
Still scratching your head over how those crafty "Idol" producers had
Elvis Presley and
Celine Dion singing onstage together? No, it wasn't a hologram. According to various sources, including
The Los Angeles Times,
Good Morning America and
Wild Bluff Media, here's how it was done:
A Photoshop-like technology called Rotorscope was used to merge Presley's performance of W. Earl Brown's "If I Can Dream," which came from his 1968 TV comeback, with recently taped shots featuring 39-year-old Dion, so that it appeared as if it were taking place at the same time as the rest of Wednesday's show.
Dion spent hours onstage singing her part of the song several times without an audience or anyone next to her, looking to her side on cue. Then she did the routine again with a Presley body double who lip-synced Presley's song and matched his moves from his 1968 performance.
Finally, all three elements -- Dion by herself, Dion with the body double and the original Presley performance -- were combined through editing and rotoscoping, which traced Presley from the original footage by cutting him out.
The whole bit was assembled on videotape, so that no one in either audience saw Dion, much less had an Elvis sighting, at CBS-TV studios or at Walt Disney Concert Hall, where most of the evening's live music took place.
"Rotoscoping allows you to take one image from a pre-existing piece of video and puts him in a whole new environment -- completely new use of that same piece of video," Disney digital media designer Joe Husung said.
Elvis is no stranger to this method. He appeared in "Forrest Gump," back in 1994, using similar techniques as well as Pizza Hut commercials, where he hawked the company's newest creation via video editing. Similar technology brought Natalie Cole and her late father, Nat King Cole, together to perform "Unforgettable."
A new British show puts the technology to use every day in "Duet Impossible," in which stars perform with their late idols. If the concept crosses the pond, American audiences may soon see late legends like James Brown and Sinatra rocking the stage again.
An "Idol" spokesman said only that an Elvis impersonator was used "at one point."
Following are videos of both the original 1968 Elvis performance and the coombined Elvis/Celine Dion performance.
Elvis alone:
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