[FFmpeg-soc] [soc]: r2592 - in aacenc: aacenc.c aacpsy.c aacpsy.h

Benjamin Larsson banan at ludd.ltu.se
Mon Jun 30 14:41:05 CEST 2008


Kostya wrote:
> On Mon, Jun 30, 2008 at 11:31:20AM +0200, Benjamin Larsson wrote:
>   
>> kostya wrote:
>>     
>>> Author: kostya
>>> Date: Mon Jun 30 08:42:09 2008
>>> New Revision: 2592
>>>
>>> Log:
>>> 'Real' psychoacoustic model based on 3GPP TS26.403.
>>> It's not complete yet but at least it can do something
>>> and encode close to specified bitrate.
>>>
>>>   
>>>       
>> ./ffmpeg -i luckynight.flac -vcodec aac -ab 192kb test.wav
>>
>> And decoded by mplayer(faad2) results in this.
>>
>> FAAD: Failed to decode frame: Maximum number of scalefactor bands exceeded
>> FAAD: Failed to decode frame: Maximum number of scalefactor bands exceeded
>> FAAD: Failed to decode frame: Maximum number of scalefactor bands exceeded
>> FAAD: Failed to decode frame: Gain control not yet implemented
>> FAAD: Failed to decode frame: Gain control not yet implemented
>>
>>
>> And the noisy sound but you already knew that.
>>     
>
> The funny thing it's not always happens when decoding with our AAC decoder.
> It's bitstream writer errors, I'm going to hunt down and fix them.
> Same goes for noise.
>
> What about overall performance and quality without those two issues?
>  
>   
>> MvH
>> Benjamin Larsson
>>     

The rate engine worked nicely and encoding speed was ok. The quality is 
hard to say anything about as the noise was audible at all times. Good work.

MvH
Benjamin Larsson






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