A while back, we wrote:
“Michael Zink and Michael Smith received the Journal Certificate of Merit for their paper “On the Calculation and Usage of HDR Static Content Metadata,” published in the SMPTE Motion Imaging Journal in August 2021. After analyzing over 200 titles from Warner Brothers’ catalogue, they proposed a method for calculating the static metada for HDR10 content that eliminated outlier values, small bright pixels that fall outside the average.”
MaxFALL and MaxCLL metadata are important because they help ensure that creative intent is preserved across displays of varying capabilities, particularly consumer displays with less brightness and contrast than the reference display the content was mastered to. Here are a few examples showing how as few as one or two pixels can potentially fool the end-user display into dimming, ruining the viewer experience. Apparently, many TVs still ignore metadata altogether, another possible reason so many consumers complain that their picture is too dark.
Do you embed metadata into your own videos?
The Daejeon Chronicles 
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