Twixtor Pro变速插件是Vision Effects公司比较有名的比较流行的一款插件，
它能够”无极”的减慢、加速或变更连续图像的帧速，制作视频升降格动画，带给你惊人的视觉效果，
Twixtor raises the bar in motion estimation. Twixtor is much more accurate, tracks objects farther, and exhibits fewer artifacts when there are objects crossing in the scene. This means less tearing and stretching of objects as they cross or go out of the frame.
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