本标准规定了包含视频、音频和相关数据的数据块的内容、格式和记录方法，这些数据块在ANSI/SMPTE 263M规定的盒式磁带中的12.65-mm（0.5-in）磁带上形成螺旋记录。此外，本标准规定了纵向记录的内容、格式和记录方法，该纵向记录包含与螺旋记录相关联的扫描头的跟踪信息，以及纵向线索音频、时间和控制码轨迹。

This standard specifies the content, format, and recording method of the data blocks containing video, audio, and associated data which form the helical records on 12.65-mm (0.5-in) tape in cassettes as specified in ANSI/SMPTE 263M. In addition, this standard specifies the content, format, and recording method of the longitudinal record containing tracking information for the scanning head associated with the helical records, and also the longitudinal cue audio, and time and control code tracks.