Strobe Effect

Movement advances in visible jerky steps at a low frame rate (e.g. 8-12 per second), imitating frame-by-frame photographed animation.

This is for a motion graphics video. Give [scene] a "Stop Motion Look" (also called stepped animation or the posterize time look).
The movement should advance in visible, jerky steps at a low frame rate, each pose held for a moment as if it were photographed one frame at a time — the picture stays on throughout, unlike a strobe.
Run it over [duration] at its normal pace, keeping the same choppy rhythm from start to finish.

Slow real-world processes (clouds, growth, crowds) appear to run at high speed because frames were captured at long intervals, giving a stepped, flowing look.

This is for a motion graphics video. Show [scene] as a "Time-Lapse" (also called time-lapse photography): the camera stays locked off while slow changes race by.
Light, shadows, clouds or growth should flow quickly with a slightly stepped feel, as if the frames were taken far apart — sped-up continuous action is fast motion, and a camera that travels between frames makes it a hyperlapse.
Compress the whole change into [duration].

One layer acts as a moving window (by transparency or brightness) that reveals the image beneath, typically text or a shape wiping content into view.

This is for a motion graphics video. In [scene], use a "Track Matte Reveal" (also called a matte reveal, alpha matte or luma matte): a separate text or shape layer acts as a window, and the picture beneath shows only inside it.
Animate the window itself so it travels across and uncovers different parts of the picture, while the picture underneath keeps playing in place and everything outside the window stays empty — a shape wipe would instead replace one shot with the next.
Run it over [duration], and cut the window either by the matte layer's transparency for a crisp edge or by its brightness for a soft, graded one.

Footage is degraded to look like a worn video tape: horizontal scanlines, color bleed, noise and jittering tracking, usually in a 4:3 frame.

This is for a motion graphics video. Give [scene] a "VHS Look" (also called a VHS effect or analog tape look): degrade the footage so it plays like a worn video tape.
Layer the tape artifacts together — fine horizontal scanlines, colour bleeding softly to one side, speckled tape noise, and a tracking error that drags a band of the picture sideways while the whole frame jitters. It is a constant texture over the entire shot, not a momentary break like a glitch.
Hold it for the full [duration], and crop to the squarer frame of an old television if the layout allows.