Hi guys, not entirely sure where this post should sit, so if this is the wrong forum please do move it.

This is a bit of an odd one, I want to be able to extract pixel data from a DNXHD encoded Quicktime. The goal is to try and find out if the video data was encoded full range or legal range. Basically I would like to be able to get the RGB value of pixels to see if black reaches close to 0 at any point, indicating full range, or if significantly higher, indicating legal range.

A bit more detail on this:

We have a pipeline in our film department, part of which is receiving a client quicktime which we in turn use to reference grade dailies to then be sent back to the client for approval. The material 'should' always come in from the client legal range, but because the rest of the pipeline comprises of various legal to full range and back again conversions, its imperative that the material coming in is checked to be actually legal or the rest of the work flow will be compromised. The most practical way to do this would be to run the incoming quicktimes through a script which will quickly and easily tell you if the material is full range or legal range. Manually checking each quicktime on a WFM or similar is unfortunately not practical...

Does anyone know of any way I might be able to extract this kind of data?

Thanks in advance

Jon