H3 Max First and Last Frame Video Guide

H3 Max can use a first image and an optional last image to guide where a generated shot begins and ends. The model creates the motion between them; your prompt should explain the path, timing, camera behavior, and sound.

Make the two frames compatible

The strongest pairs usually share:

• the same aspect ratio and similar framing;
• the same subject identity, clothing, object shape, or product design;
• compatible camera height and perspective;
• a believable spatial or visual path between states;
• enough space for the action to happen.

Avoid changing the subject, location, camera angle, lighting, and art style all at once. If several things must change, use a longer duration and state the order clearly.

First/last-frame prompt template

Begin exactly from the first image. [Describe the motion and camera path.] Preserve [identity and fixed details]. Transition continuously toward the composition of the final image. Reach the final image by [time] and hold it for the last half-second. Audio: [sounds tied to the visible events].

Example transition direction

Begin exactly from the first image. The camera moves slowly forward as afternoon light fades into blue hour. Leaves and hair respond to a gentle wind while practical lights turn on one by one in the background. Preserve the subject's identity, clothing, and proportions. Transition continuously toward the final composition, arrive by the last second, and hold steady for the final half-second. Audio: light wind, distant city ambience, and one soft tonal rise.

Choose the duration

• 5 seconds: one simple movement or reveal.
• 8–10 seconds: a clear change with room for a short ending hold.
• 12–15 seconds: several ordered beats, provided the frames remain compatible.

Start at 480P to test whether the transition is structurally believable. Use 768P for the selected result when faces, products, or texture need more detail.

Common problems