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Originally Posted by Manao
But I don't see the point in caching many motion vectors. That won't speed up a filter as soon as it needs to do some processing.
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The method I am using in Motion is recursive; computing the motion vectors for frame 50 requires the motion vectors for frame 49, which requires the motion vectors for frame 48, which... motion vectors for frame 1, which requires the motion vectors for frame 0. Some methods of dealing with issues raised by this require caching many motion vectors.
In order to use the motion vectors in MVTools, you need to compute whatever additional information is requested by filters; so you need to run them through a conversion filter to generate this. What is the difficulty with having that filter read motion vectors in the Motion format and write them in the MVTools format?