.U File Extension
Unreal Tournament Class Package
| Developer | Epic Games |
| Popularity |
3.7 | 30 Votes |
| Category | Game Files |
| Format | Binary |
What is a U file?
Contains settings used by Unreal Tournament; stored within the Unreal System directory, i.e. "\Unreal\System\Engine.u;" may be replaced with custom class packages.
Programs that open or reference U files
AU Audio File
| Developer | N/A |
| Popularity |
3.3 | 9 Votes |
| Category | Audio Files |
| Format | N/A |
What is a U file?
Audio container format typically used to store ?-law encoded audio data; introduced by Sun Microsystems and also used by MusicKit for the NeXT operating system; contains a header that includes six 32-bit words, an optional information section, then the audio data.
AU files typically use the .AU extension.
Programs that open U files
Subsampled Raw YUV Image
| Developer | N/A |
| Popularity |
2.7 | 7 Votes |
| Category | Raster Image Files |
| Format | Binary |
What is a U file?
Subsampled "U" image created by ppmtoyuvsplit, a Unix-based command-line utility that splits .PPM files into .Y, U, and .V files; contains the "U" chrominance, or color, component for the image; used for storing image data in a format required by the Stanford MPEG codec.
Y, U, and V files can be built back into their original PPM file using the yuvsplittoppm utility.
NOTE: The ppmtoyuvsplit and yuvsplittoppm programs are part of netpbm, a Unix-based graphics package.