How to Disable Video Autoplay on Facebook's Website
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Here is a step-by-step guide with pictures showing you how to stop videos from auto-playing on the Facebook website. This is not applicable to the Facebook app, just facebook.com when accessed on a computer.
Click the drop-down arrow in the upper-right corner of any Facebook page and click "Settings":

On the Settings page, click "Videos" on the left column towards the bottom:

On the Video Settings page, click the drop-down option for Auto-Play Videos and change it to "Off".

Step 1
Click the drop-down arrow in the upper-right corner of any Facebook page and click "Settings":

Step 2
On the Settings page, click "Videos" on the left column towards the bottom:

Step 3
On the Video Settings page, click the drop-down option for Auto-Play Videos and change it to "Off".
