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...

Lenovo 開始出 Microsoft-only 機了,其他的 OS 都會被鎖住不能用

有人在 Reddit 上抱怨買了一台 Lenovo 的機器卻不能裝 Linux,因為會抓不到硬碟:「Warning: Microsoft Signature PC program now requires that you can't run Linux. Lenovo's recent Ultrabooks among affected systems.」,官方回覆是:

This system has a Signature Edition of Windows 10 Home installed. It is locked per our agreement with Microsoft.

取自這邊:

喔耶...

溫水煮青蛙:Windows 10 與 Secure Boot

Microsoft 的 Windows 10 更進一步限制了 Secure Boot 的選擇:「Linux’s worst-case scenario: Windows 10 makes Secure Boot mandatory, locks out other operating systems」。

之前是關閉,現在則是必須要 optional (包裝用語啦,意思是預設值打開,使用者可以進 UEFI console 關閉):

OEMs are still required to ship Secure Boot, but the previously mandatory disable switch is now optional

是個「溫水煮青蛙」的概念,如果這次沒擋下來,下一次 Microsoft 就會規定 OEM 出版只能在安裝在強制打開 Secure Boot 的機器上使用 (不能關閉)。

BSD license 的 HDCP 加密、解密程式碼

Slashdot 上看到有人將 HDCP encryption/decryption 的程式寫出來了:「HDCP Encryption/Decryption Code Released」。

程式碼網站在「HDCP Encryption/Decryption Code」這裡,以 BSD license 釋出。為了加速加解密,也用上了 SSE2...

640x480 加密的部份,使用單核心在 Intel Xeon 5140 上可以跑到 181 frames/sec,而在 Core2 Duo P9600 上 (也是只使用單核心) 則可以跑到 76 frames/sec,看起來是 L2 cache 的大勝利... 解密的部份只有 1/7 的速度,但可以使用多核心平行化處理,所以在高階的 CPU 上 1080p 應該有機會跑到 30 frames/sec。