User guide

4-7

Using the DCP and Self KDM

4.6 Modifying a DCP (Supplemental DCP)

An already created DCP can be modified, for example, to exchange au-

dio, subtitles or certain parts of video. For this the digital cinema deliv-

ery tool provides the option Supplemental DCP (see section “Delivery

Type” on page 3-5). It can be used to create different versions of a DCP,

for instance, for localizations of a feature film.

A DCP made with the option Supplemental DCP from a master DCP

generates anew only the content that was modified. For the unaltered

parts of content it still requires and refers to the content of the master.

In addition, a supplemental DCP will contain all the extra files that are

normally included in a DCP (i.e. CPL, KDMs, PKL, etc.), and thus can

be seen as a DCP of its own.

The purpose of a supplemental DCP is to minimize the time and effort

to encode different versions of the same package and to reduce its

overall size. All cinemas worldwide receive the same international ver-

sion (master DCP) with identical reels and extra files. Depending on the

country a supplemental DCP is provided in addition (normally in a sub-

directory of the master DCP) containing only the relevant changes. To

load the localized version of the DCP the extra files of the supplemental

DCP have to be used. Whenever necessary they reference to the orig-

inal material of the master DCP.

This section describes how to use the supplemental DCP feature of the

digital cinema delivery tool.

4.6.1 Preparations

After loading an already generated DCP (see section “Loading the

DCP” on page 4-3) it can be modified in the timeline of the Edit Tool.

There you can change, for example, the subtitles, certain frames of vid-

eo and the audio reels:

The track files of a DCP should not be submitted to further ren-

dering processes (e.g. effects on audio or video). For this use

the original source project instead.

A loaded DCP can be saved as a project file. This way you can

work on an already finished DCP and save your work’s prog-

ress, e.g. when modifying it.