[FFmpeg-user] True range of native AAC encoder.

[Aditya Dandavate]

I was encoding with VBR native FFMPEG's AAC encoder i.e using `-q:a.`

https://trac.ffmpeg.org/wiki/Encode/AAC

The above page says that effective range for -q:a is `0.1 to 2.0.`

But, I tried to encode with `-q:a 5.0` and FFMPEG didn't gave any error for
encoding the audio. I was suprised!

And I got around 300kbps with `-q:a 5.0`

So, what is the true effective range for VBR encoding i.e for -q:a with
FFMPEG's Native AAC encoder ?