DDrumD

Here's a close up of the issue...

Could someone help me identify what type of noise I'm getting on my video footage. Still attached from footage. The issue can be seen in the background where there are large areas of red pixelated patches. I cant figure out what it is or how to address it. ISO was pretty high in this shot but I also shot some other footage outdoors with ISO at 200 and still had the same issue.