Is DVD playback showing subtitles flickering in Windows Media Player on Windows 7 computer? This is a known issue and Microsoft has released hotfix download to resolve this issue. Specifically, the video image flickers every time a new line of subtitle is displayed in Windows Media Player 12.
This happens because of an issue in the way that the Enhanced Video Renderer (EVR) handles subtitle notifications. Download Hotfix to resolve this issue, only applicable to PCs with Windows 7 or Windows Server 2008 R2 operating system. This should fix video flicker issue in WMP 12 on Windows 7 system.