flickering or "wavy" artifacts along the edges of objects

John-H wrote on 8/23/2025, 6:16 PM

I'm experiencing an issue while editing in Vegas Pro 20. I took a PNG screenshot from a 4K progressive video and applied a slow zoom motion using the Event Pan/Crop tool under Video Event FX. However, in both the preview window when editing and the final rendered footage, the image shows flickering or "wavy" artifacts along the edges of objects during the zoom.

This issue is most noticeable around detailed edges, such as windows, doors, roofs, and similar structures. You can see the problem in the video sample - pay attention to the windows click here https://drive.google.com/file/d/1SFM0vhIqt3H96LqHIIrpClzdekWn7kvY/view?usp=sharing

In my project properties:

Resample mode is set to Disabled

Deinterlace method is set to None

Render output is 1080P 59.94

Video source properties: 4K 59.94

Any suggestions on how to fix or reduce this effect would be greatly appreciated.

Comments

zzzzzz9125 wrote on 8/23/2025, 8:22 PM

@John-H This is the moire pattern produced during scaling. To solve it, add a "Quick Blur" FX to your event.

Using VEGAS Pro 22 build 250 & VEGAS Pro 21 build 208.

Information about my PC:
Brand Name: HP VICTUS Laptop
System: Windows 11.0 (64-bit) 10.00.22631
CPU: 12th Gen Intel(R) Core(TM) i7-12700H
GPU: NVIDIA GeForce RTX 3050 Laptop GPU
GPU Driver: NVIDIA Studio Driver 560.70

John-H wrote on 8/23/2025, 9:23 PM

Quick Blur FX dont help😞

EricLNZ wrote on 8/23/2025, 9:51 PM

Try Gaussian Blur with very low values and add as a Media FX, not Event FX.