Do I need two images?

No. One image anchors just the first frame. Two images constrain both the start and end of the video.

How does Fast compare to Pro?

The Fast model is quicker and cheaper with a slight reduction in output quality compared to the Pro variant.

JPEG, PNG, WebP, and BMP are supported.

Name: Seedance 2 First & Last Frame Fast
Price: 0.15 USD

Seedance 2 First & Last Frame Fast: AI Image-to-Video Generator