I am using following commands to make aac/mp3 files with 256kbps bitrate and constant bitrate mode.
ffmpeg -i test.wav -b:a 256k -y test.aac
ffmpeg -i test.wav -b:a 256k -y test.mp3
I need to make an aac file in CBR mode from a wav file. As per the documentation available at https://ffmpeg.org, CBR should be made using above mentioned commands but it is always making VBR.
I need help to see if I am doing something wrong, or there are some other steps to be followed. I have tested with ffmpeg versions 2.8 and 3.2.
Can anyone help me fix it?