Format

Stem

A separately delivered submix of a defined program element group, such as dialogue, music, or effects.

Also known as: mix stem, DME stem

Reviewed September 3, 2026

In practice

Stems support revisions, localization, trailers, versions, and alternate mixes; their channels, level, processing, synchronization, and sum-to-master behavior must be specified.

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Sources

Loudness: EBU R 128 and supporting publications — European Broadcasting Union
E-learning glossary — ScreenSkills