Is this video a file stored in your PC or are you playing this video from a DVD disk? If it is a video file, would you know what format this is?
In the meanwhile, please follow these steps to make adjustments to your RealPlayer.
1. Open RealPlayer.
2. Click the RealPlayer logo, then Preferences.
3. In the Category pane, select Hardware.
- Under Video Card Compatibility, move the slider bar Most reliable.
- Click OK twice to save the changes.
- Close out of RealPlayer, restart it.