrap it into MP4 container using MP4BOX (mp4box.exe -add file.aac -sbr file.mp4)

[SimonSez07]

ok, using belight, i did this:
BeSweet.exe -core( -input "vts_03_02.ac3" -output "vts_03_02.aac" -logfile "vts_03_02_1.log" )
-azid( -n1 -s stereo -c normal -L -3db )
-dimzon( -dllname bse_WinampAacPlusV2.dll -cbr 48 -mode 4 -v 2 )
then i used nic's aacpatch:
aacpatch.exe vts_03_02.aac output.aac
Input is AAC MPEG-2 Low Complexity (LC)
Creating AAC MPEG-4 Low Complexity (LC)
End Of File! All Done!
and ran that aac thru mp4box with the following output:
mp4box.exe -add output.aac -sbr file.mp4
AAC import SBR (implicit) - sample rate 24000 - MPEG-4 audio - 1 channel
Converting to ISMA Audio-Video MP4 file...
Saving to file.mp4: 0.500 secs Interleaving
so clearly i am doing something wrong during encoding to get 24000 hz file. btw, what is the difference between mpeg2 and mpeg4 aac if they can be converted into each other without recoding?

[SimonSez07]

no more help?! dimzon??

well, for the time being i will just continue to use nero aac. using he and vbr set to 'internet', bitrate is not much higher than using 48kbps with winamp and i still think the quality is very good.

[dimzon]

ok, using belight, i did this:

and ran that aac thru mp4box with the following output:
mp4box.exe -add output.aac -sbr file.mp4
AAC import SBR (implicit) - sample rate 24000 - MPEG-4 audio - 1 channel
Converting to ISMA Audio-Video MP4 file...
Saving to file.mp4: 0.500 secs Interleaving


Just try to play resulting mp4 - it will 48000KHz

[SimonSez07]

dimzon. thanks for reply. but i have discovered i am not using newest dll's.

i think files at http://mirror05.x264.nl/dimzon/ are not up-to-date

could you please post a link to your newest bse_Winamp / bse_enhAacPlus and bsn.dll files and i will try again to do my encodes

[dimzon]

dimzon. thanks for reply. but i have discovered i am not using newest dll's.

i think files at http://mirror05.x264.nl/dimzon/ are not up-to-date

could you please post a link to your newest bse_Winamp / bse_enhAacPlus and bsn.dll files and i will try again to do my encodes
Just download latest BeLight beta package (i have not dedicated web space but Kurosu13 have latest versions )

[dimzon]

Use latest foobar2000 beta for file info:
http://img140.imageshack.us/img140/1219/foobar1ng.png

[SimonSez07]

ok, tried:
BeSweet.exe -core( -input "C:\DVD_VIDEO\Season_3\ep_11.ac3" -output "C:\vts_03_02.aac" ) -azid( -n1 -s stereo -c normal -L -3db ) -dimzon( -dllname bse_WinampAacPlusV2.dll -cbr 48 -mode 4 -v 2 ) -boost( /b=3 /l=0.95 )
output:
BeSweet v1.5b31 by DSPguru.
--------------------------
Using azid.dll v1.9 (b922) by Midas (midas@egon.gyaloglo.hu).
Using Shibatch.dll v0.25 by Naoki Shibata & DSPguru (shibatch.sourceforge.net).
Using bse_WinampAacPlusV2 by dimzon, Build Sep 14 2005, 11:26:10
Manual Dynamic-Compression algorithm by LigH (author of WaveBooster).

[00:00:00:000] +------- BeSweet -----
[00:00:00:000] | Input : C:\DVD_VIDEO\Season_3\ep_11.ac3
[00:00:00:000] | Output: C:\vts_03_02.aac
[00:00:00:000] | Floating-Point Process: No
[00:00:00:000] +-------- AZID -------
[00:00:00:000] | Input Channels Mode: 3/2, Bitrate: 448kbps
[00:00:00:000] | Output Stereo mode: Stereo
[00:00:00:000] | Total Gain: 0.000dB, Compression: Normal
[00:00:00:000] | LFE levels: To LR -3.0dB, To LFE 0.0dB
[00:00:00:000] | Center mix level: BSI
[00:00:00:000] | Surround mix level: BSI
[00:00:00:000] | Dialog normalization: -4dB
[00:00:00:000] | Rear channels filtering: No
[00:00:00:000] | Source Sample-Rate: 48.0KHz
[00:00:00:000] +-------- BOOST ------
[00:00:00:000] | Algorithm by : LigH
[00:00:00:000] | Boost Factor : 3.0
[00:00:00:000] | Limit Factor : 0.95
[00:00:00:000] +---------------------
[00:40:57:408] Conversion Completed !
[00:06:07:000] <-- Transcoding Duration
opened in foobar 0.8.3; properties are:
http://img.photobucket.com/albums/v231/SimonSez07/foobar_aacplus.gif

thanks dimzon for all your help!