What is an FLV file? A file with the FLV file extension is a Flash Video file. The Flash Video format is a video format defined by Adobe Systems. Flash Video is the standard video format used by nearly all embedded video on the Internet including the videos found on YouTube, Google Video, and many more websites. When do you want to convert FLV to MP4 on Mac? If you want to edit your FLV files downloaded from Youtube and want to play these video files on your iPad, iPhone, iPod, BlackBerry, Android phones and media players, you have to convert FLV to MP4 on Mac, as flv can’t be recognized with iPad, iPhone etc. This tutorial will show you how to convert FLV to MP4 on Mac. The best Mac FLV to MP4 Converter can convert FLV to MP4 video, it also support the conversion on the other video and audio formats including MP4, WMV, MOV, M4V, MPEG, MPG, MKV, MP3, AIFF, WMA, M4A, AC3, AAC, WAV, OGG, etc on Mac OS X. How to convert FLV to MP4 on Mac? 1. Download and install Please download and install this powerful Mac FLV to MP4 Converter, and run it. 2. Add FLV Video files Please click “Add File” button to add video files or drag the video files you want to convert. 3. Select MP4 as the output video format With this FLV to MP4 Converter for Mac, you are able to choose the output format by click “Profile” drop-down box. It enables you to convert FLV to MP4 or convert FLV to MOV, MKV, AVI, M4V and more for playback on iPhone, iPad, iPod, Samsung Galaxy Note/S series, HTC, Nexus, Sony Xperia Z3, MOTO X, LG G3, Galaxy Tab, Kindle Fire and other Android Phones. Besides, you can also extract audio files from any video can convert them to MP3, WMA, FLAC, M4A and so on. 4. Start Converting FLV Files to MP4 on Mac Click “Convert” button and wait for the conversion to be completed.