Many users who edit video have a problem when Sony Vegas Pro does not open MP4. The situation is quite common, but most inexperienced users are at a standstill, forcing themselves to abandon this program for the sake of another, similar. But you do not need to do this - the problem is quite simple to fix so that in the future it will no longer appear.
Method 1: Download Codecs
The most common cause of an error is the lack of the right codecs. All of them are in one package, which is called the K-Lite Codec Pack. To fix the problem, you need to download it from the official site and install it on your computer.
If the error persists after the procedure, try installing the latest version of the Quick Time media player.
Method 2: work with libraries
If the previous method did not give any results, then perhaps the problem is the lack of the appropriate dynamic library required to open MP4 files in Sony Vegas Pro. In this case, you must add it. This is done as follows:
- Locate the aviplug.dll dynamic library on the Internet and download it to your computer. Use only trusted sites!
- Extract from the archive to any folder.
- Copy the file to the "System32" directory, which is located on the system drive in the "Windows" folder.
After that, it is recommended to restart the computer, and then open MP4 in the program.
Method 3: remove codecs
It is possible that the Sony Vegas program does not open MP4 due to the incompatibility of some codecs. As you can understand, this situation is diametrically opposite to that given in the first method. Accordingly, to solve the problem, you need to remove the codecs from the computer.
If after that nothing works, then try to install them one at a time, each time checking the operation.
Method 4: convert video to another format
If you tried all the methods, but you still can’t add the file of the MP4 format to the program, then the best way to completely launch the desired file is to convert the video. At the same time, it is not recommended to convert the file to AVI format, since most often they do not start in the same way with MP4 in Sony Vegas Pro. You can use a simple program called Format Factory to complete this operation.
Conclusion
So we figured out how to fix the problem when Sony Vegas does not open MP4. We hope that one of the four methods listed here will help you resolve the issue.