I'm trying to make a simple lower third for use in a PrEl project. It consists of a gradient rectangle with a lighting effect in it, overlayed on one end with a logo graphic. I removed a white background from the graphic, turning the background transparent. I also reduced the opacity on both the rectangle and the logo so that the video would show through the lower third.
If I save this as a PSD I get a couple of white artifacts (white speckles) in the upper left corner of the logo, as if I didn't quite get all of the background erased. But I've gone back over it and I'm certain that I did get it erased.
I've also tried saving it as a GIF, with transparency. That results in a clean background around the logo, but I lose my reduced opacity settings. The video no longer shows through the lower third. It also changes the aspect ratio.
I'd much rather just use the PSD file, but I can't figure out where the artifacts are coming from. Here are two frame exports. First the PSD, then the GIF. I purposely used a black background for clarity. Although the speckles may not look like much they are very apparent in the video. The opacity difference isn't obvious because of the background that I used, but the PSD does have the reduced opacity. BTW, the white dot at the base of the cross isn't an artifact....it's a circle R registered trademark symbol.
Any suggestions?