Skip to main content ↑ ↓

Notice

Please note that most of the software linked on this forum is likely to be safe to use. If you are unsure, feel free to ask in the relevant topics, or send a private message to an administrator or moderator. To help curb the problems of false positives, or in the event that you do find actual malware, you can contribute through the article linked here.
Topic: Nero AAC on Rockbox? (Read 4413 times) previous topic - next topic
0 Members and 1 Guest are viewing this topic.

Nero AAC on Rockbox?

I tried playing the new Nero AAC format on my iAudio X5 through Rockbox, but it seems Rockbox didn't support these.
AFAIK, Rockbox is said to support the AAC format, so did I do anything wrong while encoding the files?
The switches I used in foobar2000 were

Code: [Select]
-2pass -br 128000 -lc -if %s -of %d


Anyone know if I should change/add/remove something?
Many thanks.
Only the best is good enough.

Nero AAC on Rockbox?

Reply #1 –
Look for answers in the Rockbox forums.
Short version: Rockbox only guarantees iTunes AAC support.

ps: aside from seeing it in the forums, I couldn't remember where I read that.. and it was bothering me, so I looked it up. found it in the ipod faq.

Nero AAC on Rockbox?

Reply #2 –
With this patch, I can play the Nero AAC files on my iPod.
Unfortunately they don't play gapless.

Anders

Nero AAC on Rockbox?

Reply #3 –
Quote from: Wintershade on
I tried playing the new Nero AAC format on my iAudio X5 through Rockbox, but it seems Rockbox didn't support these.
AFAIK, Rockbox is said to support the AAC format, so did I do anything wrong while encoding the files?
The switches I used in foobar2000 were

Code: [Select]
-2pass -br 128000 -lc -if %s -of %d


Anyone know if I should change/add/remove something?
Many thanks.


AFAIK AAC decoding does not work on the iAudio players (or any coldfire based players) because no one has bothered to optimize it.  The Ipod version is the only one that works at all, and even then just barely.

Nero AAC on Rockbox?

Reply #4 –
Code: [Select]
-2pass -br 128000 -lc -if %s -of %d


What was the container format, m4a or mp4?  Have you tried a q (vbr) file?
Foobar 0.9
Code: [Select]
 -ignorelength -q 0.55 -if - -of %d


I too would like to see working support for the Nero AAC format on the iAudio as it is one of the media players I am looking at getting.
Zune 80, Tak -p4 audio library, Lossless=Choice

Nero AAC on Rockbox?

Reply #5 –
On my iRiver H340 AAC don't play realtime. iTunes CBR plays a few seconds, stops a few seconds. Nero VBR don't play at all. Only RockBox for iPod manages realtime AAC playback.

The message from the devs on RockBox forums when this are brought up are roughly something like this: None of the current devs uses or are knowledgeable about AAC. So in order to get AAC properly up and running on RockBox somebody skilled in the mysteries of AAC (and well versed in the language of C) must step forward and start optimizing the codec (libfaad, I think) for the platforms supported by RockBox. Or else nothing much are gonna happen to improve the situation.....
"ONLY THOSE WHO ATTEMPT THE IMPOSSIBLE WILL ACHIEVE THE ABSURD"
        - Oceania Association of Autonomous Astronauts
 

Nero AAC on Rockbox?

Reply #6 –
Quote from: Mr_Rabid_Teddybear on
So in order to get AAC properly up and running on RockBox somebody skilled in the mysteries of AAC (and well versed in the language of C) must step forward and start optimizing the codec (libfaad, I think) for the platforms supported by RockBox. Or else nothing much are gonna happen to improve the situation.....


From what I gather, there is some hesitancy in trying to optimize libfaad 1) because it's large and and not the easiest code to work with and 2) because there is an ffmpeg Google SoC project currently underway to write a fixed point aac library (http://code.google.com/soc/ffmpeg/about.html) and the devs want to see what that may produce.