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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.

Talking on VMAF at the NAB Streaming Summit

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 cover what VMAF is, how …

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Free Video: Scaling and Letterboxing in FFmpeg

Embedded below is a free lesson from my course, Produce Videos with FFmpeg: The Beginner’s Course (http://bit.ly/learn_ffmpeg). The previous lesson in the course describes when you can use the -s command to set resolution; this lesson details your options when you can’t. This typically occurs when the display aspect ratio of your output is different from your input, which happens often …

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New Course: Encoding and Packaging for Multiple Screen Delivery

I’m launching a new course entitled Encoding and Packaging for Multiple Screen Delivery. It’s an advanced course detailing how to create and configure encoding ladders using objective quality metrics like VMAF, packaging for DASH/HLS (both static and dynamic), CMAF, per-title encoding, and more. The course is designed for professionals who need to get up to speed on these topics and …

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Interview with Sisvel CEO Mattia Fogliacco About New VP9 and AV1 Patent Pools

In this video, I interviewed Sisvel CEO Mattia Fogliacco about the new VP9 and AV1 patent pools. Our discussion covered: Background on Sisvel Due diligence performed before Sisvel formulated the pool to confirm the validity of their patents Details about the royalty structure and what’s covered by the license (and what’s not covered) The image atop this article comes from …

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Sisvel Announces Patent Pools for VP9 and AV1

Luxembourg-based Sisvel International SA announced patent pools for VP9 and AV1 yesterday targeted at consumer display devices (smartphones, TVs, etc) and consumer non-display devices (set-top boxes and OTT devices). Here’s what we know from this article on Streaming Media) and this Q&A. The standard rate for VP9 is € 0.24 for display devices and € 0.08 for non-display devices, while …

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Fixing FileZilla Write Permission Errors in AWS Instances

My article How to Launch a Cloud Encoding Computer just posted on the Streaming Media Global site. Good thing, too, because I had just started a consulting project that required setting up and encoding on multiple AWS instances. Always handy to have a step-by-step guide, so I printed the article draft and went through it point by point to get …

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Video – Two Free Video Analysis Tools; MediaInfo and Bitrate Viewer

The video below shows two tools that I’ve installed on every computer that will run them; MediaInfo on all Windows, Linux, and Mac workstations, and Bitrate Viewer, which is Windows only. If you don’t know about these tools, you’ll find the seven-minute video very, very useful. As a preview, MediaInfo provides information about my H.264, HEVC, VP9, and AV1-encoded files …

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Convert a Windows Folder With a One-Line For Loop FFmpeg Command

I just finished my Produce Videos with FFmpeg course which I recorded with Camtasia, edited in Adobe Premiere Pro, and output in the Adobe Media Encoder (AME). I outputted from AME at about 10 Mbps to ensure quality, but now I’m left with 3 GB of files to upload. I know the data rate is unnecessarily high, but AME doesn’t …

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Streaming Learning Center Launches First FFmpeg Course

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AV1 Encoding and 4K

A couple of additional data points on AV1 encoding as follow-ups to my Streaming Media article here. First, a colleague asked about 4K encoding times on Twitter. Second, a reader recommended using the row-mt switch for VP9. So, I encoded a ten-second 4K test file on the same single-CPU ZBook as the Streaming Media article. I used the same basic …

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