IDM should show MP4 format option on its video download panel for that video.

Then press 'Remove Selected' ( arrow 3 on the image) and then 'Save Changes' ( arrow 4 on the image).Īfter this you can open YouTube site in FireFox again and play any video. Then press 'Manage Data' ( arrow 1 on the image) and on a new dialog enter 'youtube' in search bar to find cookies for YouTube and select it in the list ( arrow 2 on the image). Uncheck 'Cookies and Site Data' option to clear only cache ( arrow 1 on the image) and press 'Clear' ( arrow 2 on the image). Select 'Privacy & Security' tab ( arrow 3 on the image) and press 'Clear Data.' button in 'Cookies and Site Date' section. To do this click on FireFox menu ( arrow 1 on the image), select on 'Settings' menu item ( arrow 2 on the image), Then you need to clear cache in FireFox and delete cookies for Get the customisable mobile browser for Android smartphones. You need to close all YouTube web pages in FireFox. Get the not-for-profit-backed browser on Windows, Mac or Linux. Power profiling visualizing performance data recorded from web browsers is now also supported on Linux and Mac with Intel CPUs, in addition to Windows 11 and Apple Silicon.

How to download MP4 video from YouTube in FireFox? New Improved the performance of the instance when Microsoft's IME and Defender retrieve the URL of a focused document in Windows 11 version 22H2. When I try to download video from YouTube in FireFox browser, it shows only MKV video extension.

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