for aac_low profile as well, I am getting the same error. PFB error
ffmpeg -i Bera_Jaal.wav -codec:a libfdk_aac -vbr 3 output.m4a
ffmpeg version N-95890-gdf62505 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.12) 20160609
configuration: --prefix=/home/ashish/ffmpeg_build --pkg-config-flags=--static
--extra-cflags=-I/home/ashish/ffmpeg_build/include
--extra-ldflags=-L/home/ashish/ffmpeg_build/lib --bindir=/home/ashish/bin
--enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libtheora
--enable-libvorbis --enable-libmp3lame --enable-nonfree --enable-gpl
libavutil 56. 36.101 / 56. 36.101
libavcodec 58. 64.101 / 58. 64.101
libavformat 58. 35.100 / 58. 35.100
libavdevice 58. 9.101 / 58. 9.101
libavfilter 7. 67.100 / 7. 67.100
libswscale 5. 6.100 / 5. 6.100
libswresample 3. 6.100 / 3. 6.100
libpostproc 55. 6.100 / 55. 6.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, wav, from 'Bera_Jaal.wav':
Duration: 00:02:44.04, bitrate: 1411 kb/s
Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo,
s16, 1411 kb/s
File 'output.m4a' already exists. Overwrite? [y/N] y
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le (native) -> aac (libfdk_aac))
Press [q] to stop, [?] for help
[libfdk_aac @ 0x356eb40] Note, the VBR setting is unsupported and only works
with some parameter combinations
Output #0, ipod, to 'output.m4a':
Metadata:
encoder : Lavf58.35.100
Stream #0:0: Audio: aac (libfdk_aac) (mp4a / 0x6134706D), 44100 Hz, stereo,
s16
Metadata:
encoder : Lavc58.64.101 libfdk_aac
size= 2169kB time=00:02:44.04 bitrate= 108.3kbits/s speed=37.6x
video:0kB audio:2141kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 1.327570%
________________________________
From: ffmpeg-user <[email protected]> on behalf of Ted Park
<[email protected]>
Sent: Thursday, December 26, 2019 2:32 PM
To: FFmpeg user questions <[email protected]>
Subject: Re: [FFmpeg-user] VBR setting is unsupported in libfdk_aac
> [libfdk_aac @ 0x29c5c00] Note, the VBR setting is unsupported and only works
> with some parameter combinations" and its encoding into CBR.
>
> How can I encode into vbr for HE-AAC. I am using the below mentioned command.
According to the man page:
Currently only the aac_low profile supports VBR encoding.
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