[vlc] VP80 codec ignores bitrate

[Arkaid Deims]

I've been trying for about an hour to transcode a video using VLC
1.1.11. It seems to transcode just fine, except for the fact that it
decides to ignore the bitrate I set.

The command line is as follows:

vlc --demux raw video --rawvid-fps 30 --rawvid-width 656
--rawvid-height 516 --rawvid-chroma=RV24 --rawvid-aspect-ratio 4:3
--sout=#transcode{vcodec=VP80,vb=512,acodec=none}:standard{access=file,dst="./test.webm"}
video.raw

As you can see, I'm using a raw video input (later this will be piped
from another application in that format), and asking to transcode to
VP80 at 512Kb/s. The thing is, it transcodes to VP80 but at much
higher bitrates (around 5000kb/s)

Any tips?