On Wed, 16 Mar 2005, Robert Olson wrote: > What you might be seeing is this: > > On linux, vic captures via v4l at 352x288. On a BT848-flavored card (I think > the Ospreys fall in this class as well as the Hauppauge cards), capturing at > more than 240 lines causes teh capture to happen from both fields, as NTSC > video is two fields of 240 lines each. Hence, you get interlacing effects. > > As I recall with vic on windows, it captures at 320x240, so the data comes > from a single field and hence has no interface artifacts.
Isn't that just the difference between 1/4 PAL and 1/4 NTSC. We capture at 1/4 PAL on a BT848 with no interlacing problems. If you can flick your cameras into PAL mode, and capture at that res, all should be fine I think. jh
