The file extension “.mp4,” short for MPEG-4, signifies a compressed video file. Mac users can enjoy a steady work flow between QuickTime Player and iTunes, converting audio and video files to many formats, including .mp3’s. MP4 files are one of the few video types supported by iTunes; however, you must convert your MP4 video in QuickTime to export the audio, and then convert the audio track to an .mp3 in iTunes. Click “Import Settings” in the lower right side of the window. Click the icon bar “Import Using” and select “MP3 Encoder.” Click “OK” twice to exit back to the iTunes Library. Warnings Writer Bio
