Strips appearing with panoramic movement and masks

Bruno_Souchu wrote on 9/4/2023, 3:37 PM

Hi everyone ! I am having trouble while rendering my video on Vegas 20.0 (official version). My project contains a lot of panoramic and dynamic masks (for splitscreens and vintage transitions). I'd like to render it at 3840/2160p, 25 fps and a 50M/s bitrate, but strips appear whenever there is a glide effect (a video gliding upon another), or when my mask moves quickly.

I did a screenshot of the problem : in my project, the guy on the left slides upon the right footage, with no blur. It renders very well in HD below a certain bitrate but when I try to push the quality or the resolution, it just keep making those strips and those ghosts images.

I can guarantee that there is no problem of framerate (my rush are in 25fps, my render too), and I've made it work perflecty with a low quality (4mo/s).

 

Another example : the black square (mask) is supposed to glide at the bottom, but the strippy trace isn't supposed to be there.

 

 

I've been trying everything (GPU on/off, desentrelacing, lower field first, etc....) but nothing works...

Has anyone a clue of what's happening ?

I thank you all !

 

Bruno

Comments

fr0sty wrote on 9/6/2023, 2:15 AM

Is resampling turned off in project settings? Does the media framerate, the project framerate, and the render framerate all match exactly? You mentioned your media and render framerates match, but if the project framerate is off, that will cause issues too.

Systems:

Desktop

AMD Ryzen 7 1800x 8 core 16 thread at stock speed

64GB 3000mhz DDR4

Geforce RTX 3090

Windows 10

Laptop:

ASUS Zenbook Pro Duo 32GB (9980HK CPU, RTX 2060 GPU, dual 4K touch screens, main one OLED HDR)

EricLNZ wrote on 9/6/2023, 3:05 AM

I wonder if this is the same problem as here? https://www.vegascreativesoftware.info/us/forum/frame-leading-edge-glitch-in-vegas-slide-fx-in-vegas-pro-21--142406/

Bruno_Souchu wrote on 9/6/2023, 3:40 AM

Thanks for your kind answers, everything is concordant between my project, the medias and the render. I've workaround the glitch by first exporting my project frame by frame in png. format, and then, in a new project, export this serie of images as a high bitrate video, it seems to work well even if it's not the very best way to make a video. Very strange !

Good luck everyone and have a good day.