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Here you can download any video even Dr. Brian Cox quantum physics lecture from Youtube, VK.com, Facebook, Instagram, and many other sites for free.
The video is converted to various formats on the fly: mp3, mp4, f4v, 3gp, webm.
Mp3 files are available in 2 bitrates - 320kb or 192kb (if you need a small file size).

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1. Paste a link to the page with the video.
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