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Video Encoding
PDF Ebook Video Encoding
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Video Encoding by the Numbers teaches you to optimize the quality and efficiency of your streaming video by objectively detailing the impact of critical configuration options with industry-standard quality metrics like PSNR and SSIMplus. This takes the guesswork out of most encoding decisions and allows readers to achieve the optimal quality/data rate tradeoff.
Since all videos encode differently, the tests detailed in the book involve eight different videos, including movie footage, animations, talking head footage, a music video, and PowerPoint and Camtasia-based videos. The book walks the reader through quality testing, basic encoding configurations, encoding with H.264, HEVC, and VP9, and and encoding for adaptive streaming.
When appropriate, the chapters conclude with a section detailing how to configure the options discussed with FFmpeg, a preferred tool for high-volume video producers, including packaging into HLS and DASH formats (the latter with MP4Box). You’ll also learn how to use key Apple HLS creation and checking tools like Media File Segmenter and Variant Playlist Creator.
Here’s a chapter-by-chapter description.
Chapter 1: Technology Fundamentals. Encoding basics like codecs and container formats for newbies, or for a quick refresher for advanced users.
Chapter 2: Basic File Parameters. File parameters like data rate, resolution, frame rate, and bits-per-pixel defined at a high level.
Chapter 3: Essential Tools. Identifies the tools you’ll need to deliver file information that you simply can’t live without.
Chapter 4: Testing Overview. Covers a range of testing procedures, from choosing a test clip to verifying your encodes before applying the metric.
Chapter 5: Working with Moscow University Video Quality Measurement Tool.
Chapter 6: Working with SSIMWave Quality of Experience Monitor.
Chapter 7: Choosing Data Rate. Now that you know how to use multiple objective benchmarks, you’ll apply that knowledge to choose optimal data rates for your files.
Chapter 8: Bitrate Control. You’ll learn the impact of bitrate control techniques like VBR and CBR on file quality and deliverability.
Chapter 9: I-, B-, P-, and Reference Frames. Rules for choosing key frame and B-frame interval, and the number of reference frames.
Chapter 10: Encoding H.264. Learn how to configure H.264-specific configuration options like profiles, levels, and entropy encoding, and x264 encoding options like presets and tuning.
Chapter 11: Encoding HEVC. Learn where to deploy the HEVC codec, and how to encode with x265, a high-quality, open-source HEVC codec and with the Adobe Media Encoder.
Chapter 12: Encoding VP9. Learn where to deploy the VP9 codec, how quality compares with HEVC and H.264, and how to encode VP9 with FFmpeg.
Chapter 13: Choosing an ABR Technology. Learn how ABR works, and how to choose between technologies like HTTP Live Streaming (HLS), Dynamic Adaptive Streaming over HTTP (DASH), and others.
Chapter 14: Configuring Your Encoding Ladder. Learn how to choose and configure the rungs in your encoding ladder.
Chapter 15: Encoding and Packaging ABR Streams. Learn how to use FFmpeg to create your encoding ladder, and create media and master playlists for your HLS streams. You’ll also get an extensive look at the Apple tools for HLS creation, Media File Segmenter, Variant Playlist Creator, and Media Stream Validator. For DASH, you’ll learn how to use open-source tool MP4Box to create MPD files. �
Chapter 16: Per-title Encoding. You’ll learn what per-title encoding is, how it works, and several techniques for applying it yourself—including capped CRF.
- Sales Rank: #86664 in Books
- Published on: 2016-12-28
- Original language: English
- Dimensions: 9.25" h x .90" w x 7.52" l,
- Binding: Paperback
- 332 pages
Most helpful customer reviews
1 of 1 people found the following review helpful.
Ozer Transforms Video Compression from Alchemy to Science
By Douglas Dixon
Jan Ozer's new book, Video Encoding by the Numbers, is a wonderful resource for anyone doing video compression, from beginner to advanced.
The book packages up Ozer's deep knowledge and experience into a comprehensive review, with special emphasis on the latest technologies, including H.264, HEVC / H.265, and adaptive bitrate streaming.
That in itself would make this book tremendously valuable, but Ozer has augmented the text in two important ways -- by providing extensive examples of using FFmpeg to batch process videos, and by demonstrating the application of objective quality metrics to analyze the video and report its visual quality.
For too long, video compression has seemed to be a form of alchemy, with extensive folklore of mystic incantations required to produce video gold. Even if you could successfully penetrate the basic secrets (including formats and codecs and rates, CBR vs VBR, kbps vs bpp), you would only discover even more obscure deeper levels of parameters (including GOP structure, I-B-P, IDR, and adaptive streaming).
And even if you get the formula correct, how can you then package it up for use, and verify that it's working properly? Video Encoding by the Numbers attacks all these issues.
First, Ozer covers the basics of video compression and associated tools. He does not just provide advice, he backs it up by discussing the results of his extensive testing of compassion tools and options with real-world videos. This work is based on his background in video shooting and production, in reviewing and testing video tools, in consulting to build real-world solutions for compression pipelines, and then sharing his discoveries -- in articles, talks, on his Streaming Learning Center website, and in his books.
Then, to package up the compression process, Ozer demonstrates how to use the free cross-platform FFmpeg tool to perform batch compression, providing example scripts with each technical chapter, again tempered with discussions of his experience in experimenting with the various options.
And most importantly, Ozer grounds the compression process in science by applying objective quality metrics that analyze the video and report its visual quality. This is a huge advance driven by new metrics and tools, moving from simple PSNR to newer metrics including VQM and SSIM. Now you no longer need to sit and watch each compressed video you produce in order to check them (which obviously becomes impossible with multiple output formats and resolutions). Instead, Ozer shows how to use these tools to look for anomalies, and then focus in on the trouble spots.
As a further example of the exhaustive coverage in this book, the final section covers scaling up to streaming delivery, exploring adaptive bitrate approaches, discussing setting up your "encoding ladder" for streaming formats and resolutions, and then concluding by discussing the importance of per-title encoding, using these tools and metrics to find the best solution for each individual video.
It's hard to overstate the usefulness of this book, as a reference for understanding compression technology and trade-offs, as a checklist for best practices, as a guide to more effect batch compression, and as a path forward to a more scientific and objective approach to video compression.
In my case, Jan kindly provided an electronic copy of the book for review (available in PDF format), and I quickly purchased two more paper copies, one to keep and one to share. It's 330 pages with extensive discussion, tables of test results, screenshots of tools, and, of course, example video frames. Now you too can transform your video clips into compressed gold.
1 of 1 people found the following review helpful.
Jan Ozer has tackled the often mysterious world of video encoding and produced a clear and comprehensive guide to creating great
By David S. Trescot
Trying to wrap your head around adaptive b-frame placement in your H264 videos? Wondering which layers you need for high-quality ABR streaming? Jan Ozer has tackled the often mysterious world of video encoding and produced a clear and comprehensive guide to creating great videos. Highly recommended!
1 of 1 people found the following review helpful.
Great book for producers, techies and the streaming curious.
By Wonderslam
I'm a big fan of Jan Ozer's column(s) in Streaming Media Magazine, so I had to pick up this book.
In this book, he breaks this topic down very clearly, so techies and non-technically minded folks can learn the lingo and how things work. Great job, Jan! I use this info in my job every day.
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