Artifacts on render


Hello All,

Me again, sorry… I have created an opening sequence of a TV with static. The TV stays still and the static moves, just like real static.’
The TV is a graphic that I removed the screen and replaced it with a transparent PNG and then saved it as a PNG. I did this in GIMP.
The static is a .MOV and works fine.
The issue is that when I render it, there are small artifacts floating on the screen which are not there in the PNG image. (See the image)
As I said, they are not on the TV png as I dropped a black background in and the artifacts were not there. Also, they do not move, they are stationary.


Could this be an alpha channel issue? If you set the premultiplication in your write node to “opaque”, do the artifacts disappear?