To create an effect where a clip looks like its floating over a glass floor...like you see with the album art on iTunes
1. add a layer, and play a clip, not full screen, place it so the bottom of the clip is about halfway down the screen
2. Duplicate the layer, flip it so its upside down
3. move layer 2 until its top almost touches the bottom of the first layer
4. adjust the alpha of layer 2 until the desired relection is required.
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