Keep details between different frames with different resolution, how?

[otherman]

I have a video in which the first frame is full resolution, the second and the third one originally had a half vertical resolution, and so on: 1-4-7-10-13 frames at full resolution, 2-3-5-6-8-9-11-12 rescaled.
I would like to use the details of the frames 1 and 4, and the analysis of the movements between the frame 1-2-3-4, to obtain new frames 2 and 3 in full resolution (visually consistent with 1 and 4, and without the artifacts of the resizing), using the original lowresolution details when the movement guess is not acceptable.

I know it's possibile, but I don't know how to do it. Somebody help me?
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In other words: I want to use a lowres video 24fps to correctly interpolate an highres video 8fps to 24fps

[feisty2]

maybe temporal superresolution can do the work, search tempsr on google and compare it with flowfps and other stuff