Amazon EC2 推出 VT1 Instance

看到 Amazon EC2 推出新機種 vt1,專門為影片壓縮而推出的 family type:「New – Amazon EC2 VT1 Instances for Live Multi-stream Video Transcoding」。

主要是透過 Alveo U30 Data Center Accelerator Card 這張卡加速,號稱比 GPU 機器還要省 30% 的費用 (CPU 的話可以到 60%):

These VT1 instances feature Xilinx® Alveo™ U30 media accelerator transcoding cards with accelerated H.264/AVC and H.265/HEVC codecs and provide up to 30% better price per stream compared to the latest GPU-based EC2 instances and up to 60% better price per stream compared to the latest CPU-based EC2 instances.

看規格支援 H.264H.265,不過看起來沒支援 royalty-free 的 VP9AV1...

另外這跟 AWS Elemental MediaConvert 以及 AWS Elemental Live 好像稍微有點打對台?另外專利的費用不知道怎麼算...

AWS Elemental Link:直接把影音訊號丟到雲端的硬體

AWS 推出了 Live 用的硬體設備 AWS Elemental Link,可以直接將影音訊號轉完後丟到 AWS 自家的 AWS Elemental MediaLive 服務上:「New – AWS Elemental Link – Deliver Live Video to the Cloud for Events & Streams」。

機器很輕 (450g) 也不大 (32 立方英呎,大約 524 立方公分):

界面上吃 Live 領域常用的 SDI (3G-SDI) 或是 HDMI,規格上只能轉 1080p60 (剛好也是 3G-SDI 的上限),然後設備除了透過一般電力供電以外,也可以用 PoE 供電,可以少接一條電源線:

Link takes a single video input as a source and sends a single video output up to 1080p 60fps to AWS Elemental MediaLive. Set up requires three connections to begin streaming video to MediaLive: a power source, an IP network, and a 3G-SDI or an HDMI video source. Link also supports Power over Ethernet (PoE) so you can use as few as two cables.

價位上是賣 USD$995,但對於有 SDI 類的設備價錢不熟。看了一下旁邊棚子 Blackmagic Design 的產品,好像沒看到類似可以直接送到網路服務的產品...

AWS Elemental MediaConvert 支援 AV1

在「2020/03/17 - AWS Elemental MediaConvert - 11 updated api methods」這邊看到的:

AWS Elemental MediaConvert SDK has added support for: AV1 encoding in File Group MP4, DASH and CMAF DASH outputs; PCM/WAV audio output in MPEG2-TS containers; and Opus audio in Webm inputs.

翻了一下同個站台的總表「AWS Elemental MediaConvert」這頁,看起來是第一次支援 AV1 輸出,這對於很在意頻寬的應用方便不少,另外翻了一下 Can I Use 這邊的資料「AV1 video format」,看起來也已經有不少環境可以用 AV1 了 (又看到 Safari,真不愧是 2020 年的 IE6):

另外可以參考「Netflix Now Streaming AV1 on Android」這篇,Netflix 在今年稍早的時候也決定在 Android 平台上採用 AV1。

AWS Elemental MediaConvert 支援 MP3 輸出了

AWS Elemental MediaConvert 宣佈支援 MP3 輸出的格式了:「MP3 Audio Output Now Available with AWS Elemental MediaConvert」。

找了維基百科上的 MP3 資料來看,歐盟是 2012 年就全面過期,而美國是 2017 年:

The basic MP3 decoding and encoding technology is patent-free in the European Union, all patents having expired there by 2012 at the latest. In the United States, the technology became substantially patent-free on 16 April 2017 (see below). MP3 patents expired in the US between 2007 and 2017.

會拖到 2020 年的現在才支援 MP3 不知道是什麼原因。一種可能 AWS 家的法務發現是還有其他地區沒列出來?另外一種可能是,如果考慮到 MediaConvert 的產品特性是以影音為主,所以 AAC 用的比較多,而發展 MP3 相關功能的動力不夠...

AWS 推出了 Live 時全自動上字幕的功能

AWS 推出了在直播時就自動上字幕的功能:「Introducing Live Streaming with Automated Multi-Language Subtitling」,其實就是把現有的服務兜出來:「Live Streaming with Automated Multi-Language Subtitling」。

The solution deploys Live Streaming on AWS which includes AWS Elemental MediaLive, MediaPackage, Amazon CloudFront. The solution also deploys AWS Lambda, Amazon Simple Storage Service, Amazon Transcribe, and Amazon Translate.


AWS Media Services 推出一卡車與影音相關的服務...

AWS 推出了一連串 AWS Elemental MediaOOXX 一連串影音相關的服務:「AWS Media Services – Process, Store, and Monetize Cloud-Based Video」。

但不是所有的服務都是相同的區域... 公告分別在:

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.

引個前同事的 tweet,先不說 Amazon SWF 的情況 (畢竟 Amazon SWF 還可以找到其他用途),倒是 Amazon Elastic Transcoder 很明顯要被淘汰掉了:

這種整個大包的東西是 AWS re:Invent 才有的能量,平常比較少看到...