30 lines
946 B
Text
30 lines
946 B
Text
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Merge
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=====
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.. function:: Merge(vnode clipa, vnode clipb[, float[] weight = 0.5])
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:module: std
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Merges *clipa* and *clipb* using the specified *weight* for each plane. The default
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is to use a 0.5 *weight* for all planes. A zero *weight* means that *clipa*
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is returned unchanged and 1 means that *clipb* is returned unchanged. If a
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single *weight* is specified, it will be used for all planes. If two weights
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are given then the second value will be used for the third plane as well.
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Values outside the 0-1 range are considered to be an error. Specifying more
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weights than planes in the clips is also an error. The clips must have the
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same dimensions and format.
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How to merge luma::
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Merge(clipa=A, clipb=B, weight=[1, 0])
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How to merge chroma::
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Merge(clipa=A, clipb=B, weight=[0, 1])
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The average of two clips::
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Merge(clipa=A, clipb=B)
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The frame properties are copied from *clipa*.
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