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We've been able to take in HD video (1920x1080) and process it successfully using openCV (Emgu in our case), but when we try to create a videowriter to write out the marked-up frames it fails saying that it could not open the codec due to an unspecified error. We had this issue before with a specified framerate parameter being too low, so we tried all combinations of codecs and possible framerates to no avail. However, when we run a video of 320x240 or 640x480 we get no problems with the exact same code. Only when we change the incoming video size to 1920x1080 do we get problems. Does anyone know if this is a bug, or whether the videowriter just doesn't support HD quality video? Or something else?

Any answers you can provide would be greatly appreciated!

Thanks!