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YouTube is so popular and there are hundreds of thousands interesting videos on it. You may have downloaded some videos from YouTube and want to play them using QuickTime. However, videos downloaded from YouTube are usually come in FLV video format, which is not a friendly format for QuickTime. In order to enjoy YouTube video in QuickTime player, you need to convert to its friendly format like MOV and MP4 first.

In this article, you'll learn how to convert YouTube FLV videos to QuickTime supported videos formats like MP4, MOV, etc. using a professional Mac Video Converter: YouTube to QuickTime Converter for Mac. This program is a great Mac YouTube Video to QuickTime Converter to convert downloaded YouTube FLV videos as well as many other video formats like WMV, AVI, MOV, MP4, MTS, VOB, MPEG, etc. to QuickTime on Mac running Mac OS X Snow Leopard, Lion, Mountain Lion, etc. Just download the free trial and follow below easy steps to convert YouTube video for QuickTime playback.

How to convert YouTube videos to QuickTime supported videos on Mac (Mountain Lion included)

Step 1. Add downloader YouTube videos to the Mac YouTube to QuickTime Converter

Click the + button or easily drag-and-drop the videos you want to convert to the program. As the below picture shows, you can preview the added videos on the right. And all videos will be displayed in thumbnails on the left list pane..

Step 2. Select MOV as output format

Click the double up-arrow at the bottom of this program's pane, and then select MOV as the output format from the pop-up output panel. MOV is highly compatible with QuickTime and this output format is suggested. Of course, you can also choose other QuickTime supported video formats like MP4, 3GP, etc. But because of the video and audio codecs, other video formats may be not accepted by QuickTime.

Step 3, Start to convert YouTube video to a QuickTime-compatible video format on Mac

Hit the Convert button so the YouTube Converter will convert YouTube to QuickTime for Mac OS X (Mountain Lion, Lion supported).

After the conversion, you can play the YouTube videos with QuickTime and just enjoy it!

Note: This Mac Video Converter also function as a free YouTube downloader. It provides you an easy-and-quick way to download videos and movies from YouTube for free.