A New Option to Protect Your Workspace: In-session Watermark

Citrix employee blogs - Mon, 12/04/2017 - 22:00
We enforce security from the enterprise boundaries to every individual end point device. We design layered secure zones to prevent information leakage. We are armed to the teeth, protecting every bit of our information. But is that enough?

Even a …

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Categories: Citrix, Virtualisation

XenApp Essentials: Part 2

Citrix employee blogs - Mon, 12/04/2017 - 19:00
“XenApp Essentials, The Revenge: Return of the Kireeti.”

It’s not all that uncommon that a sequel turns out better than the original. For example, “The God Father II”, “Star Wars: Episode V – The Empire Strikes Back

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Introducing New OData API for XenApp & XenDesktop’s Monitor Service

Citrix employee blogs - Mon, 12/04/2017 - 17:31

Ever wondered how to get answers for queries like…

How many Users are active in each location?

How many users are experiencing slow logins to their XenApp applications?

If you answered “yes,” Citrix has some good news for you!

With …

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Pass the Bitcoins and Gravy, Please

Citrix employee blogs - Mon, 12/04/2017 - 15:00

Last week, at Thanksgiving dinners across the US, there were heated debates – about politics, the economy, and my favorite topic – Bitcoin! Is it a pyramid scheme? Is it a Ponzi? Is it a Bubble? Well – I don’t …

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Browser Video: Codecs, Formats & Hardware Acceleration

Helge Klein - Mon, 12/04/2017 - 14:13

Web video is ubiquitous. We take it for granted that browsers play video in high resolution, over any connection, on any device. Behind the scenes, a complex machinery of video formats, codecs, and GPU acceleration techniques is at work to make it all happen. This post explains what is what.

Video Container Formats

Video containers store audio and video tracks, which may be encoded in a variety of codecs. Two video container formats are being used on the web today: MP4 and WebM.


MP4 contains audio encoded in AAC or MP3 and video encoded in H.264 (AVC) or H.265 (HEVC). The MP4 format is not royalty-free.

MP4 containers with H.264 video are supported in basically any browser:

MP4 containers with H.265 video (HEVC), on the other hand, are only supported in Edge and Internet Explorer, and only on devices that can decode H.265 in hardware. The reason is simple: Edge and IE do not decode H.265 by themselves, so Microsoft does not have to pay licensing fees. Edge/IE pass the video stream for decoding to the OS which in turn sends it to the GPU. Licensing costs are paid by the GPU vendor.


WebM contains audio encoded in Ogg Vorbis and video encoded in VP8 or VP9. The WebM format is royalty-free.

WebM containers are supported in Chrome and newer versions of Edge and Firefox only. Internet Explorer does not support WebM.

Hardware-Accelerated Video Decoding

GPUs have dedicated units that are much more efficient at decoding video than general-purpose CPUs which lack similar capabilities. However, for hardware decoding to work, all the components involved need to work hand-in-hand:

  • The GPU’s decoder needs to support the video properties (codec, 4K resolution, HDR)
  • The graphics driver needs to make the GPU’s capabilities available to the OS
  • The operating system needs an abstraction layer so that applications do not have to deal with individual vendor driver APIs
  • The application (the browser) needs to make use of the OS’ decoding API
DirectX Video Acceleration API 2.0

The Windows API of choice for accessing the machine’s hardware video decoding units is called DirectX Video Acceleration 2.0. DXVA is a little-known API; not many tools exist for exploring it. One of the few is DXVA Checker. It shows the video capabilities reported by the graphics drivers.

The screenshot below depicts the capabilities of the integrated Intel HD Graphics 620, built into the Kaby Lake i7-7500 CPU. Video decoding is supported for H.264, H.265 (HEVC) and VP9 (all at least up to 4K).

H.264 Hardware Acceleration

Hardware-accelerated decoding of H.264 (AVC) video is available on all CPUs/GPUs sold in the past 4+ years. 4K resolution, however, is only supported by newer hardware sold in the past 2+ years, approximately.

H.265 Hardware Acceleration

Hardware-accelerated decoding of H.265 (HEVC) video is available only on newer CPUs/GPUs. More specifically, at least the following are required:

  • Intel Skylake
  • Nvidia Maxwell (later models) or Pascal
  • AMD Fiji or Polaris
VP9 Hardware Acceleration

Hardware-accelerated decoding of VP9 video is available only on the newest generations of CPUs/GPUs. At least:

  • Intel Kaby Lake
  • Nvidia Maxwell (later models) or Pascal
  • AMD Polaris
Checking the Browser’s Acceleration Status

Chrome reveals which video codecs are hardware-accelerated on the current platform at the special URL chrome://gpu.

The screenshot above was taken on a device with the Intel Kaby Lake CPU i7-7500U. Hardware decode support for VP9 is available (shown as VPx).

Firefox provides some information at about:support, but does not show which codecs are accelerated. There is no known way to determine the acceleration status for Edge or IE.

Codecs Used by Video Sites

Almost all video websites use the H.264 codec, and for a very simple reason: H.264 ist most broadly supported in browsers and on mobile devices.

There is just one exception: YouTube, when accessed from Chrome or Firefox, serves VP9 encoded video.

That brings us to an important caveat: YouTube videos in Chrome or Firefox are inefficiently decoded in software unless the playback device is equipped with one of the newer GPU models.

The post Browser Video: Codecs, Formats & Hardware Acceleration appeared first on Helge Klein.

