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Video playback may stutter in Windows Media Center when frame rate changes occur

Consider the following scenario:

  • You are watching live or recorded TV in Windows Media Center.
  • The frame rate of the broadcast changes, sometimes frequently.
 In this scenario, you may notice that video playback stutters or "glitches". In some cases, it may make the video almost unwatchable.

This occurs due to Windows Media Center resetting the video pipeline when a frame rate change occurs. Each time a frame rate change occurs, it may take a few frames for the video to recover. However, when frequent frame rate changes occur, video appear to constantly stutter or "glitch" without smoothing out.
There is no known resolution at this time.
This problem occurs when broadcasts frequently switch between interlaced and progressive content. Interlaced content is shown at 59.94 frames per second (fps) while progressive content is shown at 29.97 fps. This problem has also been seen when a broadcaster incorrectly flags their content. For instance, interlaced content is incorrectly flagged as progressive content.

It has been reported by some users that switching to a different video card and/or graphics driver may lessen (or possibly increase) the symptoms noted in this KB article.

glitching jitter hbo
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Article ID: 2658140 - Last Review: 05/02/2012 03:08:00 - Revision: 3.0

Windows Vista Home Premium, Windows Vista Ultimate, Windows 7 Enterprise, Windows 7 Home Premium, Windows 7 Professional, Windows 7 Ultimate

  • KB2658140