FFMPEG vs GStreamer: What are the differences?
Developers describe FFMPEG as "The universal multimedia toolkit". The universal multimedia toolkit. On the other hand, GStreamer is detailed as "Open source multimedia framework". GStreamer is a library for constructing graphs of media-handling components. The applications it supports range from simple Ogg/Vorbis playback, audio/video streaming to complex audio (mixing) and video (non-linear editing) processing.
FFMPEG and GStreamer can be categorized as "Image Processing and Management" tools.