Download 64-bit Downloaders & Uploaders in Mozilla Extensions (page one)
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Download Vidmaza Video Downloader 1.1 for 64-bit systems
Download videos from youtube.
A firefox add-on to download videos from youtube. It supports to download videos in HD(High Defination), MP4, 3GP, FLV, HQ(High Quality) formats.
On May 24, 2009 updated, download size 1Kb, for Windows 98, 2000, XP, Vista, 64bit.