Defects in Rendered Movies

ilmagic wrote on 3/25/2010, 5:30 AM

Hi,
I've been using Vegas for some months, now I'm realeasing my first Vegas-made editing work and I'm experiencing a problem when I burn my movies to DVD: the image on TV screen sometimes 'vibrates', 'shivers', especially where I've used ProDAD Mercalli, but this also applies to professional stock footage downloaded from iStockPhoto or clips made with FXHome. Although the Vegas pack includes DVD Architect, I still use Mediachance DVD-Lab Pro. I render the movie as an MPEG-2 file and then make a DVD out of it. May this be the cause? However, this seems to happen just on the TV screen, not on PC.
On the PC, I'm seeing another defect: the text and titles of rendered Sony Vegas projects are always dirty, somehow dotted and hard to read.
How can I fix these issues?

Comments

farss wrote on 3/25/2010, 7:00 AM

If your source video or stills is higher resolution than what you're delivering then indeed you can get the 'shiver' problem when viewed on a CRT TV. The correct name for this is Line Twitter. Heaps of info about this should be revealed by a Google.

So what you have to do is reduce the vertical resolution of the images and video before downscale. Probably the easiest way is to apply the Gaussian Blur FX to the Video Buss Master (read the manual for instructions). Using that FX set Vertical to between 0.001 and 0.003 and horizontal to 0.000. There's better but more complex ways, this one should kill it for certain.

Don't really have much of an answer for your text problem. You can reduce the problem by avoiding fonts with fine horizontal lines and by keeping your text large. Sadly Vegas lacks a good quality text generator for interlaced video.

Bob.