[FFmpeg-user] request for review: feature request of "disallow unallowed bitrates"

[bat guano]

> 
> So I was thinking of filing a trac with a request to at least "warn"
> when it ends up picking some bitrate other than that specified.
> Any feedback before I do so?

Hi
This happens already (in some cases).

Example (Using FFmpeg version git-2012-07-26-d5d5e3d):-

ffmpeg -i foo.wav -c:a libvo_amrwbenc -b:a 48k -ar 16k -ac 1 output.amr
...
bitrate not supported: use one of 6.60k, 8.85k, 12.65k, 14.25k, 15.85k, 18.25k, 19.85k, 23.05k, 23.85k, using 23.85k