You can't play unsupported file extensions in Windows Movie Maker. You have to convert the file to a format compatible with the program.
You don't need to change the file format of an .mp3 to use in Windows Movie Maker since the program accepts the format. These are the Audio formats Windows Movie Maker can import:.aif, .aifc, .aiff, .asf, .au, .mp2, .mp3, .mpa, .snd, .wav, and .wma
That is not a file format. Undf stands for 'undefined file'. Files used in Windows Movie Maker have to be compatible with the program as well.
A Windows Movie Maker project file (MSWMM) can only be edited/viewed in the Windows Movie Maker program.A Windows Movie Maker movie/video file is the Finished/Published version of the project file which has been converted to a finished Standard Format for viewing.
convert it into .DAT format
You have to Publish the video first (that is exporting). The process changes the Windows Movie Maker file to a Standard viewing format (and not a project file).
You can't convert a Windows Movie Maker (MSWMM) file. All you have to do is Publish or Finish your project in the program. The publishing/finishing process automatically converts the file name extension (format) into Standard Viewing Format.
A Windows Movie Maker project file is in .MSWMMformat.
No. Added, Why not? I could open the avi format file with window movie maker, you sure yours running on the latest version?
You can't index a file for Windows Movie Maker.
The Windows Movie Maker file (MSWMM) must be Published or Finished in the program in order for the file to be converted to a Standard viewing format.
You have to convert it to a file name extension (format) that Windows Movie Maker uses.