Search Results for: x265

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How to Choose Your Bitrate Control Technique

This article is derived from a lesson in Streaming Media 101: Technical Onboarding for Streaming Media Professionals. If you’re looking for an efficient way to get up to speed on key streaming terms, technologies, workflows, and best practices, check out the course here.  Every time you encode a video file with a distribution-oriented codec like H.264, HEVC, VP9, or AV1, …

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The past, present, and future of per-title encoding

Figure 2. Finding the Convex Hull.

Maya Angelou once said that “You can’t really know where you are going until you know where you have been,” and so it is with per-title encoding. What began as a one-dimensional data rate adjustment that reflected the simple reality that all videos encode differently is now a complex analysis that incorporates frame rate, resolution, color gamut, and dynamic ranges, …

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Real-World Bandwidth Savings from VP9, HEVC, and AV1

This article is about a video lesson that computes the bandwidths savings afforded by the FFmpeg-based implementations of VP9 (libvpx-VP9), H.264 (x264), HEVC (x265), and AV1 (libaom-AV1). The lesson uses the Netflix convex hull analysis to build unique encoding ladders for each test clip and codec and shows why BD-Rate figures don’t accurately predict real-world savings. Towards the end, it …

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8K Video; Per-Title Encoding; HDR Metrics

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Beginner’s Guide to Codecs

This post provides an introduction to video codecs. It’s an entry-level article designed to help streaming newbies understand what codecs are, what they do, how to compare them, and why they succeed or fail.  Video codecs are compression technologies that reduce the bitrate of digital video to manageable sizes. Video codecs are not only central to streaming, but they’re also …

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Presentation Handouts

There are the handouts from the last few Streaming Media Events. They’re typically long and very detailed, so provide a lot of data and other information. I’ve segmented them by subject and included the videos where available. I hope you find this information useful. Production and Delivery FFmpeg Visual Quality Metrics Per-Title Encoding Hardware Transcoding Production and Delivery Streaming Media …

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Codec-Related Articles on the Streaming Learning Center

Here are some of the most popular codec-related articles that I’ve written lately for this site, Streaming Media Magazine, and some other outlets. General The Streaming Codec Landscape in 2021 – (January 2021)  By any measure, 2020 was a hectic year for video codecs or the compression technologies that drive streaming video. This year saw the launch of two standards-based codecs …

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Top Encoding-Related Articles on the Streaming Learning Center

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AV1 Encoding with aomenc.exe, libaom-AV1, SVT-AV1, and Aurora1

While 2018 was the year AV1 became known, 2020 will be the year that AV1 became interesting, primarily because of three developments. First, in early 2020, AV1-enabled smart TVs hit the market, right on the 2-year schedule announced back in 2018 by the Alliance for Open Media (AOMedia). Second, over the past two years, encoding times for the AOMedia AV1 …

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Encoding VVC with Fraunhofer’s VVenC

For this review, I took a first look at encoding VVC (Ver­sa­tile Video Coding). Specifically, I compared Fraunhofer HHI’s implementation of the VVC codec (Versatile Video Encoder; VV­enC) against the Alliance for Open Media’s (AO­Media) aom­enc codec and the x.264 and x.265 codecs in FF­mpeg. I found VVenC to be simple to use and much faster than expected. Its output …

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