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Many producers distribute the same encoding ladder to all viewers. However, sending a 1080p stream to smartphone viewers may be a waste of bandwidth as both SSIMPLUS and VMAF scores reveal that lower resolution, lower-bandwidth videos deliver similar quality at a lower cost.
This tutorial, from my course Computing and Using Video Quality Metrics, shows you the tests I performed to reach this conclusion with concrete recommendations on how to proceed.
Briefly, the course teaches encoding professionals how to use metrics like SNR, SSIM, VMAF, and SSIMPLUS to guide day-to-day encoding decisions like choosing the optimal encoding settings, creating encoding ladders, and evaluating codecs and encoding tools. It also contains a number of tutorials like this one.
Here’s the tutorial:
