Freeze frame television

Freeze frame television: Television in which fixed ("still") images (the frames of the video) are transmitted sequentially at a rate far too slow to be perceived as continuous motion by human vision. The receiving device typically holds each frame in memory, displaying it until the next complete frame is available.

For an image of specified quality, e.g., resolution and color fidelity, freeze-frame television has a lower bandwidth requirement than that of full-motion television. For this reason, NASA, which refers to this technique as sequential still video, uses it on UHF when K_u band full-motion video signals are not available.