Short VideoRenderer class that renders adds an array of OverlayRenderable overlays to a video OverlayRenderable is any UIView that provides a UIView with superView at given video playback percentage

Library provides an OverlayRenderable protocol which can be used by consumers to make UIView's renderable with our VideoRenderer
VideoRenderer class provides a way to export a given PHAsset with overlays to a URL in filesystem
A helper class from VideoRenderer saves the generated video in Photos

Instructions

• To render a video one must create a UIView conforming to OverlayRenderable
• OverlayRenderable instances that are about to be rendered must contain a superView
• To render a video use exportVideoAsset(phAsset: PHAsset, duration: Float, resolution: CGSize, overlays:[OverlayRenderable], completion:@escaping (URL?, Error?) -> ())
• Successful call of this function will return a URL containing the rendered video
• If needed one can use saveVideoInPhotos(url:URL, completion: (() -> ())? = nil) with the resulting URL to save the resulting video in Photos

Description

• OverlayRenderable instances are added on the video using their existing CGrects at the time of rendering
• For example if a OverlayRenderable with CGRect(x: 0, y: 0, width: 1920, height: 1080) is rendered on a video with provided size of 1920x1080 then the OverlayRenderable will cover the entire video
• If an Image PHAsset is used then a video is created from the still image with the given duration in seconds
• Max duration is 60s