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LAME equivalent in AAC world ?
chrizoo
post Mar 13 2010, 12:56
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hi everyone.
I am new to AAC and have read a lot about the technical advantages of HE-AAC v2.

No my question would be:
In the mp3 world the flagship encoder is commonly considered LAME. Is there an equivalent in the AAC world?

What is the preferred choice by the community here?
I think the most important consideration is the quality of the encoder, isn't it? So which one would you guys recommend?

many thanks.

(OS: Windows)

This post has been edited by chrizoo: Mar 13 2010, 12:58
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[JAZ]
post Mar 14 2010, 10:27
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I have to apology since I added confusion in the aim of preventing confusion.

QUOTE (C.R.Helmrich @ Mar 13 2010, 16:02) *
I still disagree. Why is the outer part of an image less important than the center part? If you look directly at the edges of an image, don't you want them to be artifact-free just like the center part?

Replace "center part" by "foreground" an "edges" by "background". Even JPEG may represent the background more blocky than the foreground.
Think of this as a redistribution of bits where more bits go to what the user may pay more attention to.


QUOTE (chrizoo @ Mar 13 2010, 17:22) *
In posting #22 and #21 I highlighted in red the parts that made me - erroneously according to [JAZ] - fall for the "superset" explanation and I highlighted and posted them because I felt they might contradict [JAZ] when saying "That graphic does not try to say that HE-AAC is a superset of LC-AAC and that HE-AACv2 is a superset of HE-AAC.". That's all.


It is true that HE-AAC is a superset of LC-AAC by adding SBR, and HE-AACv2 is a superset of HE-AAC by adding Parametric Stereo.

It is true also that, since SBR and PS are parametric tools, and since the LC-AAC codec (when used with SBR and/or PS) works at a lower quality (half the samplerate for SBR, and in mono in the case of PS), the LC-AAC part is used without its full potential.

If one used LC-AAC only, it would be the same as taking a photograph with a professional camera.
Using HE-AAC would be like taking the photograph with a consumer camera, and then optimize it with a software program.

You cannot get the same quality, if your aim is getting the best one.

That's why the "HE" family is only targeted to low bitrates, and in those cases, being one of the best, if not the best codec.

This post has been edited by [JAZ]: Mar 14 2010, 10:29
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Posts in this topic
- chrizoo   LAME equivalent in AAC world ?   Mar 13 2010, 12:56
- - lvqcl   HE-AAC v2 is useful only for very low-bitrate file...   Mar 13 2010, 13:02
- - chrizoo   doesn't HE-AAC v2 support up to 256 kbps (assu...   Mar 13 2010, 13:09
- - lvqcl   HE-AAC v2 uses parametric stereo. You can find so...   Mar 13 2010, 13:22
- - lvqcl   QUOTE (lvqcl)assuming that this statement holds tr...   Mar 13 2010, 13:26
- - chrizoo   QUOTE (lvqcl @ Mar 13 2010, 13:22) HE-AAC...   Mar 13 2010, 13:36
|- - kornchild2002   QUOTE (chrizoo @ Mar 13 2010, 05:36) But ...   Mar 13 2010, 14:15
- - Larson   In AAC world there is not a "lame" equiv...   Mar 13 2010, 13:48
|- - chrizoo   QUOTE (Larson @ Mar 13 2010, 13:48) A new...   Mar 14 2010, 18:48
- - lvqcl   QUOTE In this case, the statement would hold true ...   Mar 13 2010, 13:51
- - [JAZ]   I think i see now the reason of your confusion. ...   Mar 13 2010, 14:08
|- - TechVsLife   QUOTE ([JAZ] @ Mar 13 2010, 09:08...   Mar 21 2010, 02:46
- - googlebot   To cut a long story short, there is no LAME equiva...   Mar 13 2010, 14:11
- - lvqcl   If a decoder can handle HE-AAC v2 then it can also...   Mar 13 2010, 14:24
- - [JAZ]   Adding some more info to this thread http://www.e...   Mar 13 2010, 14:45
- - chrizoo   QUOTE (Larson @ Mar 13 2010, 13:48) In AA...   Mar 13 2010, 15:14
- - chrizoo   QUOTE ([JAZ] @ Mar 13 2010, 14:08...   Mar 13 2010, 15:15
|- - C.R.Helmrich   QUOTE (chrizoo @ Mar 13 2010, 16:15) QUOT...   Mar 13 2010, 15:36
|- - chrizoo   QUOTE (C.R.Helmrich @ Mar 13 2010, 15:36)...   Mar 13 2010, 16:14
|- - Mike Giacomelli   QUOTE (chrizoo @ Mar 13 2010, 10:14) ** s...   Mar 13 2010, 17:17
- - [JAZ]   QUOTE (chrizoo @ Mar 13 2010, 15:15) QUOT...   Mar 13 2010, 15:37
|- - C.R.Helmrich   QUOTE ([JAZ] @ Mar 13 2010, 16:37...   Mar 13 2010, 15:40
- - [JAZ]   Yes, but that gives the impression that HE improve...   Mar 13 2010, 15:44
|- - C.R.Helmrich   I still disagree. Why is the outer part of an imag...   Mar 13 2010, 16:02
- - chrizoo   QUOTE (chrizoo @ Mar 13 2010, 15:15) QUOT...   Mar 13 2010, 16:34
- - chrizoo   In posting #22 and #21 I highlighted in red the pa...   Mar 13 2010, 17:22
- - halb27   chrizoo, you're about to swim in an ocean of i...   Mar 13 2010, 17:54
- - [JAZ]   I have to apology since I added confusion in the a...   Mar 14 2010, 10:27
|- - chrizoo   QUOTE ([JAZ] @ Mar 14 2010, 10:27...   Mar 14 2010, 10:36
- - Larson   http://www.hydrogenaudio.org/forums/index....showt...   Mar 14 2010, 21:30
- - chrizoo   Judging from the image in post #6 and from QUOTE (...   Jun 15 2012, 04:04
- - chrizoo   since I cannot edit the post anymore, what I mean...   Jun 15 2012, 12:55
- - benski   Probably because it's assuming that there are ...   Jun 15 2012, 16:18
- - chrizoo   ok, that makes sense. There were lots of conflicti...   Jun 15 2012, 17:12


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