".wmv", "WMV file", ".wma", and "WMA file" redirect here. For the video codec, see Windows Media Video. For the audio codec, see Windows Media Audio.
Advanced Systems Format
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; 27 years ago (1996-09-16)[3][4] Public: 26 February 1998; 26 years ago (1998-02-26)[5]
Latest release
01.20.03 December 2004; 19 years ago (2004-12)
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.
^"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.
and 27 Related for: Advanced Systems Format information
AdvancedSystemsFormat (formerly Advanced Streaming Format, Active Streaming Format) is Microsoft's proprietary digital audio/digital video container...
AdvancedFormat (AF) is any disk sector format used to store data on magnetic disks in hard disk drives (HDDs) that exceeds 528 bytes per sector, frequently...
copying). Other later-developed media container formats such as Microsoft's AdvancedSystemsFormat or the Matroska and Ogg containers lack this abstraction...
formats such as HD DVD and Blu-ray Disc and became known as VC-1. Microsoft also developed a digital container format called AdvancedSystemsFormat to...
the following MIME types: AdvancedSystemsFormat (ASF) is Microsoft's proprietary digital audio/digital video container format, especially meant for streaming...
The Advanced Authoring Format (AAF) is a file format for professional cross-platform data interchange, designed for the video post-production and authoring...
A video file format is a type of file format for storing digital video data on a computer system. Video is almost always stored using lossy compression...
Container is similar in concept to other containers like AVI, MP4, or AdvancedSystemsFormat (ASF), but is an open standard. Matroska file extensions are .mkv...
Advanced Photo System (APS) is a discontinued film format for still photography first produced in 1996. It was marketed by Eastman Kodak under the brand...
rates. Microsoft has also developed a digital container format called AdvancedSystemsFormat to store audio encoded by WMA. The first WMA codec was based...
Media Video) or ASF (AdvancedSystemsFormat) movie file. HyperCam will also record all sound output, and sound from the system microphone can also be...
Media Encoder Windows Media Services Windows Movie Maker AdvancedSystemsFormat (ASF) Advanced Stream Redirector (ASX) Windows Media Audio (WMA) Windows...
February 2013. Retrieved 21 July 2019. ASF (AdvancedSystemsFormat) (Full draft). Sustainability of Digital Formats. Washington, D.C.: Library of Congress...
finally released the protocol specification in February 2008. AdvancedSystemsFormat Microsoft (5 November 2014). "Network Ports Used by Key Microsoft...
file formats are Windows Media Video (WMV), Windows Media Audio (WMA), and AdvancedSystemsFormat (ASF), and its own XML based playlist format called...
14496-1 (MPEG-4 Part 1: Systems), in which the file format for MPEG-4 content was previously specified. The MPEG-4 file format, version 1, was published...
Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images...
Advanced Renamer Flickr (to parse the metadata from uploaded images) Hugin XnView ExifTool can read, edit or create files with the following formats:...
data types. Simpler container formats can contain different types of audio formats, while more advanced container formats can support multiple audio and...
use. In some cases, the formatting operation may also create one or more new file systems. The first part of the formatting process that performs basic...
multichannel sound. The video and audio streams are encapsulated in AdvancedSystemsFormat files. WMV HD has been touted for its ease of use, since functionality...
An audio file format is a file format for storing digital audio data on a computer system. The bit layout of the audio data (excluding metadata) is called...
different vendors of Unix systems. In 1999, it was chosen as the standard binary file format for Unix and Unix-like systems on x86 processors by the 86open...
airplanes or hotels). Active Streaming Format (ASF) (later renamed Advanced Streaming Format, then to AdvancedSystemsFormat) Microsoft Media Server (MMS) "Microsoft...
Global Information