technique · 1 recipe
Motion Blur
Movement during each exposure creates streaking within frames while the scene still advances at normal playback speed.
Selected recipe
Motion Blur
This is the default recipe for the Exposure Motion Blur family.
Free short AI video prompt
A starter line you can copy. The full timed recipe, still-image and production prompts are on the shot card.
Prompt rule: Tie blur to motion within the exposure while keeping normal playback; stationary geometry should not receive the same smear.
Motion Blur: Movement during each exposure creates streaking within frames while the scene still advances at normal playback speed. Keep the subject readable; motivate camera and light.
Technique guide
- When to use
- Reach for Motion Blur when you need this effect: Movement during each exposure creates streaking within frames while the scene still advances at normal playback speed.
- How it works
- Tie blur to motion within the exposure while keeping normal playback; stationary geometry should not receive the same smear.
- Common mistakes
- If the result does not follow this rule, it is not this technique: Tie blur to motion within the exposure while keeping normal playback; stationary geometry should not receive the same smear. Do not change multiple variables at once so the effect becomes unreadable.
How to read this page
Motion Blur is one technique in Time & Tempo. The definition states the single mechanism the frame has to show. The technique guide covers when to use it, the steps, the usual mistakes, how it differs from the neighbors, and what a successful take looks like.
The clip above is one reading, made with a third-party video model. Another model, or the same model on another day, can land on a different frame. It is an example, not a promise that a prompt will match it.
The free short prompt is a starter sentence. The shot card is the timed recipe: scene, start and end frames, action, light, and color. Three sample cards are free on the site. The rest are part of GrokCine Pro. A second name for the same shot keeps its own URL and points back at this definition.
When you write a prompt, keep the one mechanism in the definition, then name the subject, the motion, and why the light is there. Do not stack a neighboring technique into the same sentence. If the name or the example is wrong, send this page's URL from the contact page.
Recipe
8 seconds · single take
A small American town, 1943, at dusk: the Western Union telegram boy pedals fast past the warmly lit drugstore window, carrying the news every mother on the street dreads.
Shot cards
The full recipe for Motion Blur is a shot card
The full recipe for Motion Blur is a shot card. The start and end frames, timed action, lighting and color specs, a camera parameter table, copy-ready still-image and video prompts and negatives are open to GrokCine Pro members on the web.
Related families
- Slow Motion
Slow MotionMore capture samples are replayed at a lower frame rate so an event occupies proportionally more screen time. - Time-Lapse
Time-LapseWidely spaced exposures compress slow environmental change, with interval and exposure specified separately. - Freeze Frame
Freeze FrameA single selected frame is held so all visual sampling stops, including subject, background and texture.
More in Time & Tempo
References
Sources we studied for this technique. External links; we don't embed them.
Articles & definitions
- Wikipedia: Motion blur
Wikipedia · Web
Streaking of moving objects within a single exposure.
- Wikipedia: Shutter angle
Wikipedia · Web
Wider shutter = longer exposure = longer blur.
Videos
- Long-exposure motion blur from a moving drone
@OsitaLV · 2018-10-17 · X
Long exposure motion blur while the drone moves (1 s shutter).
Images & stills
- Shutter speed and the 180° rule
@FilmicPro · 2022-06-24 · X
Shutter speed and the cinematic 180° rule for natural motion blur.
- Sandhill cranes: sharp standing, blurred flying
@annemckinnell · 2021-02-11 · X
1/125 s keeps standing birds sharp while flying ones blur — blur only where things move.