You may find not all AVI files can be accepted by iPhone 4, iPad, iTunes etc. That's because Apple only supports such kind of AVI file: PCM stereo audio in AVI file format, so if yours are not this kind of AVI files, you have to convert AVI to M4V on Mac with Wondershare Mac Video Converter - a AVI to M4V Converter for Mac. So that you can enjoy your favorite AVI movies in iPhone 4, iPad anywhere and anytime.
According to your Mac processor, choose Intel version or PowerPC version to download on your Mac. And then follow the guide below to learn how to convert AVI to M4V on Mac.
| * Intel Version | * PowerPC Version |
Step 1: Add AVI files
In order to load AVI files, you just drag AVI files into AVI to M4V Converter for Mac.

Step 2: Set output format
Click "Format" and then choose M4V from "Video Formats" group to customize the output.


Step 3: Start converting AVI to M4V Mac
When the above settings are finished, just click the "Start" button to start the conversion.

After the AVI to M4V conversion, you now can freely use your AVI videos on iPhone 4, iPad, iPod, Apple TV, iTunes etc. Or edit in iMovie for making a movie of your style. Wondershare Video Converter for Mac is a multi-functional conversion software and very easy to use. With the AVI to M4V Converter for Mac, you could also convert AVI to MP4 Mac, and to 3GP, MP4, MOV, MPEG, MP3, WAV, AAC, etc.
| * Intel Version | * PowerPC Version |