Works perfectly well on my Firefox 15b5 Rated 5 out of 5 stars

NetVideoHunter has always been my choice for multimedia downloads (it also handles audio). Simple, discreet, efficient. I simply hope the developers will not abandon the project but, as long as it is operational, no need for systematic updates, I guess.

This review is for a previous version of the add-on (1.9.1).  This user has other reviews of this add-on.