containerformatten

Containerformatten is a term used in computing to describe a file format that can encapsulate several separate data streams and associated metadata within a single digital file. Unlike codecs, which define how individual audio or video samples are encoded, a container format specifies the structure that holds those streams, their timing information, and how they can be accessed or synchronized during playback.

A container typically contains video and audio streams, subtitle tracks, chapters, and metadata such as title or author. It also includes an index or seek table to enable random access. Some containers support attachments or embedded fonts, and may describe interleaving patterns and time bases for synchronized playback.

Common examples include MP4 (MPEG-4 Part 14), Matroska (MKV), WebM, AVI, and Ogg. Each container has its own feature set and compatibility profile. Some emphasize broad device support and streaming, while others prioritize extensibility and advanced metadata. The choice of container does not fix the codecs used for the streams and may affect playback compatibility and feature support.

Usage and considerations: when delivering media, practitioners select a container that balances compatibility, feature requirements, and licensing. Content can be stored or streamed, and container formats may evolve with updates to support new features, such as multiple audio tracks or subtitles. As with codecs, interoperability between player software and hardware is an important factor, influencing the practical adoption of a given container format.