> David Koski schrieb: > > I have found an easier way. There is a deinterlace effect called > > "Spacial field swap" that does the trick for the most part. Still, some > > sections have > > > > jerky motion instead of the jaggies like a field order reversal has. I > > > > suspect the field order is not swapped within a frame but swapped between > > frames.... > > so probably your source material contains maybe some sort of > synchronisation error or is skipping single frames? > > Maybe I should add that in general, video/media formats are highly complex > beasts, and, still worse, are often implemented "slightly incorrect" by > the vendors of cameras or other media-producing gear. Thus it is common > habit for media decoders to have some built-in tolerance and heuristics > to compensate for some glitches. It figures, that any such automatic > compensation can itself yield other glitches or be unpredictable in > many ways. Usually it's quite difficult to do an actual diagnosis > in such cases.
It looks as if the capture process is dropping a field now and then, not a complete frame. The beginning of the video has to be deinterlaced with the spacial field swap, then at some point it needs to switch to temporal, etc. That suggests frames at that point are made fields of two adjacent frames. I am using an lml33 for capture which does a good job of creating MJPEG but I am running it on a VIA chipset based motherboard. I had to put the card into the slot (PCI) nearest the cpu to get it to capture more than a few seconds before stopping. I have tried another older computer with another chipset (Intel I think) without good results but don't remember if it was the same version of kernel. That seems to make a big difference. Currently it is running in a system with a 2.6.26 kernel (Debian Lenny). I tried the 2.6.32 that installs with Debian Squeeze but had problems to get it to work. <snip> David _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
