ETSI TS 103 973 defines the Coded Multisource Media Format (CMMF), a container format for carrying coded media from more than one network source at once. See CMMF in the Technology for how it works.
3GPP SA4 describes media delivery using CMMF in TR 26.804 V19.1.0 (Study on 5G media streaming extensions), clause 5.19.1.7; the Release 19 description of Advanced Media Delivery also lists CMMF among its stage 3 items, for media delivery from multiple service endpoints (TR 21.919 clause 11.6); see Media Streaming and Advanced Media Delivery: Specifications and Advanced Media Delivery for that context. 5G-MAG tracks CMMF itself as a repository of Content Delivery Protocols and Tools, alongside FLUTE and ROUTE, rather than as a separate project.
- Specification: ETSI TS 103 973, the Coded Multisource Media Format (CMMF), at V1.2.2 (May 2026).
- In 3GPP: SA4 describes media delivery using CMMF in TR 26.804 V19.1.0, clause 5.19.1.7, and TR 21.919 V19.0.0 clause 11.6 lists CMMF among the stage 3 items.
- In 5G-MAG: CMMF is one of the technologies of Content Delivery Protocols and Tools, with the CMMF Encoder (rt-cmmf-encoder) as its repository.
Specifications
| Specification | Title | Status |
|---|---|---|
| ETSI TS 103 973 | Coded Multisource Media Format (CMMF) for Content Distribution and Delivery | V1.2.2 (May 2026) |
For the publication history of the specification, see the Release history.
Related
- Content Delivery Protocols and Tools: Specifications: the wider specification list this container sits alongside
- Media Streaming and Advanced Media Delivery: Specifications: the 3GPP SA4 Advanced Media Delivery work that references CMMF
- CMMF: Technology: how CMMF works
- Content Delivery Protocols and Tools (Reference Tools): the CMMF Encoder reference implementation
Sources for this page
- Specification and version: ETSI TS 103 973 V1.2.2, cover page and History.
- In 3GPP: TR 26.804 V19.1.0, clause 5.19.1.7; TR 21.919 V19.0.0, clause 11.6.