[FFmpeg-user] Is latm decode with fdkaac possible?
Andy Furniss
adf.lists at gmail.com
Sun Nov 9 18:37:20 CET 2014
Carl Eugen Hoyos wrote:
> Andy Furniss <adf.lists <at> gmail.com> writes:
>
>> I am asking just in case feeding latm
>> encapsulated aac to fdkaac is in someway
>> possible
>
> Yes, it is (afair).
>
> Why?
>
> I believe you know what I am usually (always, in
> every single email) asking here: No, I don't do
> it to make user's lifes as hard as possible but
> because it is needed to provide a useful answer.
>
> Carl Eugen
>
> (Command line and complete, uncut console output
> missing.)
:-) yea though if the answer was just no it would have saved extended
experements.
I haven't tried loads of variants yet but for now -
first without fdk - file plays ok with players also.
ffmpeg -i Bt5th.latm
ffmpeg version N-67488-g4e17943 Copyright (c) 2000-2014 the FFmpeg
developers
built on Nov 9 2014 17:23:50 with gcc 4.8.3 (GCC)
configuration: --prefix=/usr --enable-gpl --enable-nonfree
--enable-libfdk-aac --enable-libmp3lame --enable-libx264
--enable-libx265 --enable-x11grab
libavutil 54. 11.100 / 54. 11.100
libavcodec 56. 12.100 / 56. 12.100
libavformat 56. 12.103 / 56. 12.103
libavdevice 56. 2.100 / 56. 2.100
libavfilter 5. 2.103 / 5. 2.103
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
Input #0, loas, from 'Bt5th.latm':
Duration: N/A, bitrate: N/A
Stream #0:0: Audio: aac_latm (LC), 48000 Hz, stereo, fltp
ffmpeg -c:a libfdk_aac -i Bt5th.latm -f null -
ffmpeg version N-67488-g4e17943 Copyright (c) 2000-2014 the FFmpeg
developers
built on Nov 9 2014 17:23:50 with gcc 4.8.3 (GCC)
configuration: --prefix=/usr --enable-gpl --enable-nonfree
--enable-libfdk-aac --enable-libmp3lame --enable-libx264
--enable-libx265 --enable-x11grab
libavutil 54. 11.100 / 54. 11.100
libavcodec 56. 12.100 / 56. 12.100
libavformat 56. 12.103 / 56. 12.103
libavdevice 56. 2.100 / 56. 2.100
libavfilter 5. 2.103 / 5. 2.103
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
[libfdk_aac @ 0x1d86b80] aacDecoder_DecodeFrame() failed: 4002
[libfdk_aac @ 0x1d86b80] aacDecoder_DecodeFrame() failed: 1001
[libfdk_aac @ 0x1d86b80] aacDecoder_DecodeFrame() failed: 400a
[libfdk_aac @ 0x1d86b80] aacDecoder_DecodeFrame() failed: 1001
[libfdk_aac @ 0x1d86b80] aacDecoder_DecodeFrame() failed: 4002
snip more of the same
[libfdk_aac @ 0x1d86b80] aacDecoder_DecodeFrame() failed: 4002
[libfdk_aac @ 0x1d86b80] aacDecoder_DecodeFrame() failed: 4004
[libfdk_aac @ 0x1d86b80] aacDecoder_DecodeFrame() failed: 4002
Last message repeated 1 times
[libfdk_aac @ 0x1d86b80] aacDecoder_DecodeFrame() failed: 1001
[loas @ 0x1d86220] decoding for stream 0 failed
[loas @ 0x1d86220] Estimating duration from bitrate, this may be inaccurate
[loas @ 0x1d86220] Could not find codec parameters for stream 0 (Audio:
aac, 0 channels, s16, 147 kb/s): unspecified sample rate
Consider increasing the value for the 'analyzeduration' and 'probesize'
options
Bt5th.latm: could not find codec parameters
Input #0, loas, from 'Bt5th.latm':
Duration: 00:30:12.24, bitrate: 147 kb/s
Stream #0:0: Audio: aac, 0 channels, s16, 147 kb/s
Output #0, null, to 'pipe:':
Output file #0 does not contain any stream
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