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Psytel AAC questions
Beebo
post Feb 14 2002, 09:54
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First, i'd like to congratulate Ivan for great work he did ( bravo majstore smile.gif )

And now, some questions:

I have downloaded the latest version of Psytel AAC ( jan 31. 2002. ) and i normally encode @archive quality. i'd like to know what's the profile thingy?
All AAC's i have are LC profile, are there any better profiles? Thanx
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Sachankara
post Feb 14 2002, 12:58
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LC is supposed to be the best at the moment...
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john33
post Feb 14 2002, 13:13
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Latest version is 2.11 dated Feb 10.

john33
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wildboar
post Feb 14 2002, 19:48
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QUOTE
Originally posted by john33
Latest version is 2.11 dated Feb 10.

*********** PsyTEL® MPEG-4 AAC Encoder V2.12 (build Feb 10 2002) ***********
Copyright © 1999-2002 PsyTEL Research
Copyright © 1999-2002 Ivan Dimkovic


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Agent69
post Feb 14 2002, 20:00
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Yeah, you've got to give it to Ivan. He really maintains his software.


Agent69:)
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john33
post Feb 14 2002, 21:02
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Damn, did I miss one?!?!biggrin.gif

john33
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rjamorim
post Feb 14 2002, 22:34
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Ok, latest AACenc and OggDec beta versions uploaded.

Now, I'm going back to the beach. Stop bothering me :-P biggrin.gif

IŽll be back next monday.

Kind regards;

Roberto.


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Get up-to-date binaries of Lame, AAC, Vorbis and much more at RareWares:
http://www.rarewares.org
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Ivan Dimkovic
post Feb 14 2002, 23:25
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AACEnc 2.12 has experimental quality controlled VBR mode:

-qvbr N

where N could be in the range from 0 to 100

This is very experimental switch, and there are several issues:

1. It does not support Intensity Stereo, and so it is very hard to compare very low bitrate modes with Ogg with Fake Stereo (intensity stereo will save 15-25% of the bitrate, but with losing phase information)


2. It is still not designed for "audiophile" quality, and quality of 100 will give 140-170 Kbps files

3. It is not optimized, and still experimental (did I say that already?)
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Beebo
post Feb 15 2002, 00:07
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just checked it...
it's 2.11, Feb 10 smile.gif


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Agent69
post Feb 16 2002, 02:07
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Ivan,

Have you been doing other optimizations in general, besides the "experimental quality controlled VBR mode"?

When I read this thread, I decided to download the newest version, v2.12 and compare it to an aac created from a January '02 version of aacenc. Using a ripped wave of Richard Marx's Hazard, I encoded with only the -normal switch, which is what I always use.

Both sounded the same to me but I notice that the newer version produces slightly smaller files. For example, The Jan '02 edition of aacenc I used produced a file 6,481kb in size, while version 2.12 produces a file 6,147kb in size.
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Agent69
post Feb 16 2002, 02:09
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QUOTE
Originally posted by Beebo
just checked it...
it's 2.11, Feb 10 smile.gif


I just downloaded v2.12 (Feb 10) from Roberto.
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Agent69
post Feb 16 2002, 02:21
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Maybe it is just that particular track. I just did the same thing with "Duel Of The Fates", by John Williams, and it is the same size as the original.:confused:
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sven_Bent
post Feb 16 2002, 08:45
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qhy dont yuo se if the bits are the same by running some CRC32 check on both files and see if the checksum is the same


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