First and last frame control

Select Start / End (First/Last Frame) in the video workspace. This mode supports three input states:

• No images: Generate a video from the prompt.
• One image: Use it as the first frame.
• Two images: Use them as the first and last frames. The model creates a continuous, natural transition between them.

A last frame cannot stand alone without a first frame. If you remove the first frame, add another first frame or clear the last frame. Click or drag to add images; existing images can be edited, replaced, or removed. Switching models or modes preserves the images. If the target mode or model supports fewer images, the interface warns you and blocks submission without silently discarding them.

Start / End accepts at most two images. To use multiple reference images, choose All-purpose reference. Available duration, resolution, and aspect-ratio choices depend on the selected model.