Jagged lines in Final Movie

rirusson wrote on 10/27/2004, 6:00 AM
Which is the best way to avoid the JAGGED lines that one gets on STILLS (still pictures .jpg 655x480) within a movie/project?

Lines for instance of telephone or electric lines or edges of buildings o lines on billboards, etc.

They don't appear after rendering from VEGAS 5.0 but when the project is on DVDA 2.0b they do.

If I render to MC MPEG2 (video & audio together) they show up less than when I do a separate MPEG2 and AC3 for DVDA.

Any pointers will be appreciated.

Thanks.

Comments

farss wrote on 10/27/2004, 6:19 AM
It's called aliasing, simply a limitation of the low resolution of video. It looks worse as things get better, higher resolution monitors/TVs don't smooth things out as much so you can really see it.
Try opening the stills at the same res is PS and you'll see them there too. Any straight line thats just off horizontal looks really bad.
One way you can fix it is to add Guassian Blur in the vertical direction only. Well that doesn't fix it, it just masks it. Where it looks really bad is if you zoom into a still with fine detail.

Bob.
johnmeyer wrote on 10/27/2004, 8:07 AM
As farss, says, its partly just the nature of digital imaging, whether video or stills.

Other things to try beside the blur:

1. Turn "reduce interlace flicker" on for the event (you'll find it in the event Properties dialog). This "messes" with the interlace for that event and may help.

2. Render using the Best setting. You'll find this in the Custom button when you go to the Render As dialog. This will substantially increase rendering time. Be aware that it does NOT improve render quality for most situations, but it DOES improve the rendering for still photos, and that is its main purpose.

I would suggest rendering just the problem picture, using various combinations of the gaussian blur, interlace flicker, and best render setting until you find something that looks good to you.

Oh, your still photo should have at least 720x480 pixels when you are completely zoomed in (if you are zooming). Thus, if you zoom in so the width and hegiht of the pan/crop box is half the size of the frame, then you need a photo that is at least 1440x960 pixels (double in each direction). If you don't, you will get wicked staircasing (as they might say in Boston, although they may be saying other things tonight).
rirusson wrote on 10/27/2004, 10:59 AM
Well, thanks a million you guys, I'll try ALL those suggestions you have mentioned.

This is a project of about 1 hour that is mainly with still photos and about 20% of them show this jagged or staicasing problem.

I'll start working on it .....

Thanks again for your great help.