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The emerging Society of Motion Picture and Television Engineers (SMPTE) standard implemented by Microsoft as Windows Media Video (WMV) 9 Advanced Profile. Formally known as SMPTE 421M, VC-1 minimises the complexity of decoding HD content through improved intermediate stage processing and more robust transforms decoding HD video twice as fast as the H.264 standard, while offering 2-to-3 times better compression than MPEG-2 and at a quality claimed to be better than MPEG-4.