Review: V-Nova Perseus: Does its Compression Live Up to the Hype?

London-based V-Nova has made some impressive claims about Perseus, its compression technology. Streaming Media’s preliminary testing shows that it lives up to some of them. V-Nova launched its compression technology, Perseus, on April Fools’ Day 2015, claiming “2x–3x average compression gains, at all quality levels, under practical real-time operating scenarios versus H.264, HEVC and JPEG2000.”…

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…

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…

Book Excerpt: VBV Buffer Explained

One of the topics I’m addressing in my upcoming book is the VBR rate control model, a very complicated concept. Here’s the section in the book, which I’m making available for comments, corrections, and clarifications. I’m pretty sure the technical details about how the model works is correct, but I’m guessing the description and definition…

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…

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…