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  1. Hi,
    I wondered if it is possible to track the movement direction of the camera in a static environment while decoding AVC. Maybe there is information somewhere where blocks move to?
    Is there anyone that could help me with this question?

    Thanks in advance,

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  2. Information is contained in the motion vectors. Some stream analyzing software e.g. streameye, h264visa allows you to visualize these graphically
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  3. ffdshow can show motion vectors as arrows on the decoded video:

    Click image for larger version

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  4. Thanks for the answers.
    I don't need the visualization, just the data about the motion vectors.
    The ffdshow approach seems to be promising.
    Do you also know how to access the vector information?
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  5. Originally Posted by mrjocke View Post
    Do you also know how to access the vector information?
    I'm not sure what you're asking. You want to analyze the compressed video yourself to get motion vector information? Or are you asking how to configure ffdshow to show the vectors (as in the sample image)?
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