Start and end frames
The start image becomes the first frame of your video. Add an optional end image and the AI animates a smooth transition between the two — useful for transformations, reveals and product shots.
Writing a good motion prompt
Describe the subject's action, the camera move and the mood: “she turns toward the camera and laughs, hair moving in the wind, slow push-in, golden hour”. Short, concrete prompts beat long lists of adjectives.
Pricing by length and quality
Image to Video is billed per second of output: 4 credits/s at 480p, 8 at 720p and 16 at 1080p. A 5-second 720p clip costs 40 credits. Failed generations are refunded automatically.
FAQ
Which model powers Image to Video?+
ByteDance Seedance 2.0, which supports start/end frames, 4–15 second clips, up to 1080p and native audio.
Do I need to write a prompt?+
No. Without a prompt the AI adds natural, cinematic motion to your image.
What aspect ratios are supported?+
16:9, 9:16, 1:1, 4:3, 3:4 and 21:9 — or Auto, which follows your image.
How long are videos kept?+
7 days. Download anything you want to keep.