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Encoding in AAC HE-AACv2 creates unplayable Audio #32

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quamt opened this issue Jul 24, 2020 · 5 comments
Closed

Encoding in AAC HE-AACv2 creates unplayable Audio #32

quamt opened this issue Jul 24, 2020 · 5 comments

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@quamt
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quamt commented Jul 24, 2020

Encoding Audio to AAC HE-AACv2 creates unplayable Audio.

syntax:
--audio-codec 1?aac --audio-profile HE-AACv2
Checking with MEdia Info it shows the below:

Audio
ID                                       : 2
Format                                   : mp4a-40-29
Codec ID                                 : mp4a-40-29

Playing the Audio in any player does not work.

Encoding to AAC without any profiles and checking in Media Info

using syntax:
--audio-codec 1?aac
shows:

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
@rigaya
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rigaya commented Jul 29, 2020

The default libavcodec aac encoder only supports AAC-LC. --audio-profile is meant for other codecs or other aac encoders such as fdk-aac which supports HE-AAC. (fdk-aac cannot be redistributed, so it is not included in my build)

@quamt
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quamt commented Jul 29, 2020

Oh I see, cause its Frauenhofer Codec
How does it look with the implementation of this
https://www.openhub.net/p/fdk-aac would that be possible?

@rigaya
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rigaya commented Aug 1, 2020

Building libavcodec with fdk-aac requires --enable-nonfree flag anyway, so it can not be redistributed.

@quamt
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quamt commented Aug 2, 2020

Oh I see.
But it's a bit confusing if it shows in the profiles, you might think it can be used for encoding.

@rigaya
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rigaya commented Sep 30, 2020

I'll close this issue as the topic has been answered.

@rigaya rigaya closed this as completed Sep 30, 2020
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