Editing Digital Picture Exchange (section)

== Metadata and standard flexibility ==
[[SMPTE]] specifications dictate a mild number of compulsory metadata, like image resolution, [[color space]] details (channel depth, colorimetric metric, etc.), number of planes/subimages, as well as original filename and creation date/time, creator's name, project name, [[copyright]] information, and so on.

Furthermore, a couple of industry-specific metadata areas are present: Motion-Picture and Television ones. They are either used only if the picture has enough embedded information relevant to that specific industry, otherwise are left "empty". For example, Motion-Picture-specific metadata includes perforation-exact [[35mm format|film]] [[KeyKode]] (if the image comes from a film scan), camera shutter angle, slate information and frame positioning within a frame sequence. On the other side, Television metadata includes full [[SMPTE time code]], video overscan and field information, and signal/colour level information.

A third, variable-size metadata area, which is user-definable, exists. Third-party applications/software occasionally use this area to store additional information; for example, when the DPX stores images with technical specifications far away from the original standard (like pictures coded in the [[International Commission on Illumination|CIE]] ''[[CIE 1931 color space|XYZ]]'' color space, or [[Bayer filter|Bayer]]-patterned raw frames from specific digital cameras like the [[Arriflex D-21]]).

SMPTE ST 268-2:2018 defines a standards-based metadata section that supports [[Extensible Metadata Platform]], [[XML]], and [[KLV]] metadata representations.