Opened 5 years ago

Closed 5 years ago

#6940 closed defect (fixed)

Noise in encoded audio when using aac_at encoder

Reported by: Jiejun Owned by:
Priority: normal Component: avcodec
Version: git-master Keywords: audiotoolbox
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


Summary of the bug:

Encoded audio file has some noticeable noise when when using aac_at encoder with aac_he profile. It also could be reproduced when using aac_lc with low bitrate <=64k.

This issue could also be reproduced on iPhones when using libavcodec directly.

To reproduce:

% ./ffmpeg -f lavfi -i sine=duration=10 -c:a aac_at -profile:a aac_he test.m4a

ffmpeg version: git-master
built on: macOS 10.13.2

I'll submit a patch.

Change History (2)

comment:1 by Carl Eugen Hoyos, 5 years ago

Keywords: audiotoolbox added

comment:2 by James, 5 years ago

Resolution: fixed
Status: newclosed
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