That’s quite cool. But unfortunately it won’t tell you, without identifying metadata embedded, what colorspace your media is in.
To answer Carmelo’s question. There is no tool that I know of that does this. Something like a dpx sequence is basically a blank slate. Those RGB values could represent anything. The format the media is in can be one indicator however. Don’t see a lot of 4:2:2 P3 material. But basically this is what colorist need to make a concerted effort to track. Naming conventions are a big part of this. And a good eye can usually spot the difference between p3 and 709. And xyz is pretty easy to spot.
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