Was CBR or VBR used for the video in a file?

[LevelB]

I have several (200) .avi files of about 700mb each of old movies. The video was encoded either using virtualdub (CBR) or nandub (VBR). I would like to re-do the CBR files, but viewing all of them to try and determine which is which would take a long time. Is there a utility (like gspot or MovieID) which can tell me if the video is CBR or VBR? gspot gives me this info for audio, but not video.

TIA

B

[banjazzer]

How do you know some are VBR and some CBR just by watching them?And if some of the avis are CBR, why do you think you will improve them by encoding again to VBR?

[LevelB]

Ban:

1. You can tell by the macroblocks.

2. The re-encoding would be done from the original source tapes.

3. It's not a guess - some were done CBR not VBR.

4. I'm gonna guess you are not aware of a utility that can give me this information.

P.S. You can't be certain just by seeing whether nandub or virtualdub was used for the final encoding. With some of the files the final mux of the mp3 was done using virtualdub, even though nandub was first used for the video compression.

P.P.S. I put this in "newbie" because I was not sure where else it should go.