HappyHorse 1.0 I2V
[Core Function] HappyHorse 1.0 I2V is a streamlined image-to-video model. [Strengths] It generates high-quality 720P/1080P video (3-15s) from an image efficiently, with native audio support. [Best For] Highly recommended for: rapid image animation and robust character motion. [Limitations] Does not support complex video continuation like Wan 2.7 I2V. [Routing] Use when the user requests ‘HappyHorse’ or a streamlined image animation.
Authorizations
API Key authentication. Format: Bearer YOUR_API_KEY.
Body
First frame image URL. Supports HTTP/HTTPS URLs. Image requirements: Format: JPEG, JPG, PNG, WEBP; Resolution: Width and height >= 300 pixels; Aspect ratio: 1:2.5 ~ 2.5:1; File size: <= 10MB
^https?://"https://example.com/first.jpg"
Optional text prompt to guide video generation. Supports any language input. Maximum length: 5000 non-Chinese characters or 2500 Chinese characters (automatically truncated if exceeded)
5000Video resolution level. The model automatically scales to the nearest total pixels based on the selected resolution. The output video aspect ratio approximately matches the input first frame
720P, 1080P Video duration in seconds. Must be an integer between 3 and 15
3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 3 <= x <= 15Random seed for reproducibility. If not specified, the system generates a random seed. Note: Due to the probabilistic nature of model generation, even with the same seed, results may not be completely identical
0 <= x <= 2147483647