This International Standard specifies the content, format, and recording method of data blocks containing video, audio, and system data on the helical scan digital video cassettes using 6,35 mm tape as defined in IEC 61834-1 for recording MPEG-2 streaming HD signals.
The MPEG-2 streaming HD signals defined in this standard have the following modes:
HD1 mode:
HD1 mode is designed for the following systems
- 525-line progressive with a frame frequency of 59,94 Hz (hereinafter referred to as 480p/60 system)
- 625-line progressive with a frame frequency of 50,00 Hz (hereinafter referred to as 576p/50 system)
- 525-line interlace with a frame frequency of 59,94 Hz (hereinafter referred to as 480i/60 system)
- 625-line interlace with a frame frequency of 50,00 Hz (hereinafter referred to as 576i/50 system)
- 525-line progressive with a frame frequency of 29,97 Hz (hereinafter referred to as 480p/30 system)
- 625-line progressive with a frame frequency of 25,00 Hz (hereinafter referred to as 576p/25 system)
- 750-line progressive with a frame frequency of 29,97 Hz (hereinafter referred to as 720p/30 system)
- 750-line progressive with a frame frequency of 25,00 Hz (hereinafter referred to as 720p/25 system)
- 750-line progressive with a frame frequency of 59,94 Hz (hereinafter referred to as 720p/60 system)
- 750-line progressive with a frame frequency of 50,00 Hz (hereinafter referred to as 720p/50 system)
The main specifications shall be as defined in IEC 61834, Part 9 and 10. Other information, such as details about MPEG-2 stream descriptors, trick play data, system data, etc., are defined in clause 7.
HD2 mode:
HD2 mode is designed for the following systems.
- 1125-line interlace with a frame frequency of 29,97 Hz (hereinafter referred to as 1080i/60 system)
- 1125-line interlace with a frame frequency of 25,00 Hz (hereinafter referred to as 1080i/50 system)
The main specifications for helical recordings and the program track data format shall be as defined in chapter 5 and 6 of this document. Other information, such as details about main data, PES data, search data, subcode data, MPEG-2 stream descriptors, etc., are defined in clause 8.