This part of IEC 61834 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. The 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 field frequency of 59,94 Hz (hereinafter referred to as 480i/60 system) • 625-line interlace with a field 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 61834-9 and IEC 61834-10.. Other information, such as details about MPEG-2 stream descriptors, trick play data, system data, etc., are defined in Clause 7. The HD2 mode is designed for the following systems: • 1125-line interlace with a field frequency of 59,94 Hz (hereinafter referred to as 1080i/60 system) 2 HDV is the trademark of Sony Corporation and Victor Company of Japan, Limited (JVC). This is a preview - click here to buy the full publication61834-11 © IEC:2008(E) – 11 – • 1125-line interlace with a field frequency of 50,00 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 Clauses 5 and 6 of this standard. Other information, such as details about main data, PES data, search data, subcode data, MPEG-2 stream descriptors, etc., are defined in Clause 8.