Chroma Key, as practical and effective means of special effects, has been widely used in video making. With the improvement and popularization of hardware, it will no longer be as mysterious as before. By using the Chroma key, you can easily remove specific parts so you can overlay one video on top of another. A great chroma key will make your video more vivid. While you are using the chroma key, you need to pay attention to some key elements, such as the screen, chroma key backgrounds, camera, source video, lighting, post production….etc.
Speaking of the screen, generally we have two choices, blue or green. In the old days, people used to choose blue screen, it has been used even nowadays. But green is the preferred color for digital keying. After that, we still have to find the best material of the green screen. You can paint your background (generally the wall) using a chroma key paint. This is the most permanent create a chromakey background. Or you can choose other screen, which is made of paper, or muslin background clothe. You can get this kind of material on the internet easily.
After we purchase the green screen cloth, we still need to make some videos and take some pictures based on the green screen as the chroma key backgrounds material. We usually call them Green Screen videos.
When everything is ready, then we start using chroma key backgrounds in the video by some software. There are too many software for selection. Choosing an easier program (Wondershare Filmora) Wondershare Filmorawill make you save much time.
You can use the chroma key backgrounds in the video easily by 3 steps below.
Firstly press the Import button to load the regular background clip and the green screen clip to the Media Library.
Drag and drop the regular background clip and the green screen video from the Media Library in the Video track and the PIP 1 track of the timeline respectively.
Right click the green screen video, then select Green Screen, in the pop-up window, go to Effect tab, tick the option of Make parts of the clip transparent. Putting the pencil icon on the color you want to make transparent and choose your intensity level for the transparency.
After using the chroma key backgrounds in the video, you will find it will end up with one clip on top of another. It is quite easy, isn’t it?