Once a video overlay effect is added to the Timeline you can change the overlay properties. Click the video overlay at the Timeline and press the Edit Overlay button of the Timeline Toolbar. Or alternatively right-click the video overlay at the Timeline and select the Edit Overlay option of the right-click express menu. The following window will be opened:
You can change the following overlay properties:
There is an alternative way to change the angle of the Video Overlay effect. Click the green circle (visible when the overlay is selected with the mouse) with the left mouse button, the mouse cursor will change into a round arrow - - click the mouse button and, without releasing it, drag it to change the video overlay orientation.
You can also change the Video Overlay box size using the black squares on its boundaries (the mouse button will look like this when you hover it over one of the black squares - click the mouse button and, without releasing it, drag it to change the video overlay size).
You can choose the effect used when the overlay appears in your video clicking the drop-down menu beside the Fade in Effect caption and selecting the necessary effect from the list of available ones. The same is done for the Fade out Effect.
The duration of the Fade in and Fade out for the video overlay is set on the preview slider. You can set Fade-in and Fade-out boundaries by dragging the cursor of the slider area to the place where you want the Fade-in area to end and hit the button. The Fade-in area will be marked. Then drag the same cursor to the place on the slider area where you want the Fade-out area to begin and press the button. After that the Fade-out area will be marked.
It's also possible to direct the mouse cursor at the edge of the slider area and drag the boundaries inwards or outwards. If you want to set the Fade-out effect, drag the right edge of the slider area to the left. To apply the Fade-in effect, drag the left edge of the slider area to the right (see the figure below)
You can use not simple but composite effects with the video overlay function. You can add video overlay that will be half transparent so that only part of it that has the specific color you need will be visible and all the rest will disappear to reveal the video underneath. To do that you need to enable the Chromakey option.
Select the color to be transparent clicking the downdward arrow near the Color caption. In the opened window select the color that forms the area you would like to be transparent. A window will be opened that will show the video used for overlay. Here you can use the color picker to select a specific color from your video. The Zoom option lets you enlarge your video so that you could find the specific color more easily.
After that set the selected color Threshold that will set the limit of the chromakey. The video of the selected color within the overlay video effect will be transparent to the threshold you set.
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The Trajectory tab is used to change the path of the video overlay throughout the movie image. You can select one of the presets from the list:
The selected preset will be displayed in the preview area with the chosen trajectory drawn (the green line). The small red circles show the overlay time stamps when the trajectory changes direction, the bigger ones mark the current overlay position. You can use the following buttons under the preview area to manage the trajectory:
The necessary time stamp can be selected not only using the Navigation buttons, but also with the mouse. To do that, click a rhombus representing the necessary time stamp with the mouse (the mouse cursor will turn into a hand):
After that you can either delete the selected time stamp, or alter the trajectory, or change the time stamp position on the timeline. Click it with the mouse and, without releasing the mouse button (the cursor will turned into a closed hand), move the time stamp left or right changing its position:
Any changes you make to the trajectory of the Video Overlay effect can be saved to a preset so that you can use them later if you plan to apply the same overlay trajectory to a different video.
Use the Preset area of the appropriate tab, click the Save button to save the currently edited video overlay trajectory as a preset.
You can also remove unnecessary presets from the list using the Delete button of the preset area.
You can use the Video Overlay Toolbar over the preview area to additionally manage the overlay. It has the following buttons: