Netflix Introduces New Quality Metric

Netflix announced the open-source availability of the Video Multimethod Assessment Fusion, which it’s now using instead of PSNR to analyze the quality of transcodes in its vast catalog. Yesterday, Netflix announced the open-source availability of its new video quality metric, the Video Multimethod Assessment Fusion (VMAF) in a long, explanatory blog post. Netflix uses the…

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What is AV1?

Scheduled to be the first codec released by the Alliance for Open Media, AV1 is positioned to replace VP9 and compete with HEVC. While we don’t know many details yet, the backing of the Alliance should give AV1 a significant competitive advantage. The AV1 codec will be the first codec released by the Alliance for…

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Book Excerpt: VBV Buffer Explained

This article is kind of a prequel to my book, Encoding by the Numbers, which I published in 2016. That is, I published this article to get commentary from folks who read it, which I factored back into my book. Unfortunately, I changed content management systems in 2018 and lost the comments.  One of the…

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The Four Pillars of Video Encoding

  Figure 1. The four critical aspects to consider when encoding a file. Executive Summary: While video quality is always top of mind, consider deliverability, compatibility, and playability before finalizing your encoding presets.  Too often we look at video encoding with a single point of focus; achieving the best possible quality for the lowest possible…

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Handout for Codecs and Packaging 2016

Click below to download the handout. Here’s the description. As video resolutions increase and target playback platforms multiply, video producers must leave their H.264/HLS/HDS comfort zone and expand into HEVC, VP9, and MPEG-DASH. This workshop is divided into multiple segments by target platform to teach you the applicable standards and best strategies for delivering live…

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