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Jan Ozer

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I help companies train new technical hires in streaming media-related positions; I also help companies optimize their codec selections and encoding stacks and evaluate new encoders and codecs. I am a contributing editor to Streaming Media Magazine, writing about codecs and encoding tools. I have written multiple authoritative books on video encoding, including Video Encoding by the Numbers: Eliminate the Guesswork from your Streaming Video (https://amzn.to/3kV6R1j) and Learn to Produce Video with FFmpeg: In Thirty Minutes or Less (https://amzn.to/3ZJih7e). I have multiple courses relating to streaming media production, all available at https://bit.ly/slc_courses. I currently work as www.netint.com as a Senior Director in Marketing.

What Is the Versatile Video Codec?

My 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 producers to start thinking about …

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The State of CMAF: The Holy Grail or Just Another Format?

My 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 Media Application Format (CMAF). While …

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Voronoi-based Objective Quality Metrics for Omnidirectional Video

The 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 at Streaming Media West and …

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Compute VMAF Using FFmpeg on Windows

Author’s note: When this post was written, the Zeranoe FFmpeg Windows download didn’t include VMAF, so you had to either download this version or compile your own. Now the Zeranoe version does include VMAF support; all you need to do is download the models and run the correct command strings. To learn how to do this, check out the blog …

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Discover Six FFmpeg Commands You Can’t Live Without

This blog identifies six incredibly useful FFmpeg commands for transmuxing, extracting audio/video, converting to YUV/Y4M, and scaling to different resolutions. All commands are included in my book, Learn to Produce Videos with FFmpeg In 30 Minutes or Less ($34.95), and course, FFmpeg for Adaptive Bitrate Production ($29.95)  (which includes a PDF copy of the book). Don’t just learn FFmpeg; become an …

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What is Streaming 2019?

At 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 the technology in the first …

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DASH Royalties Resurface in Three Law Suits

We’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, and Crackle. Here’s the rough …

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Preview Lesson: Tuning for Encoding When Measuring with Video Quality Metrics

I’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. It’s a crucial issue to …

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Showtime, Vudu, and Crackle Sued by DASH Patent Holders

Ideahub and Helios Streaming LLC have sued three streaming publishers, Showtime, Vudu, and Crackle (and other Sony Properties), for infringing upon a set of DASH patents. The suits, all filed in Federal District Court in Delaware, came within days after MPEG LA seemingly shuttered its DASH Patent Pool, which now states, “The DASH Patent Portfolio License is no longer offered to …

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The Need for Speed: Demand for Low-Latency Streaming Is High

According to Bitmovin’s “Video Developer Report 2019,” latency was a concern of 54% of all its survey participants. Digging into the numbers, subsequent questions revealed that almost 50% of survey participants planned to implement a low-latency technology over the next 1–2 years, with over 50% seeking latency of under 5 seconds and 30% seeking latency of under 1 second (See …

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