CS50 2x

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CS50 2x is a Chrome extension that lets you play (some of) Harvard University's videos at 2x speed (and slower and faster). Offers…CS50 2x is a Chrome extension that lets you play (some of) Harvard University's videos at 2x speed (and slower and faster). Offers keyboard shortcuts, custom speeds (between 2x and 3x), and a workaround for DCE videos. CS50 2x also lets you download videos to watch offline with other software.

This extension only supports videos at these domains:

canvas.harvard.edu
cm.dce.harvard.edu
icommons.harvard.edu
isites.harvard.edu
live.cs50.net
matterhorn.dce.harvard.edu

CS50 2x does not support Mediasite videos (since Mediasite's player has its own built-in 2x button).

To activate extension on a page with a video, simply click extension's icon. Or hit Shift-Alt-2 (on PCs) or Shift-Option-2 (on Macs); change at chrome://extensions/ via "Keyboard shortcuts."

To slow down or speed up while a video is playing, click icons or use - and +.

To seek 8s back or 30s forward while a video is playing, click icons or use left arrow and right arrow.

Report any problems to [email protected]!

Written by CS50's own Dan Bradley '14, Cheng Gong '16, and David J. Malan '99.