12. Revision history

This section describes the changes made in revisions of this document. Changes were not tracked prior to revision 01.20.02. The following table lists the changes by revisions number.

Document revision Changes
01.20.02

The following sections were added:
4.12 Compatibility Object (optional, only 1)
4.13 Advanced Content Encryption Object (optional, 0 or 1)
7.3.2.6 ASF_Payload_Extension_System_Encryption_Sample_ID
7.5 Pixel aspect ratio
8.2.16 Ordering of payloads and media objects in packets
10.7 Advanced Content Encryption Object System ID GUIDs (subsequent topics were renumbered)
12 Revision history

The following section was removed:
3.16 Alternate Extended Content Encryption Object (optional, 0 to many)(subsequent topics were renumbered)

The following sections include changes:
3.3 - Provided additional information on valid stream numbering
4.3 - Changed references to Advanced Mutual Exclusion Object to the correct name, Group Mutual Exclusion Object
6.1 - Clarified that the Packet Number field references the number of the packet that contains the closest past key frame.
7.3.2.3 - Added the Interlaced repeat first field flag. Provided definitions for all fields in this section
10.2 - Removed the GUID for the ASF_Alternate_Extended_Content_Encryption_Object
10.3 - Corrected an error in the GUID value specified for the ASF_Media_Object_Index_Parameters_Object
10.3 - Added the GUID for the ASF_Compatibility_Object
10.3 and 10.13 Updated the names associated with GUIDs to maintain consistency with other names in this specification

01.20.03

End user license agreement changed to remove a restriction about using this specification to build solutions primarily designed to distribute content.