Currently, the source code in the JDK is in an ill-defined encoding. There is no official declaration of the encoding used. It is "mostly ASCII", but the relatively few non-ASCII characters used are not well-defined. In many cases, it is latin-1, but I am pretty certain other encodings are used for e.g. Asian translations.
At any given point on the y-axis, SVT-AV1 can maximize encoding speed compared with any other production encoder. For example, the M8 preset is about as efficient as libvp9 preset 0, but M8 is almost 10 times faster.
Two major open source software decoders are compatible with multiple platforms: dav1d was developed by VideoLAN and the open source community and can serve as an app-level decoder, while Google’s libgav1 is integrated into the Android SDK.
[W]e decided to integrate dav1d into the player for both iOS and Android platforms.
We show how we can encode and decode base64 data at nearly the speed of a memory copy (memcpy) on recent Intel processors, as long as the data does not fit in the first-level (L1) cache. We use the SIMD (Single Instruction Multiple Data) instruction set AVX-512 available on commodity processors. Our implementation generates several times fewer instructions than previous SIMD-accelerated base64 codecs.
In this article, we will show that the FPGA-based real-time VP9 encoding can deliver at least 25% bitrate savings compared to the highest-quality H.264 encoders deployed in Twitch’s production today.
然後提到 1080p60 至少省了 25% 的頻寬 (這邊應該是相較於 H.264)：
VP9’s Compression Efficiency for Live 1080p60 Encoding: We Can Achieve At Least 25% Bitrate Savings
查了一下，在桌機上的瀏覽器都差不多支援了：
VP9 is implemented in these web browsers:
Chromium and Google Chrome (usable by default since version 29 from May and August 2013, respectively),
Opera (since version 15 from July 2013),
Mozilla Firefox (since version 28 from March 2014),
Microsoft Edge (as of summer 2016).
Starting from Chrome 72, the following request headers are not provided and cannot be modified or removed without specifying 'extraHeaders' in opt_extraInfoSpec:
Accept-Language
Accept-Encoding
Referer
Cookie
Starting from Chrome 72, the Set-Cookie response header is not provided and cannot be modified or removed without specifying 'extraHeaders' in opt_extraInfoSpec.
You can now enable content encoding support for API Responses in Amazon API Gateway. Content encoding allows API clients to request content to be compressed before being sent back in the response to an API request. This reduces the amount of data that is sent from API Gateway to API clients and decreases the time it takes to transfer the data. You can enable content encoding in the API definition. You can also set the minimum response size that triggers compression. By default, APIs do not have content encoding support enabled.
Introducing AWS Elemental MediaConvert (US East (Virginia), US West (Oregon), US West (Northern California), Asia Pacific (Singapore), Asia Pacific (Sydney), Asia Pacific (Tokyo), EU (Frankfurt), and EU (Ireland))
不過這邊還是引用 Jeff Barr 文章裡的說明，可以看到從很源頭的 transencoding 到 DRM，以及 Live 格式，到後續的檔案儲存及後製 (像是上廣告) 都有：
AWS Elemental MediaConvert – File-based transcoding for OTT, broadcast, or archiving, with support for a long list of formats and codecs. Features include multi-channel audio, graphic overlays, closed captioning, and several DRM options.
AWS Elemental MediaLive – Live encoding to deliver video streams in real time to both televisions and multiscreen devices. Allows you to deploy highly reliable live channels in minutes, with full control over encoding parameters. It supports ad insertion, multi-channel audio, graphic overlays, and closed captioning.
AWS Elemental MediaPackage – Video origination and just-in-time packaging. Starting from a single input, produces output for multiple devices representing a long list of current and legacy formats. Supports multiple monetization models, time-shifted live streaming, ad insertion, DRM, and blackout management.
AWS Elemental MediaStore – Media-optimized storage that enables high performance and low latency applications such as live streaming, while taking advantage of the scale and durability of Amazon Simple Storage Service (S3).
AWS Elemental MediaTailor – Monetization service that supports ad serving and server-side ad insertion, a broad range of devices, transcoding, and accurate reporting of server-side and client-side ad insertion.
