FFmpeg is a free software project that produces libraries and programs for handling multimedia data - wikipedia 
The name of the project is inspired by the MPEG video standards group, together with "FF" for "fast forward". The logo uses a zigzag pattern that shows how MPEG video codecs handle entropy encoding.
Here are some useful links:
# Cropping Videos
# Layering and remixing
# See also - Splitting video using ffmpeg - Ffmpeg Picture-in-picture - Animated Gif - Scene Detection - DaVinci Resolve - Zoom * Components * Supported hardware * Supported codecs and formats * Supported protocols * Supported filters * Legal aspects * FFmtech Foundation * Projects using FFmpeg * Forks