Graphics and multimedia policies

The following table lists the policies that apply to the graphics and multimedia settings:

Policy	Function	Default	Use with policy
Target Frame Rate	This specifies the maximum number of frames per second that are sent to the user device from the virtual desktop.	24 fps
Visual Quality	This controls the visual quality of the images that are displayed on the user device.	Medium
Minimum image quality	This specifies the minimum acceptable image quality for Adaptive Display. The lesser the compression used, the higher the quality of the images displayed.	Normal
Moving image compression	This specifies whether or not Adaptive Display is enabled. Adaptive Display automatically adjusts the image quality of videos and transitional slides in slide shows based on the available bandwidth. With Adaptive Display enabled, users should see smooth running presentations with no reduction in the quality.	Enabled
Progressive compression level	This provides a less detailed but faster initial display of images.	Disabled	Progressive compression threshold value Lossy compression level Progressive heavyweight compression
Progressive compression threshold value	This represents the maximum bandwidth, in kilobits per second, for a connection to which progressive compression is applied.	2147483647 kilobits per second
Extra color compression	This enables or disables the use of extra color compression on images delivered over the client connections that are limited in bandwidth, thus improving the responsiveness by reducing the quality of the displayed images.	Disabled
Extra color compression threshold	This represents the maximum bandwidth, in kilobits per second, for a connection below which extra color compression is applied. If the client connection bandwidth drops below the set value, extra color compression, if enabled, is applied.	8192 kilobits per second
Heavyweight compression	This enables or disables the reduction of the bandwidth beyond progressive compression without losing image quality by using a more advanced, but more CPU-intensive, graphical algorithm.	Disabled	Progressive compression level
Lossy compression value	This controls the degree of lossy compression used on images delivered over the client connections that are limited in bandwidth. In such cases, displaying the images without compression can be slow.	Medium	Progressive compression level
Lossy compression threshold value	This represents the maximum bandwidth, in kilobits per second, for a connection to which lossy compression is applied.	2147483647 kilobits per second
Flash default behavior	This controls whether or not Flash content can be rendered in sessions. Enabled indicates that Flash redirection is allowed on the client device. Blocked indicates that Flash redirection is not allowed. Disabled indicates that Flash redirection is rendered on the server.	Enabled	Flash URL compatibility list Enable HDX MediaStream for Flash on the user device
Flash server-side content fetching URL list and Flash URL compatibility list	This specifies the websites whose Flash content can be downloaded to the server and then transferred to the user device for rendering.	Not set	Enable server-side content fetching
Flash background color list	This enables you to set the key colors for the given URLs.	Not set
Flash event logging	This enables or disables the recording of Flash events in the Windows application event log.	Enabled
Flash intelligent fallback	This enables or disables the automatic attempts to employ the server-side rendering for Flash player instances where the client-side rendering is either unnecessary or provides a poor user experience.	Enabled
Display memory limit	This specifies the maximum video buffer size in kilobytes for the session.	32768 kilobytes	Display mode degrade performance
Display mode degrade performance	This specifies the color depth or resolution that the session degrades to when the session display memory limit is reached.	Color depth	Notify user when display mode is degraded
Dynamic Windows preview	This enables or disables the display of seamless windows in flip, flip 3D, taskbar preview, and peek window preview modes.	Enabled
Image caching	This enables or disables the caching of images in sessions. When needed, the images are retrieved in sections to make scrolling smoother.	Enabled
Maximum allowed color depth	This specifies the maximum color depth allowed for a session.	32 bits per pixel	Display mode degrade performance
Notify user when display mode is degraded	This displays a brief explanation to the user when the color depth or resolution is degraded.	Disabled
Queuing and tossing	This discards the queued images that are replaced by another image.	Enabled
Multimedia conferencing	This allows or prevents support for video conferencing applications.	Enabled	Windows media redirection
Windows media redirection	Allowing this setting increases the quality of audio and video rendered from the server to a level that compares with the audio and video played locally on a client device. The server streams multimedia to the client in the original, compressed form and allows the client device to decompress and render the media.	Allowed
Windows media redirection buffer size	This specifies a buffer size from 1 to 10 seconds for multimedia acceleration.	5 secs
Windows media redirection buffer size use	This enables or disables using the buffer size that is specified in the Windows media redirection buffer size setting.	Disabled