Popular movies like The Matrix, The Lord of the Rings trilogy, and Star Wars are likely to get 3D makeovers following the massive success of Avatar.

Experts now predict that 3-D will become the new multiplex standard within five years. This will be as dramatic a shift as when the “talkies” killed off silent movies in the early 20th century.

Retro-fitting a screen classic with 3-D imagery could take as little as four months, using software to manipulate a digital copy of the film.

Peter Jackson, director of The Lord of the Rings, said last spring that he wanted to reissue the trilogy in 3-D if Avatar persuaded enough cinemas to put in new 3-D projectors. Last week technicians at Weta, the production company that had worked on the trilogy, said they had experimented with 3-D battle scenes and proclaimed them to be “gob-smacking”.

The Lord of the Rings is expected to be re-released after Jackson has finished producing the two-part version of JRR Tolkien's The Hobbit over the next two years. This would mean that a 3-D version of The Fellowship of the Ring, the first part of the trilogy, could be in cinemas by Christmas 2012. It may be beaten to the screen by a revamped version of Star Wars. George Lucas, the director, spent $13m filming the original in 1976, added special effects in 1997 and 2004, and will now spend another $10m to change it into a 3-D spectacular.