What will be the best to parse x264 bitstream for extracting motion vectors information?

What will be the best way to pars开发者_开发知识库e x264 bitstream for extracting motion vectors information?

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get a JM, find the place where the MV are being read from the bitstream, add the predictors and there you go.

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I'm look for this too. Someone wrote an example. http://victor.csie.org/blog/archives/362

Probably not the best, at least it works.