Step 1. Load AVI files to the program on Mac
Launch the AVI to MP4 for Mac converter program, you will see its main interface as follow. Then change the main option to "Local Video". Also, if it's the first time to run this program, the default highlight option is just the "Local Video" .
Next, Click "+" button to load AVI files to this program, or rather, drag and drop video(s) to the file window directly.

Step 2. Select MP4 as output video format
Select MP4 as output video under the Video Formats, or choose iPhone 4, iPod touch 4 under the Apple Devices as output device format. By the way, the default output format is iPhone 4.

Step 3. Start AVI to MP4 conversion on Mac
Before start to convert AVI to MP4 on Mac free, you can instantly preview your videos in the preview pane. Once you’re satisfied, simply click "Start" to convert AVI to MP4 Mac. During conversion, you can pause or cancel the AVI to MP4 Mac conversions easily. The progress bar will show you the conversion speed.
So exciting AVI to MP4 software, do you heart it? Then free download and enjoy it!

Tips: The AVI to MP4 converter for Mac also allows users to batch or edit videos , such as, set the start time and end time to intercept part video output, realize merging different video format files and output unified video format file, furthermore, you can suspend conversion in the progress of AVI to MP4 conversion at any time.
Read more: Convert AVI to MOV Mac, Free Download AVI to MP4 Converter