MXF files contain compressed, encoded and encrypted data streams to reduce the required storage space and prevent unauthorized use. The image part is JPEG 2000 compressed file, and the audio part is linear pulse code modulation.
The encryption standard adopted is AES- 128 bit in CBC mode. The newer SMPTE standard is used to make the suggestions of different tool manufacturers consistent. Interop, the legacy DCP standard still needs the support of DCP players.
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DCP production process
Most producers and distributors rely on digital film coding equipment to make and check DCP packages with quality control before releasing movies. Hardware devices follow the strict guidelines formulated by DCI specification to ensure that all digital imaging devices are compatible. For larger distribution movies, hardware devices usually create a digital movie distribution motherboard.
DCDM is a post-production step before DCP. All the frames are in DPX or TIFF format, and neither sound nor image can be packaged into MXF files. DCP can be encoded directly from DCDM. DCDM is very useful for archiving, and hardware devices can also enjoy global remake.
They can be easily converted into different versions of DCP around the world. For small-scale movies, hardware devices can usually skip DCDM production and start directly from the digital source motherboard of the original movie. DSM can be provided in various formats and color spaces. Therefore, the coding equipment needs to know the color space widely, including using 3D LUT to match accurately.