Writing in a blog post, YouTube said users can click "Edit Info" on a video's page and select "3-D Video" to convert a two-dimension clip into 3-D, the Los Angeles Times reported Wednesday.
However, users will still need 3-D glasses to view the clips on most devices.
YouTube said it creates the 3-D video by measuring color and motion and combining two sets of images, the original and one it creates, to mimic the way a human eye perceives depth in the real world.
Engineers at YouTube owner Google said they had noted a steep rise in uploads from a new crop of 3-D-capable cellphones and camcorders.
The 3-D output can be viewed on a variety of devices including PCs, televisions and cellphone screens with differing and sometimes incompatible technologies.
"We wanted to make the barriers evaporate," Jonathan Huang, YouTube's product manager for 3-D, told The New York Times.
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