Ticket #113 (open enhancement)
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@… | 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
-
po_arrive_early_michelle_021811.S_mxf.log
(1.8 KB) -
added by k_s_johnson 2 years ago.
- ffmpeg output log
-
po_arrive_early_michelle_021811_fs_trunc.mov
(2.0 MB) -
added by k_s_johnson 2 years ago.
- Input file truncated after processing with qt-faststart
-
foo.m4a
(246.1 KB) -
added by bat_guano 5 months ago.
Change History
Changed 2 years ago by k_s_johnson
-
attachment
po_arrive_early_michelle_021811.S_mxf.log
added
comment:1 follow-up: ↓ 2 Changed 2 years ago by cehoyos
- Status changed from new to open
The sample you uploaded doesn't work, use qt-faststart to produce a sample that you can cut with dd.
Changed 2 years ago by k_s_johnson
-
attachment
po_arrive_early_michelle_021811_fs_trunc.mov
added
Input file truncated after processing with qt-faststart
comment:2 in reply to: ↑ 1 Changed 2 years ago by k_s_johnson
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.
comment:3 follow-up: ↓ 4 Changed 2 years ago by cehoyos
- Version changed from git to git-master
- Type changed from defect to enhancement
- Reproduced by developer set
comment:4 in reply to: ↑ 3 Changed 5 months ago by bat_guano
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.
ffmpeg output log