On Mon, Nov 19, 2001 at 09:15:58AM +0000, Stephen Davies wrote: > > > Probably, this is "normal" - caused by two issues: non-interlaced capture > format and unsynchronized video and display frame rates. Hmmmm. I should have explained jerky somewhat better. It's not a "consistant" jerkiness, like seeing somebody moving in a strobe light. It's more like the display will be smooth for a number of seconds and then all of a sudden jump and then be smooth again. The effect is most obvious with news channels where they have a banner on the screen "smooth scrolling" from right to left. > I expect that you are making non-interlaced video files - MPEG1 files are > always non-interlaced at least. So MPEG1 would exhibit the effect the most? I seem to have my best luck with MPEG1 using mp1e. > 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. Sure, but when there are 25-30 frames per second having a frame or two "every now and then" display for an extra 1/25-1/30th of a second longer or dropping a frame every now and then would not cause the jumps I am seeing. > I'm surprised at your results with mp1e - that gives me well away best AV > sync for me. What are you viewing your MPEG1s with? I am using Mplayer and Windows Media Player. With WMP, the A/V starts out of sync and stays that way. With Mplayer, it starts in sync but drifts and I have to use the +/- keys to bring it back into sync. > I also have your problem with RTErec (its a problem in the RTE > library). Indeed. Justin said this too when I queried him about it. It's a shame. > I haven't had a chance to test the rest of the XXXrec tools. Well, the rest of the XXXrec tools give me the crappy jerkiness I am seeing so they just don't cut it. I sure would love to achieve the kind of quality that I frequently download from a.b.m. Is anyone getting this kind of quality? b. -- Brian J. Murrell
