PDX Video Tech 2018 #1 (Intel)

Towards Measuring Perceptual Video Quality & Why
Vasavee Vijayaraghavan, Cloud Media Solutions Engineer @ Intel
Video quality measurement is an essential step in any media pipeline. There are quite a few objective metrics available today including well known SSIM & PSNR. These objective metrics are not real time to be used in a live encoder workflow, but fast enough to do quick offline video quality analysis. The challenge with such objective metrics though, is that they are not truly representative of video quality as our human eyes perceive it, thus making it hard for optimizations such as bitrate reduction.
To make decisions such as adding or reducing a certain amount of bitrate while maintaining the same subjective video quality, we need to rely on alternative methods. This talk will thus focus on understanding perceptual video quality and evaluating such alternative methods to make reliable decisions. Among many insights that will be shared, some of them will include: BD-Rate curves, existing rate control methods, gaps in using objective video quality metrics, perceptual video quality evaluation tools & benefits, using alternative methods.