Custom Video Speed for YouTube™ is a Firefox add-on that allows you to change the playback speed of YouTube™ videos with granular control. It provides sliders, buttons, and keyboard shortcuts to adjust the speed incrementally from 0.1x to 8.0x. You can save your preferred speed as the default and program preset speeds for easy access. The add-on also offers customizable keyboard shortcuts for convenient control. Open source on GitHub, it enhances your YouTube™ experience with improved playback speed options.
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7.1.0 BUG FIX UPDATE!
Fixed an issue where a user could not save their options on the preferences page. Also getting ready for manifest v3. This should not affect the users of the extension at all, but manifest v3 is the next version of the WebExtensions API and will be current for Firefox soon.
7.0.0 Update!
The extension will now ignore your key presses if you are typing in a text box! You can finally write comments with punctuation without having it mess with your speed settings. You can turn on the old behavior if you would like in the options page.
6.1.3 Update!
Changed name and description to comply with Google's guidelines
6.1.2 UPDATE!
Changed icon to comply with guidelines
Works for setting default speed and changing speed. It does however break the normal YT speed controls. I would prefer if it integrated with YT's own UI and still allow speed changes from. (I don't need custom speed settings, but if I cared about those, they would be nice to integrate there as well)
Custom Video Speed for YouTube™ requires some sensitive permissions that could impact your browser and data
security. Exercise caution before installing.
Risk likelihood
Custom Video Speed for YouTube™ has earned a fairly good reputation and likely can be trusted.