我不得不在每一帧做一个关键帧，来得到我所想要的结果。
I ended up having a keyframe at every frame to get the results I desired.
每天，团队复审前一天所做的工作，“无情地粉碎”每一帧。
Each day the team review the work done the previous day and "ruthlessly shred" each frame.
现在有了一个运动跟踪函数，对于视频的每一帧都会运行它。
Now we have a motion-tracking function that is run for every frame of video that comes in. Let's retrieve the coordinates and draw a blue circle where there is motion.
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