Vidu Q4

Vidu Q4 is an AI video generation tool for turning still images and reference sets into short video clips. According to the product page, it offers two production modes. Image to Video starts from a single picture with an optional text prompt, so one strong still can become a moving shot. Reference to Video requires a prompt plus one to twelve reference images, which suits scenes where a subject, product or location has to stay consistent across a clip.
Both modes share the same output controls. Clips run from three to sixteen seconds in whole seconds, resolution ranges from 540p up to 4K, and audio can be generated alongside the picture. Prompt expansion is available in image mode to turn a short instruction into a fuller scene description, and a seed value lets a creator repeat a setting that worked instead of guessing again.
A practical starting routine: begin with one image and one sentence describing the movement and camera direction, review that single change, then add resolution or length. Decide the frame shape before rendering, because aspect ratio follows the starting image in image mode and is selectable in reference mode. Note the seed when an output is close, and refine the prompt wording rather than simply making it longer. For product or brand work, only animate material you are authorised to use.
Because output is generated rather than filmed, small artefacts can appear in hands, text or fine edges, especially at longer durations and higher resolutions. Review the full clip rather than the opening frame before publishing, and keep a short list of rejected prompts so the same idea is not retried blindly.
Typical uses include short social cuts built from product photos, storyboard previsualisation before a shoot, and turning a static hero image into a looping background. The tool fits teams that already produce stills and want motion without scheduling a camera crew. It is also useful when a single frame has to become several variations of the same scene, since the reference mode keeps a subject recognisable between attempts.
Before committing to a workflow, check the current plan limits and export options on the product site, as those change over time.