Jittery DVD encoding AAARRRGH!

kramnodrog wrote on 2/18/2003, 3:41 PM
The following regards the sonicfoundry "Screenblast" software. As there is no forum on that site, I was hoping someone would have the answer here

I'm having a major problem when exporting a project to DVD. I incorporated film filters (sometimes 2-3 per scene) into the rough cut and exported the whole movie using the “Make Movie” command. After exporting to NTSC DV Format, the DVD and the DVD avi file is coming out jittery. This is especially true if there is a lot of motion going on in the video, or if the camera is moving. Any suggestions? I'm using a p4 266 vaio with a Geforce card, 1 gb of RAM. I turn everything off prior to encoding ... even the monitor, all to no avail

Comments

JohnnyRoy wrote on 2/20/2003, 4:31 PM
> After exporting to NTSC DV Format, the DVD and the DVD avi file is coming out jittery

I’m not sure what you mean by DVD avi file. DVD’s use MPEG files not AVI files. Also I wasn’t aware that ScreenBlast could make a DVD. I thought it made VCD only? (which can be played in a DVD player but they are not the same as DVD’s.)

If you’re really making a VCD, I could interpret your notion of "jittery" to mean the compression artifacts that are seen during a high motion scene. If this is what you mean, then the audio should not be jittery, just the video. If this is the case, the problem is the low bitrate that VCD’s use. There’s not much you can do about it.

The other thing that would make video "jittery" is if the field order was reversed. NTSC DV uses lower field first and if you encode it with upper field first the picture would get very jittery during mid to high scene motion but look perfectly fine when there is little to know scene motion.

~jr