AI Video Extender

An AI video extender generates new footage that continues an existing clip. It reads the uploaded video together with your prompt and produces a continuation that follows the original subject, scene, and motion.

Each task takes one source video. The FLUX option is the stricter of the two: it accepts a single file format and caps both clip length and file size. The Seedance option also accepts MOV and WebM files, with a file-size cap. The upload field shows the exact format, length, and size limits for the model you select.

Each model has its own duration control for the generated footage, and the available lengths appear in the settings once you choose a model. Longer durations usually cost more credits.

Yes. Both models require a short description of what should happen next. Focus on movement, camera direction, and mood rather than describing the existing scene again.

The models aim to keep the subject, lighting, and style consistent, but small changes in detail, faces, or on-screen text can appear, especially after fast motion or a scene cut. Review the join and the whole result before publishing.

Generation uses pay-as-you-go credits based on the selected model, duration, and resolution. The estimate beside the Generate button updates as you change settings, so you can check the charge before you submit.