Hi, We made some videos in front of a greenscreen with more or less static opjects in a stop-motin movie. This works pretty good, but some parts reflect the greenscreen and thus the image is not that clean.
I now try to combine the croma key with a mask.
When using the “simple mask” (in German: “Maske: Einfache Form”) this works great, when using the operation “add”.
I now want to create a mask and load this from a file. This doesn’t work for me. I thind the reason is that here there is no “operation: add” available and thus the chroma key (above) the “mask from file” is not combined.
Any way to accomblish this with the current version of Shotcut?
See the Key Spill filters are made to help for this.
Really? But Mask: From File overwrites the chroma key’s alpha. If you put Mask: From File first then Chroma Key: Advanced’s Operation parameter can be changed to combine alpha channels.
When I first created this, I did Mask From File first, then added the Chroma Key:Simple & set the color to sort of take out the trees (didn’t think it would work) and I had got all black. Then I dragged the Chroma Key: Simple above and it worked.
As I go back for the screenshot, it’s not showing back from the changed order. But I did not try Advanced. Today I’ve been playing around a lot with the Chroma Key Advanced filter to learn more about it.
Following your Chroma Key Advanced advice, really nice. I just didn’t try hard enough. Wasn’t looking for total chroma key on the trees, but Advanced is the way to go for sure. I don’t fully understand the RGB delta or Slope yet. This is just me experimenting.
