The capture mode 'Polling' was not initially available when we released R11.2 version of the product.
This mode was added later with the Cumulative patch 3 as an alternative to the normal video capture mode. and is available in all future releases.
See DSM Policy \DSM\Remote Control\Host\Video Capture
Video capture mode
Indicates the video capture mode for capturing screen changes.
There are two methods of capturing screen changes, Driver capture and Polling capture.
Typically, the Driver capture mode provides better performance than the Polling capture mode. However, there are some types of application that cannot be captured by the Driver capture method. Typically these are OpenGL or Direct3D based applications, such as computer aided design applications.
The polling capture mode is capable of capturing screen changes from OpenGL & Direct3D applications.
There are three video capture mode settings for the Remote Control host:
In this mode, Driver capture is used if it is available. If the video driver cannot be installed for some reason, or the machine resources are too limited to load the driver, Polling capture is used as a fallback.
Driver capture is used exclusively. There is no fallback to Polling mode if the Driver mode is unavailable.
Polling mode is used exclusively.