How to Change Video Background in Davinci Resolve (2026)

Select the edit option from media pool, drag and drop the video clip in your timeline. And make sure to add the video clip in video clip two. And now drag the video and add under the main video clip. So this is will be my new video background. And you have to uh increase the video or image length to match the background length with your main clip. Now go to the color tab and select effects. Click on search effects and type your depth. Now drag these depth map effect to the video node. The next bunch, these resulting map adjustment. Enable adjust map levels. And now we have to make our video subject completely white. So use this far limit. And now using these far limit and near limit, we have to make our background completely dark and our video subject completely white. So go ahead and make your video background black and your subject completely white just like this. Then scroll down and expand map fineness and enable post processing option. And post filter, we have to decrease this value to .24. So select here .24. Now right click here and select add alpha output. Now drag these blue square to blue circle to connect them. Then under AI depth map, disable depth map preview. Then go back to your edit screen. And here as you can see, my video background successfully changed.