This option was renamed in MP 1.1.0 from Refresh Rate to Dynamic Refresh Rate.

Dynamic Refresh Rate - Theory

First you need to understand the theory before you use this option.

A video file contains roughly 24, 25 or 30 frames per second (FPS). Your HTPC has a video card which produces a signal to your TV or monitor. This signal in theory can be anything from 24, 25, 30, 50, 60, 75 or even 100Hz. i.e. 60Hz means the signal is refreshed 60 times a second. If there is a mismatch in the FPS from your media file and the Hz signal to your TV or monitor, this is most likely to be visible as judder in the video. Dynamic Refresh Rate Changer attempts to address this by synchronising the output of the video with the rate of the TV

Options

You may also change this settings in the MediaPortal Interface, see Refresh Rate Settings.

• Enable Dynamic Refresh Rate Control
  Switches Dynamic Refresh ON or OFF
• Use Device Reset
   If the refresh rate changing method provokes a device reset, enable this option.
• Notify (popup) of refresh rate change
  You can specify if you wish to be notified of change of refresh rate
• Force Refresh Rate Change
   Disable detection of current refresh rate and force change to specified rate
• Use default refresh rate
  When playback of a media file is stopped, the refresh rate will go back to original refresh rate before changing.
  Options are all refresh rates defined in the list above.

Note: When you use a Multi Seat setup and use RTSP for LiveTV, the Dynamic Refresh Rate doesn't work! More info about this can be found in the Known Issues Wiki.

Note 2: For Dynamic Refresh Rate to work on actual discs, you have to enable the setting Use MediaInfo for DVDs see DVD Player.

As of MediaPortal 1.3 Final, the default refresh rates have been optimized for Blu-ray playback, NTSC & ATSC.
The default settings are:

TV Modes Tool

A TV modes tool is available to calculate settings for refresh rate changer based on display capabities of the TV you are using. (Thanks to Edterbak)

DOWNLOAD TV MODES TOOL (to calculate refresh rates)

• //forum.team-mediaportal.com/mediaportal-1-talk-45/automatic-refreshrate-changer-44338/index62.html

Further Information

• Troubleshooting > Stuttering Playback