YT1S downloader 作者： mp3downy

Yt1s is a popular chrome extension to download youtube videos. Click here to add this extension to the chrome browser. YT1s is the fastest online Youtube video to MP3 & MP4 downloader without any dedicated software installed on your device. You can use it both on desktop and mobile with a speedy download rate. Its been making its efforts to make it available several other features like MP3 & MP4 converter, MP4 downloader, and video editor. It's now supporting converting MP4, 3GP, WebM, HD Videos, and M4A into MP3 & MP4 format with quality rates of 320 kbps and 128 kbps.