For simple, high-level information dumped to file, I can't help wondering if the most suitable thing is an instrumented decoder. Take the reference decoder, add some prints to stdout and you're done. Could take someone familiar with the standard and JM less than a day.
Quantizer level is a tricky one... Qp can vary throughout the frame so you need to derive and report some sort of picture average for Y, Cr and Cb. This implies deeper decoding than just looking at headers.
If this was a question about HEVC, I could help zambelli with some commercial software or at least a trial
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