Product Documentation

H.265 video encoding

Citrix Receiver for Windows supports the use of the H.265 video codec for hardware acceleration of remote graphics and videos. To benefit from this feature, it must be supported and enabled on both the VDA and Citrix Receiver for Windows. If the GPU on the endpoint does not support H.265 decoding using the DXVA interface, the H265 Decoding for graphics policy settings is ignored and the session falls back to using the H.264 video codec.

Prerequisites

  1. VDA 7.16 and later.
  2. Enable the Optimize for 3D graphics workload policy on the VDA.
  3. Enable the Use hardware encoding for video codec policy on the VDA.

Note: H.265 encoding is supported only on the NVIDIA GPU.

In Citrix Receiver for Windows, this feature is set to Disabled by default.

Configuring Citrix Receiver for Windows to use H.265 video encoding using Citrix Group Policy Object (GPO) administrative template

  1. Open the Citrix Receiver Group Policy Object administrative template by running gpedit.msc.
  2. Under the Computer Configuration node, go to Administrative Templates > Citrix Receiver > User Experience.
  3. Select the H265 Decoding for graphics policy.
  4. Select Enabled.
  5. Click Apply and OK.

Configuring Citrix Receiver for Windows to use H.265 video encoding using Registry editor

Enabling H.265 video encoding on a non-domain joined network on a 32-bit operating system:

  1. Launch the Registry Editor using regedit on the Run command.
  2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Citrix\ICA Client\Graphics Engine.
  3. Create a new DWORD key by name EnableH265 and set the value of the key to 1.

Enabling H.265 video encoding on a non-domain joined network on a 64-bit operating system 64-bit:

  1. Launch the Registry Editor using regedit on the Run command.
  2. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Policies\Citrix\ICA Client\Graphics Engine.
  3. Create a new DWORD key by name EnableH265 and set the value of the key to 1.

Restart the session for the changes to take effect.

Note

  • If the Hardware acceleration for Graphics policy is disabled in the Citrix Receiver Group Policy Object administrative template, the H265 Decoding for graphics policy settings is ignored and the feature does not work.
  • Run the HDX Monitor 3.x tool to identify if H.265 video encoder is enabled within the sessions. For more information about HDX Monitor 3.x tool, see the Knowledge Center article CTX135817.