Flow Veo 3 Apps
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Model
Grok Imagine
2 models available
Wan
2 models available
HappyHorse
3 models available
1.1 Text to Video
1.1 Image to Video
1.1 Reference to Video
Hailuo
2 models available
HappyHorse 1.1 Reference to Video
Keep faces and products consistent across a brand-new shot.
Creative Vision
Name each subject where you use it, e.g. "the woman in the red dress in [Image 1] hands a cup to the man in [Image 2]".
Video Parameters
Longer videos cost more.
Cinema Preview
Generation History0 records
HappyHorse 1.1 Reference to Video Generator
Upload up to 9 reference images, name them in the prompt as [Image 1] through [Image 9], and HappyHorse 1.1 puts those subjects into a scene none of the photos ever contained. 1080p, native audio, 3 to 15 seconds.
Your reference images never appear as a frame: they tell the model what each subject looks like, not where the shot starts
Why Choose HappyHorse 1.1 Reference to Video
Image to video is limited to what is already in the frame. Reference to video is not: it takes the identity of each subject from your reference images and composes an entirely new shot around them, which is how you keep a character or a product recognisable across clips.
Up to 9 Subjects, One Scene
Bring a cast together: characters, a product, a location reference. Upload each one and refer to them as [Image 1] through [Image 9] in the prompt, in the order you uploaded them.
Consistency Across Runs
Subject consistency is what version 1.1 improved most. Reuse the same reference images across several generations and the same faces and products carry between them, which a text prompt alone cannot do.
Native Audio and Lip Sync
Sound is generated with the picture. Give a referenced character a line of dialogue and it comes back spoken, in sync, in the language you wrote it in.
Nine Aspect Ratios
This page composes the frame itself, so you choose the shape: 16:9, 9:16, 1:1, 4:3, 3:4, 4:5, 5:4, 21:9 or 9:21. A reference image never constrains the ratio.
3 to 15 Seconds at 1080p
A per-second slider from 3 to 15, at 720p or 1080p. Three seconds costs 20 credits at either resolution, which makes checking a likeness cheap.
Failed Runs Are Refunded
Credits are held at submission and returned automatically if generation fails or the provider never responds. A run that produces nothing costs nothing.
Build a Series, Not a One-Off
The point of reference to video is the second clip and the third: same subjects, new scene, recognisably the same cast. Keep your reference images and reuse them.
How to Use HappyHorse 1.1 Reference to Video
This model has one rule that decides whether it works at all: the prompt has to say which subject in which image you mean. Everything else is ordinary prompting.
Upload the References
Up to 9 images, 20MB each, with the shortest side at least 400 pixels; 720p or better is recommended. Blurry or heavily compressed references degrade the whole result.
Name Them in the Prompt
Upload order is reference order: the first image is [Image 1], the second [Image 2], and so on. Say which object you mean, as in "the woman in the red dress in [Image 1]", rather than a bare "[Image 1]" — naming the subject is what makes the likeness carry.
Describe the New Scene
Now write the shot you actually want: setting, action, camera and any spoken line. The references supply the subjects, so the prompt should spend its words on everything else.
Test, Then Render
Run 3 seconds first to check the likenesses carried over. If they did, run the full length at 1080p. If one did not, swap in a clearer reference for that subject rather than rewriting the prompt.
A Reference Is Not a First Frame
Reference to video takes only the identity of each subject and builds the frame from scratch. If you need the clip to open on your actual photo, that is a different tool on this site.
HappyHorse 1.1 Reference to Video
FAQ
Reference image requirements, prompt syntax, audio, aspect ratios and credit costs for the HappyHorse 1.1 reference-to-video model.
Try HappyHorse 1.1 Reference to Video
Upload a reference, spend 20 credits on 3 seconds, and see how well the likeness carries into a new scene.