Article ID : S500031423 / Last Modified : 11/04/2018

Why does the brightness of the televsion screen fluctuate during the playback of a DVD video?

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The brightness of the televsion screen fluctuates during the playback of a DVD video.

Check to ensure that the video output signal is connected directly to the video input of the television set. Do Not connect any devices, such as a video cassette recorder or an audio video ampilfier inbetween the computer and the television set.
In most DVD videos, the generated video output signal contains video guard signal (a signal to prevent any unauthorised copy), that some devices are unable to decode these signal. Hence, the video images are distorted.