A key mode which allows use of a wipe pattern generator to prevent some undesirable portions of the key cut signal from cutting holes in the backgroundvideo.
一种键模式，它答应使用划像图案产生器来避免背景图像的切割空洞中某些键切割信号不合需要的部分。
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Backgroundvideo player, method for processing moving images on background screen using the same, and computer-readable storage medium for storing program for execution of either of them.
Now that we have a frame-by-frame extraction of our source video files, we can create tiled background images in sequence for each frame of the final product.