FastH3

Guide · Image to video

Animate between two frames with FastH3

First & Last Frame mode needs an opening image and accepts an optional ending image. The opening image sets the aspect ratio; your prompt directs the movement and sound in between.

Try First & Last Frame

In short

  • The opening image is required and sets the aspect ratio.
  • An ending image is optional and guides the final composition.
  • Describe motion and sound, not the whole scene again.
  • Keep both frames consistent in subject, light and style.

Prepare the frames

  • Use images you own or have permission to animate.
  • Crop the opening frame to the shape you want the video to be.
  • For the ending frame, change position or angle — not the whole look.

Prompt the transition

Example
The camera slowly rises from the cafe table to reveal the street outside as morning light grows. Soft street ambience and a distant tram bell.

Settings

Choose 5, 10 or 15 seconds. Draft at 480p (13 credits per second), finish at 768p (20 credits per second). The exact total appears before you submit.

Frequently asked questions

Is the ending frame required?

No. Only the opening image is required.

Can I choose a different aspect ratio in this mode?

The opening image determines the aspect ratio.

Updated 2026-10-04. FastH3.video is an independent video creation service. Example clips are demonstrations, not promises of an identical result. Model names and third-party trademarks belong to their owners.