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Dell Wyse ThinOS Version 8.5 Hotfix Administrator’s Guide

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VOR codec in RDP session

When you are playing video in an RDP session—Windows 8.1, Windows 2012 R2, Windows 10 and Windows 2016—VOR codec is used. The following logs are displayed in the Event Log tab.
Figure 1. Event log tab
Event log tab
NOTE:
  • Dependence 1—RDP GFX status, H.264 and VOR work only when GFX is enabled.
  • Dependence 2—VOR is dynamic. So the enablement / disablement of VOR dynamically changes during the change in the video resolution (enlarge/shrink).
  • Dependence 3—H.264 enablement is decided at the beginning of connection, depending on the maximum resolution available for the session.
  • In Microsoft broker 2016, and Windows 10/2016 sessions, if H.264-AVC444 is enabled, then VOR is not used. If you disable H.264-AVC444, VOR is used.

In RDP session (RDP 8.1 and later), VOR, H.264 and H.264-AVC444 are enabled by default. To disable these parameter, use the following ini parameter: SessionConfig-RDP EnalbeGFX=yes EnableVOR=no EnableRDPh264=no.


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