#11600: Ffprobe/Ffmpeg with libfdk-aac doesn't recognize AAC-HE(v2) livestreams
-------------------------------------+-------------------------------------
Reporter: Radu | Type: defect
Motrescu |
Status: new | Priority: normal
Component: | Version: git-
undetermined | master
Keywords: AAC libfdk- | Blocked By:
aac aac |
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
How to reproduce:
{{{
% ffprobe http://ais-edge78-181fm-
dal03.cdnstream.com:7080/181-yachtrock_64k.aac
ffprobe version N-119615-gf414038779 Copyright (c) 2007-2025 the FFmpeg
developers
built with gcc 14 (GCC)
configuration: --enable-libfdk-aac --enable-nonfree --enable-gpl
--disable-x86asm --enable-libmp3lame --enable-ffplay
libavutil 60. 2.100 / 60. 2.100
libavcodec 62. 3.101 / 62. 3.101
libavformat 62. 0.102 / 62. 0.102
libavdevice 62. 0.100 / 62. 0.100
libavfilter 11. 0.100 / 11. 0.100
libswscale 9. 0.100 / 9. 0.100
libswresample 6. 0.100 / 6. 0.100
Input #0, aac, from 'http://ais-edge78-181fm-
dal03.cdnstream.com:7080/181-yachtrock_64k.aac':
Metadata:
icy-br : 64
icy-name : 181.FM YACHT ROCK
icy-private : 0
icy-pub : 1
icy-url : http://www.181.fm
StreamTitle : Honey Drippers - Sea Of Love
Duration: N/A, bitrate: 64 kb/s
Stream #0:0: Audio: aac (LC), 44100 Hz, stereo, fltp, 64 kb/s
}}}
After some digging, I found that commit
`64bb91fd3b5a00a8849531c7e8dd207f2a626096` introduced this line of code:
`avctx->profile = hdr.object_type - 1;`
which forces the profile to always be set to 1 (AAC-LC). Commenting this
line in any version past the commit mentioned above fixes the issue.
Commits before the one mentioned above correctly identify the livestream
as AAC-HE.
It also affects the release 7.1.1.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/11600>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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