Grok Imagine 1.5 Reference-Image-Driven Short Film: Single Frame to 8-Second Camera Move

This piece demonstrates the real-world workflow of grok-imagine-1.5 (xAI · image-to-video) under "a single reference image + textual motion prompt". The only required media field in the schema is image_urls (1–7 images). This work binds a reference frame generated by a single production run to image_urls[0], and explicitly specifies 720p, 8 seconds, and 16:9 in base, illustrating the relationship between parameter combinations and cost: duration of 1–15 seconds, and three resolution tiers of 480p/720p/1080p, where 1080p only allows a single input image, and aspect_ratio only takes effect with multi-image references. The reason for choosing a single image is to reproducibly demonstrate the core image-to-video capability of "preserving the original image's lighting and details while only adding camera movement", which is also the most common entry point for scenarios such as product showcases, animating concept frames, and social media short videos. Resolution and duration are both filled in according to the schema's enum/default, with no undeclared parameters introduced. This is suitable as a reference for developers who want to understand the reference-image workflow of this model family and who need to quickly validate camera language.