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What AI Video Generators Still Can't Do Well

Updated September 28, 2026

AI video has improved quickly, but it is worth understanding where it still falls short before you plan a project around it.

Long, coherent sequences

Most free and fast models generate clips of only a few seconds. Anything resembling a continuous multi-minute scene has to be assembled from many short generations in an editor.

Consistent characters across clips

Generate the same "person" twice with a pure text prompt and their face, clothing or build will likely differ. Image-to-video with the same reference photo helps, but is not perfect either.

Readable text in the scene

Signs, labels and on-screen text usually come out garbled. If text needs to be legible, add it afterward in an editor rather than relying on the model to generate it.

Precise hand and finger motion

Actions like typing, playing an instrument in close-up, or intricate hand gestures often distort. Wider shots or cutting away from the hands avoids drawing attention to this.

Physical accuracy

Water, cloth, smoke and complex lighting can behave in ways that look close but not quite physically correct on close inspection.

Working with the limits, not against them

The most reliable results come from short clips, simple motion, wide-to-medium framing, and treating each generation as one part of a larger edited sequence rather than a finished film.

Keep these in mind next time you generate on the homepage.