An mp4 is a video file type, but the .mp4 in the file name is the file extension. Usually, these things should match, but it's possible for that not to be the case.

To know the file extension or file type, switch the view mode in File Explorer to Details. After switching to the Details view, you will see the file extension of all the files in the Type column ...

Then, click on the Start menu and type cmd, and open Command Prompt. Now, type cd /d and paste the path beside it and press Enter. It will change the cmd directory to that path. Now, type the ...

How to change the format of a file from File Explorer Using File Explorer is a quick way to change the file type (or extension), but it's not an optional option. The best method is to use the ...

Step 1: Right-click on a file of the type you wish to change the association for. Step 2: Select Open With from the resulting menu. Digital Trends Microsoft Windows: Everything you need to know ...

When you double-click on a file in Windows, it will automatically open a default program that is configured to manage these types of files. It is common, though, want or need to use a different ...

To view file associations in Windows 10, open File Explorer and navigate to the folder that contains files of the file type you want to modify. Next, right-click on a file and select Properties ...

Disabling File-Type Warnings Close the program you are using to open the file that gives you the "Always ask before opening this type of file" message, if it's currently running.

When you double-click on a file in Windows XP, the operating system will automatically open the file using a program that has been is associated with the file's extension. It is possible, though ...