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Where is Dolby Vision metadata stored in an IMF package?

Summary

Dolby Vision metadata is typically embedded directly in the VIDEO.mxf file within an IMF package and is not saved in any XML files. It can be extracted or validated using Metafier. However, a newer option introduced in DaVinci Resolve 20 allows metadata to be packaged in a separate track file, compliant with SMPTE ST 2067-202:2023 — though studio approval should be confirmed before use.

Who this is for

Post-production supervisors, colorists, mastering engineers, and technical leads working with Dolby Vision IMF deliverables.

Background

In standard Dolby Vision IMF workflows, dynamic metadata (such as L6 trims or L12 metadata) is embedded within the essence of the VIDEO.mxf file. This differs from other IMF metadata, which may reside in XML CPL or RPL files.

Main content

Dolby Vision metadata is not stored in any of the XML files inside the IMF package. Instead, it is embedded directly within the VIDEO.mxf file.

You can extract or validate this embedded metadata using Metafier. For guidance, refer to our tutorial video on extracting and validating Dolby Vision metadata from the VIDEO.mxf file in an IMF package.

Note:
Metafier validates only the Dolby Vision metadata embedded in the VIDEO.mxf file. It does not assess the overall validity or compliance of the IMF package structure.

Additional information :
Blackmagic Design has updated DaVinci Resolve 20 and the newer versions to support packaging Dolby Vision metadata in a separate track file, in accordance with SMPTE ST 2067-202:2023. This means the metadata may no longer be required to be embedded in the VIDEO.mxf file if this new method is used.

However, this is a newer implementation and may not be supported by all studios or delivery pipelines.
→ Always confirm with your studio or delivery partner before using this feature.

Summary and closing

By default, Dolby Vision metadata resides in the VIDEO.mxf file of an IMF package and can be validated using Metafier. With DaVinci Resolve 20, an alternative method allows metadata to be packaged separately per SMPTE ST 2067-202:2023 — but studio approval should be obtained before use.

If you have any questions about Dolby Vision metadata in IMF, feel free to post them in our Dolby Vision Post Production Forum or share your findings with the Dolby Creators Community on Discord.