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If it’s the same codec, why are there different Windows Media Video 9 and VC-1 Encoders?

April 26, 2017codec different encoders media VC-1 video Windows

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If it’s the same codec, why are there different Windows Media Video 9 and VC-1 Encoders?

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All that said, there is one last practical difference between WMV 9 and VC-1: Encoders that call it VC-1 are normally based on the newer, faster, higher quality, more flexible VC-1 Encoder SDK. This isn’t about a change in the codec standard, just the usual improvement of encoder implementations over time, like we saw with the Format SDK 9, 9,5, and 11 releases, and will be seeing again in future releases. Here’s a comparison of the gains from the initial release (1st generation) to VC-1 Encoder SDK (4th generation).