DS DS/EN 61834-6
DS DSEN 61834-6 2001-OCT-15 Recordng - Helcal-scan dgtal vdeo cassette recordng system usng 635 mm magnetc tape for consumer use 525-60 625-50 1125-60 and 1250-50 systems - Part 6 SDL format
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This part of IEC 61834 describes the format extension, using higher compression to increase recording time and reduce running cost. While all DVCRs must have the capability of recording and/or palyback in SD (SP) mode, this extension is optional.