September, 2020

• 20 September

  Streaming Media Bootcamps at Streaming Media West

  

  I’m teaching two boot camps (virtually) at Streaming Media West, one for VOD and the other for live streaming; each costs $199. The courses are designed for newbies who need to get up to speed quickly on these topics. Here’s the information for both. W1. Streaming Media Bootcamp, Part 1: Encoding, Packaging, And Delivery For VOD Monday, October 5: 8:00 …

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• 15 September

  Video Quality Metrics: One Number Doesn’t Cut It

  

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• 9 September

  Webinar: Choose and Use the Best AV1 Codec

  

  Jan Ozer here. I spent the last 2 months working with four AV1 codecs, benchmarking them against each other and x264 and x265. I’m presenting my findings in this for-fee 75-minute webinar ($149.99).  There are two parts; the first shares what I learned about the codecs, and the second details what I learned about encoding with them and creating the …

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• 2 September

  Bash Scripting with Wildcards for FFmpeg on Ubuntu and Mac

  

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August, 2020

• 21 August

  Lesson of the Week: Set I-frame Interval in Seconds not Frames

  

  This lesson is derived from my book, Learn to Produce Videos with FFmpeg In 30 Minutes or Less ($34.95), and my course, FFmpeg for Adaptive Bitrate Production ($29.95)  (which includes a PDF copy of the book). Don’t just learn FFmpeg; become an expert in video compression.  Overview: Setting your I-frame interval in seconds rather than frames allows you to use …

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• 21 August

  Introducing ITU-T Metrics P.1203 and P.1204

  

  While standards-based video codecs like H.264 and HEVC tend to dominate, standards-based video quality metrics have never risen to the same usage or attention level. With two innovative and highly accurate metrics now available from the ITU-T, this may change in the near term. Briefly, these models are: ITU-T Rec. P.1203, which calculates the quality of HTTP Adaptive Streaming (HAS) …

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• 7 August

  Lesson of the Week: Compute VMAF with FFmpeg on Windows

  

  Note: This update details how to compute VMAF with FFmpeg on Windows. From my perspective, this feature has gotten progressively less usable and increasingly frustrating. Documentation is poor and the syntax is idiosyncratic and hard to use. If you have any alternative, like Moscow State University’s Video Quality Measurement Tool, I would spend the money and get something that works …

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July, 2020

• 29 July

  I Analyzed LCEVC with V-Nova and the Results Were Impressive

  

  Just a quick note to let you know that I’ve published a comprehensive report that documents the testing, quality, and performance of the Low Complexity Enhanced Video Codec (LCEVC) as developed by V-Nova and in the process of becoming standardized by MPEG. By way of background, I’ve been consulting with V-Nova to test LCEVC using a range of test files …

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• 28 July

  Zeranoe Resolves AV1 Issue; Now Faster Than aomenc.

  

  Previous tests presented here showed that a Windows version of FFmpeg compiled by Zeranoe was about four times slower than a version compiled by a colleague who works in an OTT organization. Since then, Miguel Perez contacted the FFmpeg organization and Zeranoe, who researched the issue, recompiled, and created a new download that resolves the problem.  To test the new …

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• 23 July

  AV1 Now Only 2X Slower Than x265

  

  AV1 encoding on Windows is now only 2x slower than x265. With a properly compiled version of FFmpeg, encoding performance is slightly faster than the Alliance for Open Media’s encoder, though output quality is very slightly lower. Congrats to AOM for delivering on their promise to get encoding times down. Thanks for all the help I got from multiple sources, …

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