Excellent - it's great to see the VBV issue addressed in the new version.
Regarding b-frames, when I first began the quest to learn more about compression, I associated them with low bitrate video. The way I saw it, I could go with a low bitrate and use b-frames to salvage a little quality, or skip b-frames all together and use a higher bitrate for higher quality. B-frames are sort of a yoyo between reference frames that could be 2 or more frames apart, whereas p-frames just work from the frame immediately before, right? But perhaps b-frames are nothing to fear - and judging by my bitrate issue it's not working to do without them.
You sure know more about this than I do, Hank.
