In all fairness, I felt I had to define the specifics of what was experienced with the Miraizon codec. It is possible to record to ProRes with a Convergent Design O7Q. Before loading the Miraizon codec, O7Q files playback without a problem. After installation of the Miraizon codec, O7Q files won’t play back. Not sure about other problems, if any. Perhaps this is a very specific problem.
Since Apple certifies all uses of its Prores codec, and the Miraizon codec is a reverse engineered, no approved or certified version, I remain dubious and I would urge caution.