Resolution change with crop animation?

Philip wrote on 6/19/2018, 9:11 PM

MVS Plat 15, W7, older i5, lower-end GPU; HD video.

This may simply be a computer speed issue, but I thought I'd ask. I'm in the process of editing a short video piece done solo. Unable to zoom remotely while recording self, I decided to add a very slow, slight animated crop to one event; crop of about 30 percent over perhaps 20 seconds. Initially, I halted the "zoom" before the end of the event, but later noticed an apparent decrease in resolution in the preview from when the crop animation begins through its end. The event frames before and after show increased sharpness and, slightly, brightness (maybe a function of the former). I understand that Vegas is recalculating pixels in order to "zoom". I cut the event and replaced it with the same section from the same clip in the project media, applying the animated crop throughout, without the problem. Is this to be expected? WiIl it render this way? Is is just my somewhat weak machine?

Thanks.

Comments

Musicvid wrote on 6/19/2018, 9:39 PM

Render quality Best, Disable Resample may be the best you can do in Vegas.

EricLNZ wrote on 6/19/2018, 10:38 PM

I suspect the decrease in quality is caused by Vegas having to stretch out the remaining pixels after cropping to cover the original image area. It's unavoidable. Try adding low value USM FX to "sharpen" it up. Animate it from zero at the start of the crop to your max at the end. Your max value only needs to be low value.