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I have a QGLWidget in which I am rendering a dynamic mesh. What I would like to do is to record a video of what I am viewing in this window. I would like to do it with the low-level multimedia libraries of Qt, if possible, or the high-level Phonon.
Many thanks for your ideas!
In the latest versions of QT you have a QGLFrameBuffer object, you can render to this offscreen and then simply convert to a QImage.
Then it’s reasonably simple to use ffmpeg to ewncode each QImage into a video http://code.google.com/p/qtffmpegwrapper/