Celebrity Home Entertainment (VCR Tracking Bumpers)

Bumper (1985-1991)
Visuals: On a white background, we see the text "FOR THE BEST POSSIBLE PICTURE PLEASE ADJUST THE TRACKING KNOB ON YOUR VIDEO MACHINE", with "THE TRACKING KNOB" blinking on and off.

Technique: The blinking of "THE TRACKING KNOB".

Audio: A man reading the message, which sounds like it was recorded in an auditorium.

Availability: Found on some Celebrity Home Entertainment releases, most notably the Mighty Mouse compilation tape.