1T-TBC-GL is an ultra compact, high performance Multi-Standard Time Base Corrector designed to correct for time base errors in videotape playback or to correct for instability in most video signals. An integral Digital Processing Amplifier provides all the necessary adjustments to the video parameters. Black with color burst is sent to the output when the input video is not present. Composite and S-Video inputs and outputs are provided. Vertical Interval Lines 17 thru 21 are passed through to insure Closed Captioning, Vertical Interval Test Signals or other information is undisturbed. Genlock feature that enables the incoming video signal to be synchronized to an external video source if desired.