All commercial video, for historical reasons, defines luminance level 16 as black and 235 as white. These are "standard" video levels. When converting to RGB, PCs and some media players allow you to choose to output 0 as black and 255 as white, which is better for photos, as that is how they are stored, but not ideal for video because, in the conversion, you inevitably end up with uneven steps between levels. Also, if you calibrate your display for these levels, video level sources will be "washed out" - black will be grey and white will dull.
As to how you would do it, you would find a setting on your source or AVR. If you do not set RGB Enhanced any proper player will use standard or "video" levels, but with PCs you need to be more careful as they will use Enhanced by default if they don't realise they have a TV/projector connected and sometimes even then.
Last edited by jong1; 10-02-2016 at 03:06 AM.