I was trying out dcpomatic2_map, and hit an error.

Input:

1. OV DCP, single reel
2. VF DCP adding closed captions, multiple reels

The OV contains picture and sound in a single reel. But the VF is in 5 reels, with each reel referencing the same J2K + PCM MXFs, but with entry points and durations set differently. i.e. The VF chops up the OV into 5 reels (to obey the CCAP XML size limit).

When trying to create an OV from the VF's CPL, dcpomatic2_map threw an error:

Could not hard-link asset /output/j2c_49ed2bec-fe1c-492f-932c-2fe5081a017b.mxf: File exists

Indeed, after it's run, the output folder does contain hard links to the J2C and PCM MXFs.

I assume the problem is that dcpomatic2_map didn't notice the j2c asset was used more than once, and tried to copy it multiple times, rather than skip the duplicates.

Complete command line:

/Applications/DCP-o-matic\ 2.16.56.app/Contents/MacOS/dcpomatic2_map -l -o /output -d /OV_DCP -d /VF_DCP /VF_DCP/cpl_f320b012-98af-41dd-81bf-cf83dd29b51c.xml

Both the input OV + VF DCPs are Interop and unencrypted.