| File Type 1 |
Subsampled Raw YUV Image (Most common) |
| File Format |
File |
| Common? |
No |
| File Description |
One of three files from a split PPM file; others are .V and .Y files; YUV representation is used by the Stanford MPEG codec |
| Program(s) that open u files |
Mac: Apple QuickTime Player with QuickTime YUV codec
Windows: Windows Media Player with YUV Genius package; Apple QuickTime Player with QuickTime YUV codec |
| File Type 2 |
Unreal Tournament Class Package |
| File Format |
File |
| Common? |
No |
| File Description |
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 |
| Program(s) that open u files |
Mac / Windows: Epic Games Unreal Tournament
Windows: Edit with Epic Games UnrealEd |
| File Type 3 |
AU Audio File |
| File Format |
Standard File |
| Common? |
No |
| File Description |
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. |
| Program(s) that open u files |
Mac / Windows: Apple QuickTime Player; Microsoft Windows Media Player; RealNetworks Real Player |
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