Atomic Image Labs has announced a new FREE plugin called Atomic Stretch that enables real-time video re-targetting in After Effects and Premiere, converting from and to any aspect ratio.
Found via Lesterbanks. Thanks for sharing.
Atomic Stretch: Optimally bounded real-time stretching and beyond
Resizing video footage to a desired aspect ratio, also known as re-targeting, is a task exercised constantly by photographers, video editors, and the like. Footage from different sensors with ratios 4:3, 16:9 or 21:9 (from anamorphic lenses) has to be matched with different output devices, where the most common ratios are 16:9 (widescreen) and 21:9 (cinamascope). If web pages and billboards are included, any ratio can be encountered. Many cameras simply achieve 16:9 by cropping a 4:3 sensor, thus discarding data that might otherwise have been used.
Atomic Stretch is a plugin for your preferred Adobe video editing tool, allowing real-time smooth and optimally bounded re-targetting from and to any aspect ratio. The plugin allows preserving of high interest pixels through a protected region, attention redirection through color-modification, countering barrelling effects through vertical stretching, and tracking of targets of interest.