A Dolby Vision Mezzanine file or HDR service master is used to create all downstream deliverables and is what is required for encoding. There are several Dolby Vision mezzanine formats that are widely used today, including (but not limited to):

• JPEG2000 MXF OP1A, Dolby Vision metadata interleaved
• IMF package, Dolby Vision metadata interleaved to MXF OP1A
• QuickTime ProRes 4444 XQ, Dolby Vision metadata as sidecar XML

More info on the Mezzanine specifications can be found in the Dolby Vision 4.0 Generic Studio Spec article.


Any Mezzanine file can be edited in mastering tools like R&S Clipster, Colorfront Transkoder, MTI Cortex, Marquis MIST,  DaVinci Resolve and others. For more tools supporting Dolby Vision packaging and mastering, please refer to the article Dolby Vision compatible Color Grading & Packaging Systems.
Further, Mezzinator, which is part of the Dolby Vision Professional Tools is also a great tool to perform simple trim operations on Dolby Vision MXF Mezzanine files, especially if you just want to trim the head/tail of a show.
When using Mezzinator for trimming, only the set range of frames will be specified without decoding/re-encoding to preserve quality and efficiency. 
 

Trimming a Dolby Vision Mezzanine file using Mezzinator

To trim a Mezzanine file use the "--frames" command.

./mezzinator <input.mxf> <output.mxf> --frames <inpoint> <outpoint>

 

• <input.mxf> - The Mezzanine file to be trimmed (full path and file name required)
• <output.mxf> - The trimmed Mezzanine file (full path and file name required)
• <inpoint> - The frame number of the first frame of the trimmed Mezzanine file
• <outpoint> - The frame number of the last frame of the trimmed Mezzanine file