The non-standard preferences are shown in Figure 11.12, “Non-standard preferences”.

This tab contains preferences which enable DCP-o-matic to make DCPs with properties that are non-standard or unusual. Think carefully before changing these preferences, as DCP-o-matic may then make DCPs which do not play correctly on some projection systems.

Maximum JPEG2000 bandwidth specifies the maximum bit-rate of JPEG2000 that DCP-o-matic will allow you to create. You are advised to leave this at 250Mbit/s in normal use for maximum DCP compatibility.

Maximum MPEG2 bit rate is the equivalent for MPEG2 DCPs; I am not aware of a specified maximum for MPEG2 DCPs.

Allow any DCP frame rate removes the limits on the DCP video frame rates that DCP-o-matic will create. This may be useful for experimentation. Again, you are strongly advised to leave this unticked for normal use.

Ticking Allow full-frame and non-standard container ratios allows containers other than ‘Flat’ (1.85:1) and ‘Scope’ (2.39:1).

Ticking Allow creation of DCPs with 96kHz audio enables 96kHz as an audio sampling rate option. This is theoretically supported by the DCP standards but rarely used in practice.

Allow mapping to all audio channels will include in the audio mappings some channels which are usually silent (8, 9 and 15).

Allow use of SMPTE Bv2.0 adds an option to disable the use of MCASubDescriptor tags for audio.

ISDCF name part length sets how long the film name can be in the ISDCF name. 14 is the recommended maximum, but longer names should not (in theory) case problems.