ICYMI: Recapping a Quarter of Citrix Cloud Enhancements

Citrix employee blogs - Mon, 12/04/2017 - 13:00

Although we typically write blog posts about major enhancements to our products and solutions, it’s easy to forget about the smaller changes we make on an ongoing basis to improve our products and to make them more user-friendly. This post …

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XenApp and XenDesktop における Azure Role Based Access Control の利用

Citrix employee blogs - Sun, 12/03/2017 - 23:00

このブログは、2016年11月に Citrix 米国本社マイクロソフトソリューションエンジニアリング部門 Ole Larsen が執筆したブログ「Azure Role Based Access Control in XenApp and XenDesktop」を日本語訳し、一部修正/加筆したものです。

Azure Role Based Access Control in XenApp & XenDesktop


XenApp および XenDesktop の Azure Resource Manager のサポートにより、Azure クラウドの仮想マシンのカタログを作成および管理できます。このブログ記事では、Azure サービスプリンシパルへロール権限やスコープを定義する方法、およびカスタムロールを定義したサービスプリンシパルを利用して XenAppおよびXenDesktop からAzure への接続を許可する方法について用例を交えながらお伝えしていきます。


Azure サービスプリンシパル

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Citrix Director 7.16 Can Now Shadow Linux App & Desktop

Citrix employee blogs - Fri, 12/01/2017 - 21:00
Citrix Director is the go-to console for all XenDesktop & XenApp administrators to troubleshoot issues in real time. One of the primary troubleshooting requirements is to help users who are facing issues while using a HDX session (both applications and …   Related Stories
Categories: Citrix, Virtualisation

Citrix Director Supports Domain local groups in XenApp & XenDesktop 7.16!

Citrix employee blogs - Fri, 12/01/2017 - 19:00
Finally, the much awaited support of Citrix Director for multi-forest infrastructures with a one way trust that uses domain local groups to hold users and user-groups is out. This facilitates CSP administrators to troubleshoot users belonging to a tenant forest …   Related Stories
Categories: Citrix, Virtualisation

Citrix Service Provider Partner Enablement

Citrix employee blogs - Fri, 12/01/2017 - 17:00

Back in January, we introduced a series of enablement webinars for CSPs, including Distributor Enablement, Partner Business Track, and Partner Technical Track Webinars. We’ve achieved record-breaking attendance, but continue to receive feedback requesting more on-demand trainings for …

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The Anatomy of Citrix Receiver for Windows 4.10

Citrix employee blogs - Fri, 12/01/2017 - 14:30

The new Receiver for Windows v4.10 houses a lot of new features. Improved DPI support, support for .H265 video encoder mode, improved protocol driver error messages, improvements to advanced preferences, enhanced adaptive transport, improved self-service plugin performance, support for workspace …

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Scripting Citrix XenServer with PowerShell and Command Line

Citrix employee blogs - Fri, 12/01/2017 - 11:00
In this blog post, it’s my aim to show you the most popular commands for Citrix XenServer in PowerShell and Command line, so you can use them in your automation workflow.

Because, as always, AUTOMATE EVERYTHING! Citrix XenServer is Linux-based, …

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3 New Ways XenApp & XenDesktop 7.15 LTSR Enhances Security

Citrix employee blogs - Thu, 11/30/2017 - 23:00

Now that the latest XenApp and XenDesktop LTSR builds have been out in the wild for a while, I’ve been getting a lot of questions about whether customers should upgrade their platform to the 7.15 LTSR release and what features …

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Updates to the Library in the Citrix Cloud Management Plane

Citrix employee blogs - Thu, 11/30/2017 - 21:00
The Library is the go-to place for viewing and managing offerings from Citrix Cloud services; it has recently been updated to allow for a better experience for IT admins. Admins can now get more information when viewing offerings or doing …   Related Stories
Categories: Citrix, Virtualisation

What’s New with the Citrix SCOM Management Packs – Nov 2017

Citrix employee blogs - Thu, 11/30/2017 - 19:00

The latest Citrix SCOM Management Packs released with XenApp and XenDesktop Version 7.16 release, as always, supports the latest XenApp and XenDesktop, StoreFront, and Provisioning Services versions. This release also supports NetScaler Version 12.0 and ShareFile Version 5.0/5.1.

The noticeable …

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Announcing Workspace Customization for XenApp Essentials Administrators

Citrix employee blogs - Thu, 11/30/2017 - 17:00
Citrix is excited to announce that all XenApp Essentials administrators can now customize the appearance of their workspaces to provide a consistent brand experience for their users.

In this walkthrough, I’ll be showing you a new tab on the Workspace …

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From AI, VR and IoT to Robotics, Tech Has Lots in Store in 2018!

Citrix employee blogs - Thu, 11/30/2017 - 13:00

Each year around this time, we do our best to peer into the future and make predictions about those things that will drive us, fuel innovation, and set the tech world aflame in the coming year. The rapid pace of …

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Your Guide to AWS re:Invent Announcements for 2017

Theresa Miller - Thu, 11/30/2017 - 06:30

AWS re:Invent 2017 is one of the most anticipated conferences of the year, since it usually falls towards the end of November. One thing that we all can count on is a slew of announcements during re:Invent 2017.  Luckily for us, AWS makes it easy to keep track of these re:Invent announcements. Let’s take a […]

The post Your Guide to AWS re:Invent Announcements for 2017 appeared first on 24x7ITConnection.


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