Articles

Like most encoding professionals, I’ve followed AI-related streaming advancements for the last few years. I’m presenting a session entitled “Beyond the Hype: A Critical Look at AI in Video Streaming” at Dan Rayburn’s Streaming Summit at NAB in Las Vegas on Monday, April 15, from 1:30 PM to 2:00 PM PST (room W110). I will cover ingest to playback, including …

Watch out Saquon! Sorry for the spring training, pre-combine sports reference, but it seems appropriate.  I’m parting company with NETINT effective March 30, 2024. I want to thank CEO Alex Liu and my boss, Mark Donnigan, for the opportunity to work with NETINT for the last 18 months. One of my initial responsibilities was developing NETINT’s editorial strategy and increasing …

The mandate for streaming producers hasn’t changed since we delivered RealVideo streams targeted at 28.8 modems; that is, we must produce the absolute best quality video at the lowest possible bandwidth. With cost control top of mind for many streaming producers, let’s explore five codec-related options to cut bandwidth costs while maintaining quality. For each, I’ll consider the factors summarized …

Let’s start this article with a quiz regarding how the quality and encoding speed of two-pass VBR (variable bitrate encoding) compares to single-pass VBR (that’s right, VBR in both cases). Choose the best answer. Two-pass takes twice as long as single-pass but delivers significantly better overall quality. Two-pass takes slightly longer than single-pass but delivers significantly better quality. Two-pass takes …

We’ve updated several lessons in our Video Quality Metrics course, including some relating to the Moscow State University Video Quality Measurement Tool.  The Moscow State University (MSU) Video Quality Measurement Tool (VQMT) is a tool that I use almost every day to analyze and compare encoded files. Our course, Computing and Using Video Quality Metrics: A Course for Encoding Professionals, …

This freely downloadable report measures the qualitative impact of GOP sizes on animated, general entertainment, sports, and office footage for H.264 and HEVC. One of the most fundamental encoding decisions is GOP size or the frequency of I-frames in our encoded files. I-frames, also called keyframes, start each “group of pictures” comprised of I-, B-, and P-frames. Most of the …

Here are the free “must-have” apps I install on every Windows computer (and three for-fee tools for deeper analysis).  I just received a new Dell Precision 7820 server and had to prepare it for video transcoding and analysis. Here are the tools I installed to get up and running. I present the list and links first and then a list …

Learn to use Capped CRF with SVT-AV1 and FFmpeg for live transcoding, including how capped CRF compares to VBR and CBR. All tests and results are available in downloadable PDF. Capped CRF is an alternative to VBR and CBR that saves bandwidth on easy-to-encode sequences and preserves quality on hard-to-encode sequences. Our tests with SVT-AV1 and FFmpeg show: Performance: Capped …

There are four bitrate control techniques worth considering for live encoding/transcoding using the SVT-AV1 codec. These are: Capped CRF VBR Capped VBR Constrained VBR Here’s what I found: Overall: Capped CRF shows promise with significant bitrate savings, good quality retention, and the best overall performance by ~10 – 25% (meaning more streams from the same hardware). VBR was generally the …

A recent review from The Ohio State University’s Derrick Freeman highlighted what he learned from Streaming Media 101. Below is his review, which I’ve chopped up into bullet points. “I just recently earned my certificate from Jan Ozer’s “Streaming Media 101: Technical Onboarding for Streaming Media Professionals” e-learning course at Streaming Learning Center. I was amazed at how much I …