Documentation Index

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Image & Video APIs
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Video transformation recipes

Last updated: Nov-09-2026

This section contains step-by-step recipes for common video transformation goals.

Each recipe gives you a working transformation URL that you can adapt, and explains how it works.

Recipe Description
How do I change a video's background to white and turn it into a looping GIF? Key out a solid-color background (such as a blue screen), put white behind the subject, and deliver the result as an endlessly looping animated GIF.
How do I add a logo or watermark to a video? Overlay an image on a video, and set its size, opacity, and position, including sizes that scale with the video and a dark overlay.
How do I make a video square or vertical (9:16) for social media? Crop a landscape video to a square or 9:16 with automatic gravity, or keep the whole video and fill the extra space with a blurred or solid color background.
How do I get a thumbnail image from a specific moment in a video? Deliver a frame from a video as an image, choose the frame with a start offset, and use it as the poster without changing where the video starts.

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