Quote:
Originally Posted by Alex_ander
mvflowfps doesn't understand 'last' for some reason
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This is because the vector clips are defined as optional arguments, so in
mvflowfps(vb, vf, ...), Avisynth takes vb as the source clip and vf as the backward vector - hence the error message "Vector Clip must be specified", because MVTools sees this as missing the forward vector.
@Fizick: Is this a bug? Why are the vector arguments 'optional'?