How to add/transfer/convert youtube videos.flv to iTunes on Mac? When you organize movies collection and synch videos to iPod,iPhone and Apple TV with iTunes, you will find that iTunes can't work with youtube videos. something wrong with your iTunes? The reason is that iTunes can only play a limit number of files (video/audio) like MPEG-4 (.mp4),.H.264, MOV and m4v. while youtube videos is flv. The trick here is to convert youtube videos.flv to iTunes accpetable format . Mac flv to iTunes converter has the ability to convert youtube videos.flv to iTunes accpetable format. Without output quality loss, Mac flv to iTunes converter provides you with editing feature to customize your video----trim the length, cut off the unwanted parts and add effect to your videos through tuning brightness,contrast and saturation.Its rich and varied settings allow you to set output video resolution,bitrate to get better quality. Step by step illustration on how to add/transfer/convert youtube videos.flv to iTunes on Mac? Step1.Import youtube videos.flv you want to convert Click the "Add File" button on the top of the panel. Browse the opened window to select youtube videos.Its batch mode supports you import as many youtube videos as you want. Step2.Take Setting Click the "Settings" button. In the pop-up window, set the video Encoder, Resolution,Frame Rate, Bitrate and Audio Encoder,Sample Rate,Channels and Bitrate.If you have no requirement about them, click the "Default" button. Then click the OK. Step3.Apply the effect Click the "Effect" on the top of the panel.Tune the video brightness,contrast and saturation according to your personal flavour.And you can preview the change. Step4. Start the conversion Click the "Convert" button on the bottom right to start the conversion.Progress bar will show you how much have been finished.If finished, a pop-up window will remind you"All conversion tasks have been finished!" Cilck "OK", the output folder will open automatically. Step5. Transfer the converted videos to iTunes Open iTunes and create a new playlist in the "File"menu.Then select all converted videos and drop them into the playlist.