Extract text from annotation or audio files (NAF)
To convert NAF audio files to another format, you need Autodesk 3ds Max or other Data software.
To convert other file formats to the "Multi-format Game & Data File" file type, you need software like Autodesk 3ds Max or a similar tool.
The .NAF file extension is notoriously fragmented, representing several completely unrelated formats across different industries. Most commonly, it serves as an NLP Annotation Format document. This is an XML-based standard utilized by the NewsReader Project and the IXA pipeline to store metadata for natural language processing. Alternatively, .NAF files are heavily used as 3D animation data files for legacy and proprietary video game engines. This includes the Nebula Device, NetImmerse, and specific MMO titles like Blade & Soul published by Nexon. Finally, the extension is also deployed by NICE Systems as a secure Voice Logger Audio file (frequently referred to as a Network Audio File) to record call center interactions.
The primary disadvantage of the .NAF extension is this extreme ambiguity combined with a heavy reliance on closed ecosystems. The 3D animation variants are compiled binaries permanently locked to outdated game engines, making it incredibly difficult to import them into modern 3D suites like Autodesk 3ds Max. The NICE audio variant is even more restrictive; these files are encrypted for legal compliance, requiring costly enterprise software to decrypt. Standard media players will simply fail to open them. Even the NLP variant, while technically just structured XML, can easily exceed hundreds of megabytes in plain text, crashing basic operating system text editors.
To make these files usable, users must convert them. The NLP variants should be parsed into standard XML or JSON for modern data pipelines. 3D animation files are best exported to FBX or OBJ, though game-specific rigging weights and bone hierarchies are frequently lost during translation. NICE audio files desperately require conversion to WAV or MP3 for standard playback.
Because this file format is so fractured and overwhelmingly proprietary, standard online converters almost always fail to process it. Typically, only the original authoring software can accurately read or export the underlying data. However, you can simply drag and drop your file into convert.guru to see what it is and convert it if supported. Our platform inspects the internal file signatures (such as RIFF headers or XML tags) to identify exactly which type of .NAF you possess. If our analysis detects a supported embedded format, viewing the raw data or converting it may still be possible.
Convert.Guru analyzes your NAF file, detects the exact format, and lets you read the text inside.
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If you want to convert NAF file to CSV, JSON, XML, YAML, YML, TOML, INI, CFG, CONF, DAT, DB or SQL, you can use Autodesk 3ds Max or similar software from the "Annotation, Animation, Audio Storage" category. In the File menu, look for Save As… or Export….
To convert DBF, XML, SQLITE, XLSX, SQL, TSV, ACCDB, YAML, MDB, CSV, ODS or JSON files to NAF, try Autodesk 3ds Max or another comparable tool in the "Annotation, Animation, Audio Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our NAF converter.