'Potter' is the fastest-selling DVD of '09

LONDON, Dec. 10 (UPI) -- More than 840,000 copies of "Harry Potter and the Half-Blood Prince" were sold its first day on DVD, making the British flick the year's fastest-selling video.

The BBC quoted Warner Home Video's John Stanley Thursday as saying he is "delighted by the extraordinary first day sales performance" of the DVD edition of the sixth installment in the Harry Potter franchise.

The fastest-selling DVD of 2008 was the ABBA movie musical "Mamma Mia!" which moved 1,669,084 copies its first day in stores, the British broadcaster said.