stubborn black outline artifact on chromakey

[Dale Paquette]

I may be a day late and a dollar short on this one – but – I have also experienced this problem and have made the observation that the brightness of the BG seems to affect the situation. Namely, a darkish BG clearly shows the black outline whereas a bright one doesn’t. Just to check this, I moved the FG around to examine it over different parts of the BG and sure enough, the outline disappears whenever the BG is bright enough. BTW, I’m keying HDV (m2t) rendered as an uncompressed AVI, 16 bit project, and Keylight. Also, before keying, I have added a channel blur and blurred the R and B channels 1 pixel while retaining edges. Maybe this will help someone. Dale

[Lisa Inserra]

No, you’re not too late…I regularly check this post to see what people are trying. However, for the most part I’ve moved on to HD so I rarely have this problem anymore. My keys are flawless. Your info will be helpful, though, if I need to shoot with the older cameras for some reason.
thanks!