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How to Use Vidu Q3 Start-End Frame Control to Generate Transition Shots

10 min Shot Language

Start-End to Video control fits scenarios where you already have clear designs for the first and last frames, such as product rotation showcases, a door opening to an interior panorama, or a character rising from a seated to standing pose.

1. Prepare two keyframes with complementary information

Aim for:

  • Consistent framing direction: e.g., all eye-level or slightly top-down;
  • Consistent light direction: avoid cold light at the start and warm light at the end, which can make the middle transition feel unnatural;
  • Controllable subject movement: the displacement between start and end should stay within physical intuition.

2. Describe what happens in between in your prompt

Add a short paragraph in the prompt describing the key events between start and end:

  1. How the product rotates and how reflections sweep across the logo;
  2. Micro-expression changes as a character moves from emotion A to emotion B;
  3. Whether the cut is a hard cut or continuous motion.

Tip: For a more cinematic feel, explicitly include camera terms like “slow push-in” or “subtle handheld feel.”

3. Combining with 16-second long shots

With Vidu Q3 supporting up to 16 seconds at 1080P, you can:

  • Use start-end frame control for key transitions;
  • Reserve ambient sound and dialogue pacing for the segments before and after in the same prompt.

If you are not yet familiar with 16-second narrative splitting, start with “How to Get Started with Vidu Q3 Fast: From Prompt to 16-Second Clip.”

4. Connecting to the one-click ad workflow

For strong marketing use cases, start-end frame control can be combined with the Vidu Agent workflow: let Agent produce a rough cut first, then refine key transitions with start-end frames. For more details, see the blog post “Vidu Agent One-Click Ad Workflow: From Storyboard to Multilingual Voiceover.”

Notes

  • When start and end frames differ too much, the middle transition may feel “jumpy”—add more transition event description.
  • If the scene involves real brand stores or product packaging, ensure assets and authorization are in place.

Treat start-end frame control as a tool for shot-level keyframe animation, not simple interpolation, and you will more easily get deliverable final clips.