Question 1

Is a text prompt required?

Accepted Answer

No. The prompt is optional — the model infers natural motion from the image content. Add a prompt to guide motion direction, speed, or camera movement.

Question 2

What image formats are accepted?

Accepted Answer

JPEG, PNG, and WebP are supported. Use a minimum resolution of 512×512 for best quality.

Question 3

Can I animate multiple images at once?

Accepted Answer

The `images_list` field accepts one image for the starting frame. For multi-frame control, use the First & Last Frame variant when it launches.

Question 4

Will the output match my image's aspect ratio?

Accepted Answer

The output uses the aspect ratio you select. If it differs from the input image, the model will crop or pad to fit.

Question 5

What output resolution does Happy Horse 1.0 generate?

Accepted Answer

All Happy Horse 1.0 generations output at 1080p.

Question 6

Is Happy Horse 1.0 available now?

Accepted Answer

Yes — Happy Horse 1.0 is live on muapi via POST /api/v1/happy-horse-1-image-to-video-1080p.