[Libav-user] How to tell if a mp3 file was encoded with VBR?

[Andrey Utkin]

2013/6/5 Hendrik Schreiber <hs at tagtraum.com>:
> Hey everybody:
>
> Is there an easy way to find out, whether an mp3 file (or any other codec for that matter) was encoded with VBR?

What about demuxing file to AVPackets, and then analyzing sum of their
sizes within sliding timestamp window?
I hope i used right terms.

--
Andrey Utkin