When you want to generate a video with consistent visuals (especially characters, scenes, or objects) across multiple frames or scenes, crafting a precise and clear prompt is essential. Here’s a step-by-step guide, including best practices specifically for maintaining consistency in your AI-generated videos:
1. Clearly Define Your Subject(s)
Describe the appearance of primary characters or subjects in detail (clothing, hairstyle, facial features).
If referencing a static image for consistency, instruct the model to “extract and preserve all identifiable features” from that image.
For every character or recurring object, document distinctive characteristics.
2. Specify Consistency Requirements
Include explicit instructions such as:
- “Maintain absolute consistency of [character/object] throughout every frame.”
- “Do not alter or randomize facial expressions or key visual features.”
- “Ensure the same outfits and positions unless specifically instructed by the action in the prompt.”
Add: “Prioritize visual stability so features do not distort or shift between frames.”
3. Detail the Scenario and Sequence
Break down the exact sequence of actions, including transitions, to help the model understand motion without sacrificing consistency.
Example: “Generate visuals where the woman smoothly turns, kisses her husband, then walks toward the camera, preserving her facial features and expression in every frame.”
4. Give Scene and Technical Details
Clarify settings, background, lighting, and mood.
Specify camera angles and movements if important for continuity (e.g., “handheld camera in all scenes”).
5. Use Structured and Organized Prompts
- Present instructions in a logical order:
- Subject(s) and their characteristics
- Action(s) in sequence
- Scene/setting description
- Consistency and stability requirements
- Visual style and technical direction
6. Emphasize Output Quality
Request high-definition output, smooth transitions, and realism as needed.
Remind the model: “Do not introduce visual randomness or changes in subjects unless stated.”
Example Prompt for Video Consistency
You are to generate a high-definition video sequence where a woman appears in every frame with the same facial features and expression as in the provided image. She turns smoothly toward her husband, kisses him passionately, and then walks towards the camera. Throughout the sequence, her facial features and expression must remain unchanged. Maintain image stability, smooth transitions, and do not alter the woman’s appearance at any point. The husband’s appearance should also remain consistent, but the primary focus is on the woman’s consistency and realism.
If more entities/scenes: Repeat detailed description for each, and refer to common features that must remain consistent.
For multi-scene narratives: Explicitly mention which features/entities persist across scenes and reference their original description.
Additional Best Practices
Avoid vague terms; be specific about every important detail.
If achieving consistency across multiple shots or scenes, provide a reference image or description at the start and use language like “as previously depicted.”
Review and refine the prompt for clarity before submission.
Following these guidelines will help you create clear, instructive prompts that produce consistent and high-quality video scenarios with AI video generators
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