Why the image disappears but you can hear the sound?

The Core of The Problem

This situation is similar to problem "Sound is missing while the image is normal". The codec for encoding the video is missing. The solution is quite similar to the forward situation. Use a video converter to convert your video file to QuickTime format.

Convert Video to QuickTime Format on Mac OS X

Step 1, Download and install QuickTime video converter

You can download it for free here:

• Intel Version
• Power PC Version

To install it, simply mount the .dmg archive by double-clicking it, and copy the application to your applications folder (or wherever you want).

Step 2, Load video files

Drag & drop video files to the program. Or go to "File" menu, choose "Add Video/Audio files" to locate the files you want to add. This QuickTime video converter for Mac supports batch conversion, so you can import and convert several multimedia files at a time.

Step 3, Select output format

Step 4, Start video to Quicktime Conversion on Mac OS X

When you finish the output setting, just click the "Convert" button to convert Video to QuickTime files on Mac.The conversion speed is pretty fast! That's it! Enjoy!

This video converter is specifically designed for Mac OS users, including Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard on iMac, Mac Pro, MacBook, MacBook Pro, MacBook Air, etc.