ISO 26429-3:2008 pdf download – Digital cinema (D-cinema) packaging — Part 3: Sound and picture track file.
4.3.5 Partitions A Track File shall have three partitions: Header, Body and Footer. The closed and complete Header Metadata shall be carried in the Header Partition, the Essence Container shall be contained in the single Body Partition and the Index Table Segment(s) shall be carried in the Footer Partition (see Section 4.3.6 following). When possible, Sound and other Essence Partitions should have the same duration as the Picture Essence Partitions to which they relate. Track Files shall conclude with a Random Index Pack per SMPTE 377M. 4.3.6 Index Tables Track Files shall include standard MXF Index Tables per SMPTE 377M. These Index Tables shall be divided into one or more Index Table Segments. NOTE – Large VBR files may require multiple Index Table Segments due to segment space limitations. See SMPTE 377M for details. Each Index Segment shall be carried in the Footer Partition. 4.3.7 KAG Size Track Files shall employ the default KLV Alignment Grid of 1 — see “Key Alignment Grid” in SMPTE 377M. 4.3.8 Essence Kinds Within a Track File, all Essence Containers of the same kind (Picture or Sound) shall be of the same essence type, e.g. JPEG2000, as defined by the relevant property of the essence descriptors. 4.3.8.1 Edit Rate All essence in a Track File shall have the same edit rate. 4.3.9 Encryption Track Files may include Essence Containers that have been subject to an encryption process. The Essence Container shall identify that the essence has been encrypted, but the definition of the encryption process is beyond the scope of this standard.
5.1 Picture 5.1.1 General Track Files are compression-agnostic. Each Content Package of the Picture Track File’s essence container shall contain one MXF GC Picture Item, each of which contains a single GC Picture Element. 5.1.2 Picture Parameters All frames in a Picture Track File shall share the same image structure. 5.1.3 Picture Packetization Picture essence shall be encoded in KLV Packets using a frame-based mapping and shall be indexed accordingly. 5.2 Sound 5.2.1 General Track Files are sound format-agnostic. Each Content Package of the Sound Track File’s essence container shall contain one MXF GC Sound Item, each of which contains a single GC Sound Element. 5.2.2 Sound Sampling All samples within a Sound Track shall have the same sample rate and bit depth.