VBR with Sigma Designs RealMagic DVR

[SLK001]

Has anyone been able to get a true variable bitrate capture with this card? I've tried capturing at various VBRs, but the resulting capture (as seen with BitRate Viewer) is a simple CBR capture. Annoying, because I don't really want to have to transcode the video to get to a true VBR (this is my current work-around).

Other than this, I am impressed with the video capture quality of this card. Been capping laserdisks and video tapes and have been more than satisfied with the results.

Does anyone have an application document for the MPEG2 encoder chip on the board (VisionTech KFIR01)? Maybe some clever programming can correct the VBR shortfall.

[SHS]

It has the same chip that found on the WinTV-PVR, what wrong with it VBR?.

[SLK001]

It gives a VBR stream that is just like a CBR. I encoded a test video at 4.5Mbps and the variation was about +/- 0.2Mbps - definitely not what I call VBR. I would expect a range from 1Mbps to 8Mbps or something like that - what I get is basically "flat line" CBR.

[SHS]

Oh that I worry about about it as long it look good on play back
No it never go more 1Mb up or down.