Editing Advanced Systems Format (section)

{{Short description|File format}}
{{redirect-multi|4|.wmv|WMV file|.wma|WMA file|the video codec|Windows Media Video|the audio codec|Windows Media Audio}}
{{Infobox file format
| name          = Advanced Systems Format
| icon          = Computer icons of for ASF, WMA and WMV files.png
| icon_size     = x64px
| iconcaption   = {{midsize|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 {{mono|.asf}}, {{mono|.wma}}, and {{mono|.wmv}} files.}}
| extension     = .asf .wma .wmv
| mime          = video/x-ms-asf, application/vnd.ms-asf<ref>{{cite web|url=https://www.iana.org/assignments/media-types/application/vnd.ms-asf|publisher=[[Internet Assigned Numbers Authority|IANA]]|year=1997|author=Microsoft|author-link=Microsoft|title=Registration of MIME media type application/vnd.ms-asf|website=iana.org}}</ref>
| magic         = 30 26 B2 75 8E 66 CF 11 
A6 D9 00 AA 00 62 CE 6C<ref name="LoC">{{cite web |publisher=[[Library of Congress]]|work=Digital Preservation|date=2014-02-04|access-date=2014-03-12|url=http://www.digitalpreservation.gov/formats/fdd/fdd000067.shtml |title=ASF (Advanced Systems Format)}}</ref>
| standard      = 
| url           = 
| type code     = 'ASF_'
| uniform type  = com.microsoft.advanced-systems-format
| owner         = [[Microsoft]]
| type          = [[Container format (digital)|Container format]]
| container for = [[Windows Media Audio]], [[Windows Media Video]], [[VC-1]]
| contained by  = 
| extended from = 
| extended to   = 
| released      = Proprietary: {{start date and age|1996|09|16|df=y}}<ref>{{Cite web|title=Advanced Streaming Format|url=https://www.tech-insider.org/digital-video/research/1997/asf/index.htm|access-date=2021-12-13|website=Tech Insider}}</ref><ref>{{Cite news|date=1996-09-16|title=Microsoft Introduces NetShow, A Platform for Delivering Multimedia Content Over Intranets|url=https://news.microsoft.com/1996/09/16/microsoft-introduces-netshow-a-platform-for-delivering-multimedia-content-over-intranets/|access-date=2021-12-13|website=Microsoft Stories}}</ref><br/>Public: {{start date and age|1998|02|26|df=y}}<ref>{{cite IETF |title=Advanced Streaming Format (ASF) Specification |draft=draft-fleischman-asf-01 |last1=Fleischman |first1=Eric |date=26 February 1998 |publisher=Internet Engineering Task Force |access-date=13 December 2021}}</ref>
| latest_release_version = 01.20.03
| latest_release_date = {{start date and age|2004|12|df=y}}
| open          = Yes
| free          = No<ref>{{cite tech report |publisher=Library of Congress |location=Washington, D.C. |series=Sustainability of Digital Formats |type=Full draft |title=ASF (Advanced Systems Format) |date=6 April 2007 |url=https://www.loc.gov/preservation/digital/formats/fdd/fdd000067.shtml |access-date = 1 December 2021}}</ref>
}}

'''Advanced Systems Format''' (formerly '''Advanced Streaming Format''', '''Active Streaming Format''') is [[Microsoft]]'s [[Proprietary software|proprietary]] [[digital audio]]/[[digital video]] [[container format (digital)|container format]], especially meant for [[streaming media]]. ASF is part of the [[Media Foundation]] framework.