Camera movement = bad render?

mark30 wrote on 3/2/2003, 4:23 AM
Hi everyone,

Does abybody know what causes the problem of certain clips in which the camera pans give render with horizontal, kind of flickering lines? If I play them it seems fine, but as soon as I start to render it comes out with these annoying horizontal lines. I tried to change field order etc. but I can't get it to work right. I'm using VV3. rest of the material renders perfectly...

grtz,
Mark

Comments

musicvid10 wrote on 3/2/2003, 12:43 PM
It's called Interlace, and is a normal function of NTSC and PAL TV standards. Interlaced video will appear in the manner you describe on a noninterlaced screen, such as a computer monitor, but will play normally on a standard TV set. Here are two links to sites with full explanations of the subject:
www.lukesvideo.com
www.100fps.com
wcoxe1 wrote on 3/2/2003, 4:43 PM
If you are doing something to the clip and it has to be rendered, AND, after rendering it shows up with those odd lines on your TV, then you might want to RIGHT Click on the clip, pick Properties, and Check REDUCE INTERLACE FLICKER.

I find that this helps in some situations, whether the movement is from camcorder panning, or rapid movement in the scene.

You can also access the REDUCE INTERLACE FLICKER through Switches after Right Clicking on the particular clip.

I don't advise using this on every clip, only on those that show up on TV with the problem you mentioned. If it only shows up on the computer and not on the TV, be thankful and don't try to correct a problem you really don't have. Unless, of course, your primary place to view it is the computer.

Another possible fix, which I sometimes use by itself, sometime WITH Reduce Interlace Flicker, is a TINY bit of Gaussian Blur, on the order of .001. Sometimes that also helps. Too much and, well, things get blurry fast. Not good.

Another thing: Use BEST render quality. That helps, also. But, be prepared for a slower render. Depending on what you have done in your edit, the time can be dramatically longer.