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Windows Media Center: Black screen for several minutes when changing channels in Live TV

Symptoms

Consider the following scenario:

You are using Windows Media Center in Windows 7 to watch Live TV.

You change to certain TV channels, and you see blank video and audio. If you stay tuned to the channel for several minutes, the video and audio eventually starts playing.

Alternately, if you close and restart Windows Media Center, and restart Live TV, the video starts playing.


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Cause

This behavior may occur when the TV broadcast has a larger-than-expected timing difference between the audio and video signal.

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Resolution

To work around this problem, set the following registry entry to a larger value:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Service\Video\Tuners\DVR
REG_DWORD: TimeholeThresholdMs

This value configures the largest allowable time difference between the audio and video streams, in milliseconds.

The default value is 2500. In some regions, certain broadcasts have been observed which contain a larger time difference. Changing this value to 3000 may resolve the problem.

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Keywords: kb

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Article Info
Article ID : 2430365
Revision : 1
Created on : 1/7/2017
Published on : 10/4/2010
Exists online : False
Views : 153