IMF for Broadcast & Online: TSP 2121
The creation of our specification IMF builds on the existing IMF standard (ST 2067) developed by the Society of Motion Picture and Television Engineers (SMPTE), which was designed for streamlining the distribution of premium feature film content.
Whilst the foundations of IMF can be applied to most content, there are some ways in which the standards were not well aligned to the needs of broadcasters and online content producers. That’s why the DPP and SMPTE have published:
- TSP 2121-1:2018 IMF Application DPP (ProRes)
- TSP 2121-4:2019 IMF Application Constraint DPP (JPEG2000)
TSP 2121-1 supports the specific needs of broadcasters and online content distributors. It constrains elements of the SMPTE IMF standards and adds features such as ProRes, HLG and control track audio description.
TSP 2121-4 constrains most of the same features as TSP 2121-1, but supports further use cases by enabling the use of an alternative codec, JPEG2000. This specification was developed in collaboration with The North Amercian Broadcasters Association.
TSP 2121 makes it possible to automate the content supply chain, simplify the versioning process, enable workflow efficiencies, and reduce QC and archive storage costs. All while maintaining the quality of the original asset. The result is significant cost, storage and time savings.
DPP Recommendation: Carriage of User Metadata in IMF
IMF makes provisions for some mandatory and some optional user-provided metadata. Adopters of IMF in the broadcast and online distribution industry may require additional metadata to be carried with the bundle. The DPP has therefore published a Recommendation which defines usage of common user metadata elements, and their carriage in SMPTE TSP 2121 IMF Packages.
In particular, it addresses the use-case of carrying metadata intended for downstream packaging into an AMWA AS-11 file.
The DPP Test Lab offers a testing programme for products and services which are designed to support IMF for Broadcast & Online. This allows buyers to choose your products with confidence, knowing they’ll be truly interoperable.
You can find out more about the programme here.