PLEASE BE AWARE THAT DUE TO 4K BEING A PIONEERING VIDEO FORMAT, NOT ALL SYSTEMS WHETHER COMPUTERS, SMART-TV's OR SMARTPHONES ARE ACTUALLY CAPABLE OF PLAYING IT. SOME WILL PLAY THEM KINDA POORLY WHILE OTHERS WILL SURPRISE YOU IN HOW WELL THEY PLAY. BEFORE YOU THINK ABOUT COMPLAINING, PLEASE BE JUST AND UNDERSTAND THAT IT IS YOUR RESPONSIBILITY TO MAKE SURE YOUR SYSTEM SUPPORTS SUCH A HIGH QUALITY FORMAT. WE CAN'T BE BLAMED FOR DELIVERING AN ULTRA HIGH QUALITY PRODUCT. AFTER ALL, PROGRESS IS MADE BY PIONEERS AND NOT BY DAY-DREAMERS. OUR VIDEOS ARE ALL TESTED PRIOR AND POST PUBLISHING AND WE GUARANTEE YOU THEY PLAY PERFECTLY IN A CAPABLE ENOUGH SYSTEM. PLEASE KINDLY DOWNLOAD OUR 4K PROMO VIDEO HERE - 439MB - 01:35 min (Save Link As) AND GIVE IT A TEST. FOR THOSE UNABLE TO PLAY 4K DECENTLY YOU CAN ALWAYS OPT OUT FOR OUR 1080p HD VERSION. THESE DAYS PRACTICALLY EVERY SYSTEM OUT THERE PLAYS HD. HERE IS SUCH A PROMO - 388MB - 01:35 min (Save Link As) MEMBERS AREA WILL HAVE BOTH VERSIONS AVAILABLE FOR YOU TO CHOOSE FROM ;) We recommend VideoLan's VLC Player and Windows Media Player. Our videos have been tested in both programs.