AAC decoding doubts #9

ixuhan · 2022-04-03T16:57:49Z

ixuhan
Apr 3, 2022

Hello, I want to ask you a few questions (I don't know much about audio decoding):

AAC decoding does not seem to be effective for M4A? (Do I need to manually unpack the M4A to extract the original AAC data and then use the decoding library for decoding)
Does the Helix library have a source code repository? I tried to find the source code on the Internet, but never found the original address?
thank you and best regards :)

Answered by pschatzmann

Just discovered that these questions have never been answerd:

libheix does not support any MP4/M4A parsing. You can use the MP4Parser class from the AudioTools library to extract the aac packets. Or you can use another codec e.g. FDK-AAC or FAAD2
The original Helix Community website that hosted the source was: http://www.helixcommunity.org That site is no longer active, but the Helix DNA project and its licensing are documented in historical references.

pschatzmann · 2026-07-06T13:18:04Z

Just discovered that these questions have never been answerd:

libheix does not support any MP4/M4A parsing. You can use the MP4Parser class from the AudioTools library to extract the aac packets. Or you can use another codec e.g. FDK-AAC or FAAD2
The original Helix Community website that hosted the source was: http://www.helixcommunity.org That site is no longer active, but the Helix DNA project and its licensing are documented in historical references.

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