COM WORLD CMD-850 Digital Video Converter retro technology: Convert PAL to NTSC, NTSC to PAL

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Here's a piece of retro tech from about 15 years ago when television standards was still a thing: A small, budget television formats converter sold by World Gift Center Inc., today World Import. Made in Korea, this nifty device could convert video signals on the fly to any signal as selected on the control panel of the device. But how was the quality?