A few days ago, was mentioning how to lower YouTube videos with Firefox, but today I was with a page that allows to unload any video from more than 40 places, between them YouTube. The service is free, and it is updated, since a few days ago, the places of multimedia content modified his scripts to prevent the videos discharge. So simple as to enter the page, to select the page where the video is, to copy the link, and to unload the video (he keeps in format FVL). Tan simple como entrar a la página, seleccionar la página donde está el video, copiar el link, y descargar el video (se guarda en formato FVL).