Pavtube today announces an official start of 50% Off Discount - ByteCopy for Windows/Mac in the phase of its Christmas promotion for Facebook Website. 50% Discount Coupon! Only 3 Day! Time-Limited! Rush to Buy! Reportedly 5 to 6 times faster as well as multi-track MKV/MP4/MOV output than a boatload of its competitors, this Windows-based program is eating up a bigger market share.  "Accordi...