ISO 26430-4:2009定义了数字电影应用中单个日志记录和这些记录序列的XML结构和模式。虽然并非所有日志记录都需要身份验证，但本规范规定使用数字签名对记录和记录序列进行可选身份验证。认证要求由单独的应用程序规范确定。 ISO 26430-4:2009未定义通信协议，但仅限于指定日志记录及其内容的结构和格式。 ISO 26430- 4:2009未定义设备内部使用的格式；它定义了日志记录与其他设备交换时使用的格式。

ISO 26430-4:2009 defines XML structures and schema for individual log records and sequences of those records in digital cinema applications. While not all log records require authentication, this specification provides for optional authentication of records and sequences of records, using digital signatures. Authentication requirements are established by separate application specifications. ISO 26430-4:2009 does not define a communications protocol, but is limited to specifying the structure and format of log records and their content. ISO 26430-4:2009 does not define a format for devices to use internally; it defines a format to be used when log records are interchanged with other devices.