Black Flashes

Roger Bansemer wrote on 3/18/2022, 11:46 AM

I'm having issues when I render my project (mxf format) and have black flashes here and there. It's always where there's an transition so I'm thinking the Vegas is having trouble rendering all that information. I'm using the "GPU acceleration of video processing" with my Nvidia RXT 3070 graphics card. Could it somehow be the video card setting and should I just turn it OFF.

Thanks, Roger

Comments

john_dennis wrote on 3/18/2022, 11:55 AM

Try turning GPU decoding and acceleration off first. Then, zoom into the timeline and look for non-aligned cuts.

Roger Bansemer wrote on 3/18/2022, 3:34 PM

No, that's not the issue. I've just rendered without GPU acceleration and it's fine. Only one problem... Rendering with the GPU ON takes about 30 minutes. With it OFF it takes a full 4 hours which is a big disadvantage.

Former user wrote on 3/18/2022, 3:37 PM

@Roger Bansemer  Hi, is it poss you have partial frames at the start/end of your events or 1 black frame at the end, i'd have a closer look at that just to make sure,

Roger Bansemer wrote on 3/19/2022, 8:58 AM

I have believe I found out what is causing the black flashes in my renders. I had my Dynamic Ram Preview set too high and I'm guessing it took away too much rendering power. Does that make sense?

Former user wrote on 3/19/2022, 1:45 PM

@Roger Bansemer Hi, i doubt that is the reason, might depend on how high you had it set tho? I have Dynamic Ram set at 50% but i have plenty to play with, there's comments about setting it low for render but you'd have to search that,

I just rendered a 4k timeline, the RAM usage only went up from 14% to 16%, (see the very small step in the RAM graph)

can you go to your icon at the top, click it - My Profile, & fill in your Signature with your Vegas version, Windows version & system specs, CPU, GPU, RAM etc. this will then show at the bottom of the comments 👍 (see mine at the bottom of this comment)