ActionScript 3.0 FLVPlayback has an align property
that specifies whether the video file should be centered when it
is resized or positioned at the top, bottom, left, or right of the
component. In addition to the component’s x, y, width,
and height properties, the ActionScript 3.0 component
also has registrationX, registrationY, registrationWidth,
and registrationHeight properties. Initially, these
match the x, y, width,
and height properties. When loading subsequent
video files, automatic re-layout does not change these so the new
video file can be centered in the same place. If scaleMode = VideoScaleMode.MAINTAIN_ASPECT_RATIO,
subsequent FLV files can fit into the component’s original dimensions
rather than causing the component’s width and height to be altered.
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