So that teachers (and we!) can link to specific chapters within CS50’s videos, the links in the Chapters menu now include not only start parameters but also end parameters as well. That way, if you control- or right-click on a chapter and copy its URL, you can link to just a single chapter; the player will start playing the video at start and will automatically pause it at end. Consider, for instance, this link to a chapter on Pseudocode, which starts at 1700 seconds and ends at 1878 seconds!

You can also use the form on the player’s landing page at to create URLs manually!

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