After finally obtaining a video file, it's disappointing to discover that the file format is incompatible with your MacBook. This happens especially often with Mac OS devices. While most camcorder movies and Internet videos use the AVI or WMV format, the iPhone, iPad, iPod and Quicktime only support MP4. Fortunately, a number of easy-to-use third-party applications allow you convert various video file formats to MP4.
iSkysoft Video Converter
Navigate to the iSkysoft Video Converter website (see Resources) and click "Download Intel version" or "PowerPC version," depending on your core processor. Save the DMG file to your MacBook desktop, then double-click its icon and copy the app to your applications folder.
Launch Video Converter, click "File" in the menu bar and select "Add Video/Audio files." Navigate to the file you would like to convert and click "OK" to load the file into Video Converter.
Click "Video Formats" and select "MP4." Click "Convert" at the bottom of the window. Video Converter will save the converted MP4 in the same directory as the original video file.
Open the HandBrake download page (see Resources) and click "Download for Mac OS." Save the file to your desktop. Double-click its DMG file icon and copy HandBrake to your MacBook's applications folder.
Launch HandBrake from your applications folder. Click the "Source" button, navigate to the video file you want to convert and click "Open."
Click "Browse" and select the directory for the converted MP4. Type a file name into the text field at the top of the window and click "Save." Select "MP4 file" from the "Format" drop-down menu.
Click the "Start" button. HandBrake will convert the video in an MP4 and save it to the specified folder.
Download and install iSquint to your MacBook (see Resources). Launch iSquint from your applications folder.
Open a Finder window, navigate to the video you would like to convert to an MP4 and drag it into the iSquint window.
Click "Start" to begin the conversion process. When the conversion process finishes, your new MP4 file will save to the same directory as the original file.
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