Mixed-Content Disc

混合内容碟 (Mixed-Content Disc) refers to a disc that contains two or more types of content on the same disc, each with its own viewing or listening value, such as concert footage, music videos, documentaries, interviews, bonus features, and audio-only tracks. This term describes the content composition and does not specify a particular medium, such as CD, DVD, or Blu-ray.

The menu, title, and playlist structures of DVD-Video and Blu-ray are well-suited for combining different types of content on a single disc. Producers can set up separate entry points, audio tracks, and subtitles for each content category; a single disc can also contain both standard-definition archival footage and new high-definition content. “Mixed” does not imply that all material is combined into a single continuous file. Whether a standard disc containing a main program with a small amount of bonus material is classified as “Mixed-Content” depends on the level of classification. If the bonus content consists only of supplementary trailers or short clips, the disc is typically still categorized primarily as a “Concert Film” or “Documentary”; however, when multiple content sections have relatively independent status in the packaging and menu, the “Mixed-Content” label provides more information.

This differs from technical terms such as “Enhanced CD” or “hybrid-mode CD.” The latter describe how audio tracks, data tracks, or sessions coexist on a CD, whereas “Mixed-Content Disc” focuses on the types of content visible to the user; even a Blu-ray disc with a single data structure can contain multiple types of content.

When referring to “mixed content” within a single set, a distinction should also be made between the disc level and the set level. If one Blu-ray disc contains only video and another CD contains only audio, the entire set is a mixed-media set, but each disc individually is not a “mixed-content disc.”