A new 3D-viewing option on YouTube‘s video player ensures classic movies like The Lion King and Titanic won’t be the only videos getting retroactive 3D treatment. The option allows viewers to watch short-form videos uploaded to YouTube in 1080p while wearing 3D glasses.

YouTube’s enhancement, which rolled out across the site on Thursday, is the latest iteration of a beta feature the site launched last September that gave video uploaders a one-click method for converting their 2D videos to 3D. YouTube said in a blog post that users have since applied the option to “hundreds of thousands” of their videos. Viewers can choose to watch 1080p videos with Red/Cyan, Green/Magenta, Blue/Yellow or interleaved 3D glasses through a new 3D button next to the gear option on the video player. YouTube is, of course, not producing 3D effects on par with video originally filmed in 3D. True 3D video requires two versions of the same scene filmed from two perspectives.

Here’s a simplified explanation of YouTube’s version works: YouTube estimates a depth map for each frame of a video using color, spatial layout, motion and other characteristics. It improves this generated map by applying what it has learned from actual 3D videos uploaded to its platform. The next thing YouTube will figure out is whether its users actually want to watch web video in 3D.