Support for MP4 Downloader has been discontinued.

I don't have the time anymore to keep up with all the breaking changes that Mozilla is making in add-on development for Firefox, in addition to reacting to changes in YouTube, Dailymotion, and Vimeo that affect video downloading. Since Mozilla dropped support for traditional add-ons in November 2017, MP4 Downloader has stopped working entirely in new versions of Firefox.

The codebase has been left in the middle of a complete rewrite (see the Source Code section of the Development page), although this rewrite is not anywhere close to what is required to support new versions of Firefox. That codebase, and this website, are left here for archival purposes.

To all MP4 Downloader fans, thanks for many years of support.

--Jake Hartz

Screenshots

Click on an image to view a larger, more detailed version.

Toolbar button

Toolbar button

Preferences (General)

Preferences (General)

Preferences (Download Location)

Preferences (Download Location)

Preferences (Default Filename)

Preferences (Default Filename)

Download button inside YouTube video page

Download button inside YouTube video page

Download button inside Dailymotion video page

Download button inside Dailymotion video page

Download button inside Vimeo video page

Download button inside Vimeo video page

Context menu of video page

Context menu of video page

Context menu of link to video

Context menu of link to video

Download button below embedded YouTube video

Download button below embedded YouTube video

Download button below embedded Dailymotion video

Download button below embedded Dailymotion video

Creative Commons License
All screenshots are licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.