Sony Pictures Entertainment is delaying the launch of its first titles on the new Blu-ray Disc high-definition video format for a month.

The company had originally planned to ship eight movie titles on May 23 and seven more on June 13. Now the initial eight titles will ship on June 20 while a new launch date for the latter seven has not been decided, said Sony Pictures Entertainment.

The delay is unlikely to inconvenience consumers as the first Blu-ray Disc player isn't expected to be available until five days later on June 25.

Samsung had originally planned to launch a player on May 23 and Sony's original launch date was chosen to coincide. However, a month ago Samsung said it was delaying the sale of its player. At the time Sony said it wouldn't hold up its Blu-ray Disc launch, but on Thursday said retailers had requested a delay to match Samsung's launch date.

The first eight Sony titles will be: 50 First Dates, The Fifth Element, Hitch, House of Flying Daggers, A Knight's Tale, The Last Waltz, Resident Evil Apocalypse and XXX. A ninth movie, Underworld: Evolution, that had been scheduled to debut on June 3 will also launch on June 20. The latter seven titles are: Kung Fu Hustle, Legends of the Fall, Robocop, Stealth, Species, Swat and Terminator.

Lionsgate Films is also planning to launch Blu-ray Disc titles on June 20.

Blu-ray Disc is one of two new optical disc formats vying to replace current DVDs for high-definition content such as movies. Players and discs for the rival HD-DVD format went on sale in Japan in March and in the US in April.