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:
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 filesDrag & 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
Note:Have several video files and want to combine all of them? Just check "Merge into one output file"
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.