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#113 closed enhancement (fixed)

AAC - Audio object type 23 is not supported

Reported by:	k_s_johnson	Owned by:
Priority:	wish	Component:	avcodec
Version:	git-master	Keywords:	AAC-LD
Cc:	batguano999@hotmail.com	Blocked By:
Blocking:		Reproduced by developer:	yes
Analyzed by developer:	no

Description

ffmpeg AAC codec (decoder) doesn't seem to support AAC-LD and libfaad or libfaad2 (which is documented to support AAC-LD) is no longer an audio codec option. So there is no way to decode AAC-LD format audio track anymore. However, vlc on windows seems to play the file

ffmpeg build from git snapshot of a few days ago( ffmpeg-HEAD-e16665b) on Fedora 2.6.30.9-96.fc11.x86_6411.

command line:
ffmpeg -y -i po_arrive...mov -acodec pcm_s24le extracted.wav

Error message is:
[aac @ 0x1e9bfa0] Audio object type 23 is not supported.

Attachments (3)

po_arrive_early_michelle_021811.S_mxf.log (1.8 KB ) - added by k_s_johnson 15 years ago.: ffmpeg output log
po_arrive_early_michelle_021811_fs_trunc.mov (2.0 MB ) - added by k_s_johnson 15 years ago.: Input file truncated after processing with qt-faststart
foo.m4a (246.1 KB ) - added by bat_guano 14 years ago.

Change History (14)

by k_s_johnson, 15 years ago

Attachment:	po_arrive_early_michelle_021811.S_mxf.log added

ffmpeg output log

follow-up: 2 comment:1 by Carl Eugen Hoyos, 15 years ago

Status:	new → open

The sample you uploaded doesn't work, use qt-faststart to produce a sample that you can cut with dd.

by k_s_johnson, 15 years ago

Attachment:	po_arrive_early_michelle_021811_fs_trunc.mov added

Input file truncated after processing with qt-faststart

in reply to: 1 comment:2 by k_s_johnson, 15 years ago

Replying to cehoyos:

The sample you uploaded doesn't work, use qt-faststart to produce a sample that you can cut with dd.

Uploaded new input file processed with qt-faststart and cut with dd.

follow-up: 4 comment:3 by Carl Eugen Hoyos, 15 years ago

Reproduced by developer:	set
Type:	defect → enhancement
Version:	git → git-master

by bat_guano, 14 years ago

Attachment:	foo.m4a added

in reply to: 3 comment:4 by bat_guano, 14 years ago

Replying to cehoyos:
Hi
This AAC-LD profile can be achieved using libfdk_aac encoder with FFmpeg:-
$ ffmpeg -i foo -c:a libfdk_aac -profile:a aac_ld -b:a 64k -ar 44100 -ac 2 foo.m4a
Sample is attached.