Use this guide to hit the right video prompt length and make every word count.
Sweet spot: roughly 30-120 words. A video prompt that's too short makes the video model improvise; one that's too long gets its later details ignored.
Every phrase in the video prompt should be filmable. Cut abstract words like "epic" or "stunning" in favor of concrete visuals.
Lighting sets the mood and is highly effective: "harsh overhead fluorescent," "warm candlelight," "cool blue moonlight."
Choose your aspect ratio deliberately: 16:9 for widescreen/YouTube, 9:16 for shorts/reels, 1:1 for square feeds.