Reviewer Ian Kennedy recently reviewed Learn to Produce Video with FFmpeg on Amazon, and he hit the nail on the head in his five-star review, saying: Who this book is for: 1) The decision maker who may be skeptical about using FFmpeg in a production environment compared to a turn-key commercial solution. 2) The video-adjacent…
So, there I was downloading videos from YouTube to include in a PowerPoint for a training course I was producing. Unfortunately, my download tool, wondershare’s excellent video converter, downloaded separate audio and video streams, the video in an MP4 wrapper and the audio as an MP3 file. So I had to mux the two to…
Streaming Media West is coming up next month in the City of Los Angeles (as opposed to Huntington Beach where it’s been the last few years). Specifically, it’s at the Westin Bonaventure on November 19-20 (Tuesday/Wednesday) with pre-conference sessions on Monday the 18th. I’ll be my normal busy self with two pre-conference sessions and several…
Many producers distribute the same encoding ladder to all viewers. However, sending a 1080p stream to smartphone viewers may be a waste of bandwidth as both SSIMPLUS and VMAF scores reveal that lower resolution, lower-bandwidth videos deliver similar quality at a lower cost. This tutorial, from my course Computing and Using Video Quality Metrics, shows…
Derrick Freeman is a luminary in the Streaming Video world, an expert on Wowza Streaming Engine and Telestream Wirecast (among other products) who has consulted with and instructed dozens of companies, universities, and other organizations. When Derrick needed to learn how to use FFmpeg, he purchased a copy of my book, Learn to Produce Video…
This article discusses the evolution of the encoding ladder from the fixed ladder presented by Apple in Tech Note TN2224 to context-aware-encoding, which creates a ladder that not only considers the encoding complexity of the content, but also the producer’s QoE and QoS metrics. The encoding ladder embodies the most significant encoding decisions made by…
After three years or so in gestation, per-title encoding is becoming a required feature on most encoding platforms, whether in-house software or SaaS cloud providers. In this buyers’ guide, we’ll review a list of features to look for in per-title encoding offerings and present a testing structure to evaluate the contenders that make it to…
Here’s the description; link to the PDF is below: W1. Introduction To ABR Production & Delivery Monday, May 6: 9:00 a.m. – 12:00 p.m. This course helps those new to streaming media get familiar with the relevant terms, concepts, and technologies. The session begins with a definition of terms like codecs, container formats, and adaptive bitrate…
A few weeks ago, I wrote about the VMAF Phone Model which measures VMAF score for viewers watching on a mobile phone. Since then, I gave a presentation at NAB on VMAF and ran some calculations comparing the phone and default models. I share those below. First, have a quick look at the three VMAF…
Just a quick note to let you know that I’ll be speaking at the NAB Streaming Summit on Using VMAF, Netflix’s Video Encoding Metric to Measure QoE. Description: Netflix uses video quality metric VMAF that combines human vision modeling with machine learning, to make automated encoding decisions in their per-title/per-scene encoding workflow. This presentation will…