The .ts file extension represents a Transport Stream file, a video stream format primarily used for storing and transmitting video, audio, and metadata over digital broadcasting systems like satellite, cable, and terrestrial television. It's designed to be robust and handle noisy transmission environments, making it suitable for broadcasting. TS files contain multiplexed data packets, meaning multiple video and audio streams, along with program-specific information (PSI) and service information (SI), are interleaved within the file. This allows for features like multiple audio tracks (e.g., different languages), subtitles, and electronic program guides (EPG). The format is highly structured and includes error correction mechanisms to ensure reliable delivery of content. Due to its broadcast-oriented nature, TS files are often encountered when recording digital television broadcasts or downloading video content from online streaming services that utilize adaptive bitrate streaming. While primarily associated with broadcasting, TS files can also be used for storing video content on local storage devices.