Occasionally Lucky Dinosaur publishes updates on projects in progress or just shorter notes that aren't full projects but may be useful to a wider audience of collaborators and the public at large.
ffmpeg is a very versatile piece of software for working with video. At its core there are video filters, and one of these filters is called select. The select filter allows a user to only write certain frames that pass thresholds to the output, in other words you can pull out interesting pieces of video using a select filter. A common use of the select filter is to produce thumbnails for each scene in a video using a scene change detector.