FFmpeg can compute various visual quality metrics such as PSNR, SSIM, and VMAF using two existing encodings in a separate command line after encoding has finished. This is okay for offline or VOD use cases, but not for livestreaming where we might want to compute quality metrics in real time.
Also: This hidden iPhone feature keeps your private apps completely out of sight - how I use it，更多细节参见heLLoword翻译
，这一点在手游中也有详细论述
Sabalenka and Osaka, both four-time grand slam title winners, were meeting for the first time since 2018, when the Japanese won at the US Open en route to her maiden major title, but the world No 1’s power proved too much for one of her predecessors.，这一点在新闻中也有详细论述
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