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
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).
Taking daily averages, stutter decreased 6-10% for the BBR group. Bandwidth increased by 10-15% for the slower download cohorts, and by 5-7% for the median. There was no difference in latency between groups.
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.
To support our analysis, we created a fingerprint database comprised of 42,027 Netflix videos. Given this collection of fingerprints, we show that our system can differentiate between videos with greater than 99.99% accuracy. Moreover, when tested against 200 random 20-minute video streams, our system identified 99.5% of the videos with the majority of the identifications occurring less than two and a half minutes into the video stream.
EventStreams is built on the w3c standard Server Sent Events (SSE). SSE is simply a streaming HTTP connection with event data in a particular text format. Client libraries, usually called EventSource, assist with building responsive tools, but because SSE is really just HTTP, you can use any HTTP client (even curl!) to consume it.
引用新聞的報導說明，因為 Chromecast 與 Apple TV 不相容於 Amazon 自家的 Prime Video，所以下令所有的店家停售：
The Seattle-based Web retailer sent an e-mail to its marketplace sellers that it will stop selling the Apple TV and Google’s Chromecast since those devices don’t "interact well" with Prime Video. No new listings for the products will be allowed and posting of existing inventory will be removed Oct. 29, Amazon said. Prime Video doesn’t run easily on its rival’s hardware.