- Extension
- .asf
- .sph
- Format
- Binary
- Binary
- Category
- Video
- Audio
- Developer
- Microsoft
- NIST
- Description
- An ASF file is a media file stored in the Advanced Systems Format (ASF), a proprietary video and audio container format. It contains audio and video data and optional metadata, such as title, author, and copyright bibliographic data. ASF files are developed by Microsoft primarily for streaming media.
- Waveform audio file created in the NIST SPHERE format, which is often used in speech recognition research; often contains a recording of a person speaking; can be provided as input to speech recognition systems.
- MIME Type
- video/x-ms-asf
- audio/x-nist-sph
