Preview Video Stutters - is jumpy

Natan-Katzman wrote on 5/17/2025, 9:06 PM

With Vegas Pro 21.0. the video preview play stutters badly when played, jumping across many frames when I use MP4 files from our best camera. (It also jums this way when played on VLC Media Player.) When examined frame by frame on Vegas 21.0, each successive frame changes in the normal way.

The audio plays fine. When I render the original video, the new MP4 video plays properly on the media player and works fine in Vegas 21.0. But it is almost impossible to edit the original video because it is so jumpy..

Specs for this camera are XAVC S 4K 24p 100mbps 4:2:2 10 bit. I have no problem with MP4 from our other camera at XAVC S 4K 24p 100mbps 4:2:0 8bit

The problem occurs for both 24 frames per second and 30 frames per second. My hardware is a PC using Windows 10 with 16GB of RAM and an NVIDIA GeForce GT 1030 video card

I’d appreciate any insights or suggestions. Thanks, Nat

Comments

AAProds wrote on 5/17/2025, 9:09 PM

@Natan-Katzman

You'll need to ask this on the Vegas forum here:

https://www.vegascreativesoftware.info/us/

ericlnz wrote on 5/17/2025, 9:13 PM

@Natan-Katzman You haven't popped up on the Vegas forum yet but when you do the answer is simple - 16gb system ram is inadequate for your best camera's material.

CubeAce wrote on 5/18/2025, 1:40 AM

@ericlnz

Hi Eric.

According to the manual it's the amount of vram on the graphics card. The GTX 1030 only has 2GB but considering the graphics card in use it could also be the CPU and generation of the motherboard ram depending on the age of the system.

The GTX 1030 was the first graphics card I used with MEP 2018 and it was struggling with HD projects as my CPU and ram were also inadequate when I first started. Although my system worked, the experience was far from ideal and I also was editing files at 100Mb/s. IMHO it is never good to have just the minimum specs for a smooth experience.

Ray.