Every now and then a beloved piece of software acquires a new feature that sounds good on paper, but really breaks your workflow. This is the case with Firefox’s relatively new found ability to play directly linked MP4 files in the browser without a plugin. Nothing wrong with that, I just prefer to download such files – usually HD movie trailers – using DownThemAll and watch them later using VLC.
So here’s how you revert to the old handling of MP4 files:
- Enter about:config in the address bar
- Hit Enter
- Click I’ll be careful, promise!
- In the Search field, enter
- Double-click the True in the
media.windows-media-foundation.enabledresult to change it to False
- Close the browser tab
That should do it.