> > What is "combing"?  I've never heard this term before and hadn't noticed
> > anything in playback of which the term is suggestive.
>
> It's when fields from mismatched frames are displayed as one frame...
> so the odd rows are from one picture and the even ones are from another.

Thanks, that was what I was finally beginning to guess, after noticing the
reference to interlacing.  The links that you and Jon gave also made this
clear. (^&


  ``I probably don't know what I'm talking about.'' --rauch@math.rice.edu