FFmpeg

FFmpeg is a comprehensive, open-source multimedia framework for processing audio and video files. It includes a suite of libraries and programs for handling various multimedia tasks, such as encoding, decoding, transcoding, muxing, demuxing, streaming, filtering, and playing virtually any audio or video format.

It is primarily used by developers, content creators, and system administrators for building multimedia applications, converting media files between formats, extracting audio or video streams, and performing advanced media manipulation. Its versatility and extensive format support make it a foundational tool in many multimedia workflows.