What is the MP file format?
.mp files are used by Maya Personal Learning Edition (PLE), a discontinued free edition of Autodesk's 3D modeling and animation software. The PLE program ran from 2003 (Maya 5 PLE) through its final release, Maya PLE 8.5 in 2007, after which Autodesk replaced it with free trial and education licenses that save standard .ma or .mb files instead.
The paid edition of Maya is used for professional special effects in the film industry, as well as in game production, video and animation, and interactive 3D applications. The PLE version, which produces .mp files, offered the same core set of features, including:
- 3D modeling
- advanced rendering options
- simulation packages for water, gas, cloth and fur physics
- dynamic collision and geometry engine
- MEL (Maya Embedded Language), Maya's dedicated scripting language
All those functions can be used to create objects and save them into .mp files. Each file stores information about the virtual scene and its nodes along with their parameters, in either ASCII text or binary form - mirroring Maya's .ma and .mb formats respectively, but locked to the PLE edition.
Each .mp file contains a watermark that identifies it as a PLE-generated file and prevents commercial use of projects created with the free version. For additional security, .mp uses a format that the full commercial Maya cannot open - the lock is deliberate, keeping learning-edition work out of professional pipelines. With PLE long discontinued and difficult to obtain, .mp files are effectively orphaned today; they can only be opened in the exact same Maya PLE version that created them.
Security & safety
RISK: LOWA Maya PLE .mp is a 3D scene data file with no executable payload, so it isn't a malware risk to handle. The real 'risk' is practical: the file is locked to a discontinued edition, so people search for 'mp file opener/converter' and may download bogus tools or adware that claim to open it - none legitimately do. There is no genuine third-party .mp converter; be skeptical of any download promising one. If the .mp is actually a MetaPost text file, it's just plain text and equally harmless.
Format details
in a nutshell- MetaPost source (.mp) - A plain-text MetaPost graphics-programming source file (TeX ecosystem), compiled with the
mposttool - unrelated to Maya. - FoxPro / generic 'multimedia' and other .mp uses - Various legacy tools used .mp for menu/temporary or media data; minor compared to the Maya PLE meaning.
Programs that open MP files
Windows2 apps
Autodesk Maya PLE (same version)
Free Open the .mp in the EXACT Maya PLE edition that created it (e.g. PLE 8.5). The full/commercial Maya cannot open .mp. PLE is discontinued and no longer officially distributed.
Autodesk Maya (trial/education) - for re-exported files only
Freemium Cannot open .mp directly. Use it to import an OBJ/FBX you exported from PLE, then continue work in standard .ma/.mb. 
macOS1 app
Autodesk Maya PLE (same version)
Free Open in the matching Maya PLE build for macOS that created the file. Commercial Maya will not open .mp. Technical details
deep spec| Format type | 3D scene/project file - PLE-restricted variant of Maya's scene formats |
| Encoding | Binary or ASCII text; binary variant mirrors Maya Binary (.mb), ASCII variant mirrors Maya ASCII (.ma) MEL-command format |
| Byte order | Little-endian (binary variant) |
| Scene structure | Maya DAG (Directed Acyclic Graph) of nodes: geometry, materials, lights, cameras and animation curves |
| PLE lock | File is tied to Personal Learning Edition; cannot be opened by full commercial Maya - a deliberate barrier to keep learning-edition work out of professional pipelines |
| Render watermark | Embeds a PLE watermark on rendered output frames, identifying the content as learning-edition and barring its commercial use |
| Version compatibility | Tied to the Maya PLE version that wrote it (e.g. Maya 6, 7 or 8.5 PLE); not cross-compatible between PLE versions or with commercial Maya |
| File identification (ASCII mode) | ASCII-mode files open with the header //Maya ASCII … - identical opening structure to a .ma file |
| Scripting language | MEL (Maya Embedded Language) - in ASCII-mode files, MEL commands embedded directly in the file define scene nodes and their attributes |
| Compression | None - scene data is stored uncompressed |
| Typical file size | Tens of KB to many MB, depending on scene geometry, textures and animation complexity |
| MIME type | application/octet-stream (no format-specific MIME type registered) |
| Platform | Windows and macOS - PLE builds were released for both operating systems |
| Successor format | No direct successor; Maya PLE was discontinued in 2007 and replaced by free Maya trial and education licenses that save standard .ma/.mb files without watermarking or PLE restrictions |
| Released | Maya Personal Learning Edition launched 2003 (Maya 5 PLE); .mp used by PLE builds |
| Latest version | Last with Maya PLE 8.5 (2007); PLE was discontinued thereafter |
| Specification | www.autodesk.com |
MP conversions
Community Q&A
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