Using a green screen is an affordable and easy way to transport your video to anywhere that is imaginable, even to places that do not exist. You can use it to sit behind a desk in a lively press room or dance on the moon, but first you need to know how to properly perform the chroma key that compiles two videos together. Fortunately, Enlight Videoleap on iOS makes it easy.
The chroma keyboard is when you combine two images or video clips together and compile them based on color tones. The upper layer will have parts that are "green screened" (or that use a different flat color). These parts, if the entire background or just a small space covering a TV screen, will be replaced by what's in the lower video layer. This allows filmmakers to transport subjects to completely different worlds, "air" -specific video content on screens and much more.
You no longer need powerful desktop editing software to combine green screen movies with wallpapers ̵
Step 1: Add Green Screen + Background Video
Only before you go further, make sure you have updated "Enleap Video Leap Video Editor" on your iPhone. Then open it up and start by finding both a green screen video and a video you want to play in the background.
We will show you three different methods for adding the two video clips together in your Videoleap project. For method 1, we add the background video first and then the green screen video, while in method 2 we first add to the green screen video first and then the background video. In method 3, we add both separately and combine them accordingly.
All these methods work, but the second and third parts automatically format the background movie to the size of the green screen video clip (if the same aspect ratio), which is useful if you do not want to change the size of it.
On the timeline, press the red and white plus sign and find a video that you want to be in the background of your green screen video, which means it is displayed instead of the green screen. You can search your "Camera Roll" or any of the albums in your Photos app, in the Files app or via stock footage provided by Videoleap and others (some are not free).
After adding a video in timeline, press "Mixer" at the bottom left of the toolbar. Now you can either upload a green screen video from your albums or find a free green screen video from the storage department. After you print it, the green screen video clip will be placed over the video already in your project and begin whenever the game head is located.
This is similar to Method 1, but after you have pressed the red and white plus sign in the timeline, first select a green screen video first. Then tap the green screen clip on the timeline to select it, then scroll through the toolbar at the bottom and press "Mixer". Your green screen clip will shrink up to the top layer on the timeline.
Next, press the red-white plus sign button that appears below the green screen layer and then find and select the background movie you want. Regardless of where the game head was placed, the background will appear in the timeline starting at the same time as the green screen clip.
The third way is quite simple. Just press the red and white plus sign on the timeline, then choose either your green video or your background video. When it is on the timeline, press the red and white plus sign again to add the second video.
When both are in the timeline on the same layer, press and hold on the green screen clip in the timeline until the clip becomes a small box, then pull it up a little bit until it opens up the top layer and the square becomes one up and down the teardrop, then drag over the video you want to compose with and release.  Step 2: Replace the green with the background movie
Now that your two videos are stored in the timeline, make sure that the top green screen stroke is highlighted (if you used Method 1 or Method 3 above it will already be highlighted), press then click on "Chroma" in the toolbar.
The color "Picker" tool will be selected and you will need to press and hold the circle icon in the video and then move it to the Crosshairs located in the green screen area. The green screen area will immediately disappear, replaced by the background movie.
You have two tools for editing composite: "Threshold" and "Spread". Use "Threshold", which is 25 by default, to refine the object's object in the green screen movie. Increase it to make the objects more refined. Use "Spread", which is 0 by default, to configure the opacity of the objects on the screen. If you increase it too much, the green area begins to emerge. If you are not satisfied with the results on the green screen, you can use "Reset" to restart.
When finished, press the gray area in the timeline or the back button in the toolbar to exit the chroma key tool. Then, you can tap the video clip for the green screen to edit the size and position of the foreground, if needed. When the red lines appear around the video, squeeze in to make it smaller or squeeze to enlarge it and drag and drop it where you need it.
If you do not need to make any other adjustments (see Step 3), press icon Action (aka Share) in the right, then the "Save" button to download it to your device. You can adjust the resolution and frames per second before doing so. Below is the end result for the two video clips that are mixed above.
Step 3: Adjust layers in the timeline
If you are happy with how your green screen clip looks, it's time to make further adjustments if needed. To move it to a later part of the background video, just press and hold the center of the green screen layer in the timeline and then drag it to the desired position.
To shorten the green screen clip, press and hold both ends of the layer and slide inward where you want. And if you want to erase either the green screen or the background layer, press and hold it, then down it on the trash that appears.
To adjust the brightness, contrast, saturation, exposure, and other aspects of either the green screen layer or the background layer over time, use the "Keyframe" tool (the diamond icon with a plus sign shown above the toolbar on the right) to create animations in specific parts of the video. You can use it to add fade ins and fade outs as well, but there are dedicated tools for it in the "Animation" section.
This article has been produced under the Gadget Hack's special coverage on smartphone-based video creator tips for filming and editing.
How to use key images to animate effects and create custom transitions in Enlight Videoleap for iPhone