Back Advanced Systems Format Catalan Advanced Systems Format Czech Advanced Systems Format Danish Advanced Streaming Format German Advanced Streaming Format Spanish ASF Finnish Advanced Systems Format French Advanced Streaming Format Hungarian Advanced Systems Format Armenian Advanced Systems Format ID
 This image illustrates the computer icons that Windows Vista displays for Advanced Systems Format, depending on the file name extension. From left to right, the icons correspond to .asf, .wma and .wmv files. | |
| Filename extension |
.asf .wma .wmv |
|---|---|
| Internet media type |
video/x-ms-asf, application/vnd.ms-asf[1] |
| Type code | 'ASF_' |
| Uniform Type Identifier (UTI) | com.microsoft.advanced-systems-format |
| Magic number | 30 26 B2 75 8E 66 CF 11 A6 D9 00 AA 00 62 CE 6C[2] |
| Developed by | Microsoft |
| Initial release | Proprietary: 16 September 1996[3][4] Public: 26 February 1998[5] |
| Latest release | 01.20.03 December 2004 |
| Type of format | Container format |
| Container for | Windows Media Audio, Windows Media Video, VC-1 |
| Open format? | Yes |
| Free format? | No[6] |
Advanced Systems Format (formerly Advanced Streaming Format, Active Streaming Format) is Microsoft's proprietary digital audio/digital video container format, especially meant for streaming media. ASF is part of the Media Foundation framework.
- ^ Microsoft (1997). "Registration of MIME media type application/vnd.ms-asf". iana.org. IANA.
- ^ "ASF (Advanced Systems Format)". Digital Preservation. Library of Congress. 2014-02-04. Retrieved 2014-03-12.
- ^ "Advanced Streaming Format". Tech Insider. Retrieved 2021-12-13.
- ^ "Microsoft Introduces NetShow, A Platform for Delivering Multimedia Content Over Intranets". Microsoft Stories. 1996-09-16. Retrieved 2021-12-13.
- ^ Fleischman, Eric (26 February 1998). Advanced Streaming Format (ASF) Specification. Internet Engineering Task Force. I-D draft-fleischman-asf-01. Retrieved 13 December 2021.
- ^ ASF (Advanced Systems Format) (Full draft). Sustainability of Digital Formats. Washington, D.C.: Library of Congress. 6 April 2007. Retrieved 1 December 2021.