4k NVENC issues (some sort of blur)

beneken wrote on 11/9/2017, 4:33 PM

Hey! First things first, I'm new to video editing. I downloaded the trail version of Vegas Pro 15 and started editing a 4k gaming clip (just to try vegas before buying).
Vegas is great, but I'm not happy with the rendered results. The only reason I think about buying Vegas Pro instead of Movie Studio is because it can utilize my 1080Ti to speed up rendering.

The picture below shows the issue I'm experiencing. During fast movements the picture becomes blurry (in a weired way). You can see it in the bottom part of the picture, around the person.

To render I use the Internet 4K 2160p 59.94 fps (NVidia NVENC) template and I changed the var bit rate to 135Mbps.
Both, the clips and the final file, are stored on the same SSD. I'm using Win 10 on a i7 7700 and a 1080Ti. The 16GB RAM or the GPU RAM are never full during rendering. CPU is at 100%, GPU between 10 and 20.

I couldn't find a fix online. Any help would be appreciated!

EDIT: The image size got changed. its hard to see in the picture

Comments

beneken wrote on 11/9/2017, 5:48 PM

Thank you for the fast response! I can't reproduce the error using only a small part of the video. If I try to cut the faulty video it gets even worse. I've uploaded the clip to youtube (at 10 sec. in):

The MainConcept AVC Setting worked just fine, but it takes forever to render a 2 Min clip...

Max is set to 135M and Avg to 100M. What is RC mode?

beneken wrote on 11/9/2017, 6:13 PM

These ones I suggested

Which one? All of them are circled :D I just used VBR, the default option... but the others dont work either.

Former user wrote on 11/9/2017, 9:07 PM

These ones I suggested

Which one? All of them are circled :D I just used VBR, the default option... but the others dont work either.

Hardware encoding will always give lower quality results than software but in your case you want speed over quality. Did you try "VBR - High Quality" . I personnally couldn't see a difference & bitrates were the same. Have you tried turning off any plugins and see if you still get the same blurring on fast motion?

This is probably the hardware encoder not being able to handle 4K60p. As a matter of interest how did you capture the game, What software or hardware device, if software did it use NVENC or QSV hardware encoding or software & no blurring or obvious artifact?