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| | Serial Digital Interface - Wikipedia, the free encyclopedia |
 | | A more recent interface, consisting of a single 2.97 Gbit/s serial link, is standardized in SMPTE 424M. |
 | | In HD interfaces, each datastream has its own sample numbering--so the 0th sample of the Y datastream is the Y sample, the next sample the Y' sample, etc. Likewise, the first sample in the C datastream is Cb, followed by Cr, followed by Cb again. |
 | | With the introduction of dual link interfaces, and segmented-frame standards, this is no longer possible; thus the VPID standard (defined by SMPTE 352M) provides a way to uniquely and unambiguously identify the format of the video payload. |
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