Why sound is missing while the image is normal in QuickTime

The Core of The Problem

Some videos can be played with QuickTime and the image is good, while the audio track is missing. It probably results from the missing codec for audio encoding. You can download a codec to encode your audio. If you don’t know much about codec, you’d better not adopt this solution because it can be very troublesome and it might drive you crazy! Kind of exaggerated, but it can be true. Plus, a codec only works for one specific encoding so it’s not worth the money if you just have several files for encoding. A video converter can solve this problem, and you can refer to the third part of this article for more info.

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

Click the "Add Files" button to add video files to the program. This QuickTime video converter for Mac supports drag and dropping. It also supports batch conversion, so you can import and convert several multimedia files at a time.

Step 3, Select output format

Use the “format” on the bottom of the window to control the output format. Click on the toggle to the right of the "Format" label to expand the panel. Select "MOV - QuickTime (.mov)" as the output format.

Step 4, Change QuickTime Video and audio Settings

Click on the “Setting” button to expand “Setting” panel.

You can change the Resolution, Encoder, Bit rate and Frame rate of the QuickTime video and Sample Rate, Channels, Encoder and Bit Rate of the QuickTime Audio. The size of the QuickTime file depends a lot on these settings.

Step 5, Select output directory

Expand the "Output" panel. Use the "Browse" button to select an output directory.

Step 6, Click “Convert” to convert Video to QuickTime files on Mac.