I had a 45-minute session at Streaming Media West 2019 entitled HOW-TO: Fine-Tuning Your Encoding With Objective Quality Metrics You can download the handout here. This version is about 200 MB because it contains three video demonstrations of the SSIMPLUS VOD Monitor and several other videos, but you’ll need Flash installed to run them (it’s…
DetailsA colleague asked for some resources relating to VMAF. Rather than answer in an email I thought I would create a post around it. Some of these are from Netflix, most from me (Jan Ozer). I’ve broken the items into three groups; Computing VMAF, Using VMAF, and About VMAF. I hope you find this collection useful.…
DetailsMy article, What is VVC, just published on Streaming Media. Briefly, VVC is “codec next” from the perspective of MPEG (see image above) that’s due out in mid-to-late 2020. The Streaming Media article identifies the new “tools” in the codec, early performance results, and what we know about licensing. It’s way too early for most…
DetailsMy article, The State of CMAF: The Holy Grail or Just Another Format?, just published on the Streaming Media website. Here’s the enticing intro: The holy grail of streaming is a single set of files that you can safely deliver to all target endpoints. The most likely candidate to help achieve this is the Common…
DetailsThe Voronoi omnidirectional video metrics have the best correlation between test scores and subjective ratings than all measured 2D and 3D metrics according to its inventors. It’s an open-source metric you can download and learn to use below. I’ll be discussing the Voronoi metric in my upcoming talk on 2D and 3D video quality metrics…
DetailsOne of the gaps in my online course on Video Quality Metrics and my upcoming course on metrics at Streaming Media West was the ability to compute VMAF using FFmpeg on Wind. I know it’s been possible for quite a while now but since I’m not a coder I can’t compile the version of FFmpeg…
DetailsFFMPEG is a free command-line utility that serves as the engine for most of the largest cloud encoding farms in the world, public and private. But it also performs many simple and essential tasks that crop up in a studio or encoding facility, particularly if you do performance or benchmark testing. In this article, I’ll…
DetailsAt its most basic level, streaming media is the delivery of audio and video files from a server to a client over the internet or a cellular data network. The first streaming audio was delivered in 1995, while the first streaming video followed two years later; you can read more about the early history of…
DetailsWe’ve been following the story of DASH royalties since MPEG LA first announced the pool back in 2015. Recently, the pool stopped offering licenses, which seemed to cease any assertions of royalties. But as I just wrote about in Streaming Media magazine, one of the pool members, Helios Streaming along with Ideahub, sued Showtime, Vudu,…
DetailsI’m pulling together some materials for my pre-conference session at Streaming Media West (November 18-20 in Los Angeles) entitled Objective Quality Metrics 2D & 3D: What They Are, How To Compute Them, & How To Use Them. One lesson talks about “tuning” when encoding files to be measured with metrics like PSNR, VMAF, and SSIM.…
Details
