You can convert YouTube to FLAC, YouTube to MP4 online with it. As far as I know, it supports more output formats than Clipconverter. Online Video Converter v3.0 is a free YouTube video converter that converts YouTube videos to other formats.

It is also a good YouTube to mp4 converter free online. Its output formats might include MP4, M4A, FLV, 3GP, WEBM, and MP3. It allows you to download videos from most video websites like YouTube, Facebook, Twitch.Tv, Vimeo, Dailymotion and many more. KeepVid is born as an online YouTube video converter, and now develops an ultimate video & music downloader for Mac and Windows. YouTube to MP3 Converter allows high-speed conversion of files and is compatible with several video websites, including Facebook, Vimeo, VK, Instagram, Soundcloud, Dailymotion, Metacafe, Vevo, and AOL. MP3Converter is one of the best music converters and mp3 search engines which can be used to download and convert YouTube videos to MP3, MP4, WEBM, 3GP, and F4V songs in high quality.

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