Wednesday, April 04, 2007

OpenCV camera and AVI input

To convert a video to a format that OpenCV can read:
  $ mencoder in.avi -ovc raw -vf format=i420 -o out.avi
This is necessary because OpenCV uses platform specific video libraries, and the intersection of their supported formats is DIB/I420/IYUV. To capture input from a camera or an AVI file, use the following C++ code: [1]. To capture frames in a nonblocking manner in Python, use: [2] with Gary Bishop's cvtypes [3].

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