FFmpeg is a free and open-source software project that provides a suite of libraries and programs for handling video, audio, and other multimedia files and streams. It includes the command-line tool ffmpeg for processing video and audio files, as well as other tools like ffplay, a simple media player, and ffprobe, a command-line tool to display media information. FFmpeg supports a wide range of formats and protocols, making it a versatile solution for multimedia processing tasks.

Key features of FFmpeg include:

Format Support: Handles a vast array of video and audio formats, ensuring compatibility with various media files.
Cross-Platform Compatibility: Runs on multiple operating systems, including Windows, macOS, and Linux, providing flexibility for different environments.
Comprehensive Libraries: Offers libraries such as libavcodec for audio/video codecs, libavformat for container formats, and libavfilter for media filters, enabling developers to integrate multimedia processing capabilities into their applications.
Command-Line Tools: Provides command-line utilities like ffmpeg for media conversion, ffplay for media playback, and ffprobe for analyzing media streams, catering to both developers and end-users.
Hardware Acceleration: Supports hardware-accelerated encoding and decoding through technologies like Vulkan, VAAPI, and OpenHarmony, enhancing performance and efficiency.

FFmpeg is licensed under the GNU Lesser General Public License (LGPL) version 2.1 or later, with some components available under the GNU General Public License (GPL) version 2 or later. This licensing structure allows for broad usage and integration, while also providing options for those who require different licensing terms. Users are encouraged to review the licensing details to ensure compliance with their specific use cases.