On Sun, 18 Nov 2001, Brian J. Murrell wrote: > What I am seeing is a slight jerkyness in video I am capturing. I > have tried encoding (I have tried mpeg1 and 4, divx and divx4) with > many tools (ffmpeg, NVrec, RTE/mp1e, avifile based tools, etc.) and > cannot seem to get rid of the jerkyness of the resulting file. Probably, this is "normal" - caused by two issues: non-interlaced capture format and unsynchronized video and display frame rates. I expect that you are making non-interlaced video files - MPEG1 files are always non-interlaced at least. So your 50/60Hz field rate becomes a 25/30Hz frame rate. Secondly - this will not be an exact multiple/divisor of your display frame rate - so some video frames are visible on the screen for differing amounts of time. > The tool that does give the smoothest (quite acceptable indeed) > capture is mp1e but the lack of A/V sync with it is unacceptable I'm > afraid. I would love to try the much ballyhooed NVrec using the RTE > library but I have not found a set of parameters that does not cause > it to deadlock. I'm surprised at your results with mp1e - that gives me well away best AV sync for me. I also have your problem with RTErec (its a problem in the RTE library). I haven't had a chance to test the rest of the XXXrec tools. Steve
