If I have a QT video on a page (where QT is a requirement that can't be changed) how can I grab the pixel data of the current frame that is being shown with canvas? I am aware that this is possible with getImage(videoElement, .....) but I am looking for a solution that uses QT.
If getting the pixel data is not possible then is it possible to take a screenshot of the page using canvas and trim it perhaps?
Or am I going about this the wrong way and don't need to use canvas at all?
This is not possible with canvas. The function you are referring to has nothing to do with canvas, it has to do with the video element. The video element returns a picture that the canvas can use, and the QT object (or embed) does not.