Spice up a Montage with the Luma Blending Effect
The Luma Blending Effect shows two different clips at the same time. By using a template made in Photoshop, like the one shown below, a clip can be shown in the white region and another clip can be shown in the dark region. Furthermore, you can make the template move, across the screen. This is a good effect if you want to show a montage or highlight and connect pieces of footage.
First, you need to put the clips that you want to layer in different video frames. So put one clip in video 1, and the other in video 2.
Then, import the matte that you created in Photoshop, and add it to the sequence of clips you want to use this effect on. Next, select the matte image and go to the control panel. Adjust the scale of the image until it fills the whole screen. Select all of the clips that you want to add the effect to by using the marquis tool.
Find the track matte key, by either manually scrolling through the effects list, or typing “track matte key” into the search bar and then selecting it. Once you have found the tool, add it to the clips you wish to manipulate. Now, make sure to deselect all of the clips before continuing.
Go to the control panel again, and select the track matte key. Change the matte from none to the first clip that you selected. Then, change the composite from matte alpha to matte luma. Repeat these steps for all of the other clips in the sequence.
Now, key frame the position at the beginning of the clip. You can key frame a position by selecting the toggle button next to the position option in the control panel, as the image below demonstrates.
Also, select the motion parameter. Adjust the matte image until the left side of the image completely fills the screen. Move the play head to the end of the clip and set another position key frame. Select the motion parameter again, but, this time, adjust the matte image until the right side of the image completely fills the screen.
Select the first key frame, and right click. Go to the temporal interpolation option, and change it from linear to Bezier. Finally, repeat this for the second key frame as well. The image below shows a still, of the luma blending effect. As you can see, in the upper right hand corner, there is a combination of footage shot at night and footage shot during the day, combining to separate clips into one cohesive video.
The image below shows another example of luma blending. In this one, the template is the figure B and the complete effect is seen in figure C.