Traditional Culture Encyclopedia - Photography and portraiture - In addition to hooks, what other better ways are there for crystal lamps to retreat?

In addition to hooks, what other better ways are there for crystal lamps to retreat?

There are ways to remove blue and green backgrounds in video software (just drag a special effect). When the background is blue-green, you can directly remove the blue-green background color, but you can't export it as a PNG map (tell me what you know). You can only change the background in the video software, so you can export it (the highest map is 1920* 1080). I wonder if it meets the requirements? Crystal lights blue and green basemaps have never been tried. Besides cross-checking, is there a better way to copy the bottom (if so, please tell me)