A transcoder is a device or software that converts digital media files from one format to another. This process is essential for ensuring compatibility across different devices and platforms, such as converting a video file for playback on a smartphone or streaming service. Transcoders can adjust various parameters, including resolution, bitrate, and codec, to optimize the media for specific uses. Transcoding is commonly used in the fields of video streaming and broadcasting, where content must be delivered in various formats to accommodate different user devices. Popular examples of transcoding software include FFmpeg and HandBrake, which are widely used for personal and professional media projects.