[nevcairiel]

If your player is setup to show 16 as perfect black from a YUV video, then its working perfectly.
99.9% of all consumer content is limited range/video levels, which means 16 is actually supposed to be black.

Those calibration videos are setup to contain values from 0-255, so you can actually see if something is wrong, however a proper calibration should still only show 16-235, so that "video black" is also "actual black"

So in short, everything is working perfectly.

PS:
If the information about the level range is actually contained in the file somehow, LAV Video will set it in the mediatype, and madVR will read it. However madVR is the only renderer which understands it (that i know of)