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.
Haz clic aquí para descargar versión 1.3.3 (la última versión estable).
MP4 Downloader está disponible de Mozilla Complementos.
Esta es la rama más antigua para versiones de Firefox más viejas. Esta rama todavía se mantiene con algunas actualizaciones, pero no se añadirán nuevas características. Para descargar la última versión de esta rama (versión 1.2.15), haz clic aquí.
Para ver el registro de cambios de MP4 Downloader, haz clic aquí.
Si te interesa probar una versión beta de MP4 Downloader, consulta la página de desarrollo.