Turn time backwards for a feeling of magic, rewinding or assembling.
Scattered parts gathering into a product, a spill flowing back.
Useful when the model is bad at scenes where something comes into being. Generate a scene where things scatter or drain away, then flip it with reverse,areverse. Avoid walking people and smoke, which look obviously reversed.
Generate the scene breaking apart (a glass vase shatters and the shards fly away in slow motion), then play it backward so the pieces fly together: ffmpeg -i in.mp4 -vf reverse -af areverse out.mp4. Avoid walking people or smoke, which look wrong in reverse.
Not verified