FILExt - The File Extension Source

Details for file extension .ASF are on this page. Because there is no central registry for file extensions and their associated programs there may be multiple entries on this page. And, because there are many (some say over a million) such associations not all may be listed here.

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Windows can't open .ASF files?
If Windows is unable to open files with the extension .ASF you may not have the appropriate program installed or, you may have registry errors. To help, we strongly recommend you run this free registry scan.

A search on the file extension you submitted shows 6 record(s). The details for each of these are shown below. The best FILExt can do for you is provide the details we know about. Selecting the information that applies to your particular situation is up to you. Use any hints provided. If the information here is not helpful, FILExt is sorry; but as a research site FILExt cannot provide personal support. If you need further information you might try the research tips on the FILExt Help Me page.

Extension: ASF
Program and/or Extension Function [What's This?]		Company [What's This?]
Advanced Streaming Format		Microsoft Corporation
Specific Notes [What's This?]
Advanced Streaming Format is an open file format specification for streaming multimedia files containing text, graphics, sound, video, and animation. Advanced Streaming Format (ASF) does not define the format for any media streams within the file. Rather, it defines a standardized, extensible file container that is not dependent on a particular operating system or communication protocol, or on a particular method (such as HTML or MPEG 4) used to compose the data stream in the file. An ASF file consists of three objects: a Header object containing information about the file itself, a Data object containing the media streams, and an optional Index object that can help support random access to data within the file. The ASF specification has been submitted to the ISO (International Organization for Standardization) for consideration. A number of programs capture this file extension. Recommended: Find ASF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
audio/asf application/asx video/x-ms-asf-plugin application/x-mplayer2 video/x-ms-asf application/vnd.ms-asf video/x-ms-asf-plugin video/x-ms-wm video/x-ms-wmx		Media Player Formats AudioPlayer for Audio-only Files FILExt CODEC and Video Player FAQ
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
ASFFile AshampooMediaPlayer.VideoFile Cliprex Video File IrfanView.asf MMJB.ASF SlowView AVI UltraPlayer.AudioFile Winamp.File Winamp3.File
General Notes [What's This?]
Various programs use this extension; too many to list individually. Take clues from the location of the file as a possible pointer to exactly which program is producing the file. The file's date and time can also help if you know which programs you were running when the file was written.
This is record 1240 last modified on 2008-12-15 and created on 2003-01-14.

Extension: ASF
Program and/or Extension Function [What's This?]		Company [What's This?]
APL*Plus /PC APL Shared File
Specific Notes [What's This?]
(None) Recommended: Find ASF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 1241 last modified on 2007-04-17 and created on 2003-01-14.

Extension: ASF
Program and/or Extension Function [What's This?]		Company [What's This?]
Electronic Arts Music File		Electronic Arts, Inc.
Specific Notes [What's This?]
An extension used in a number of Electronic Arts games/sites. Recommended: Find ASF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 1242 last modified on 2003-12-30 and created on 2003-01-14.

Extension: ASF
Program and/or Extension Function [What's This?]		Company [What's This?]
FIFA Football 2004 Audio File		Electronic Arts, Inc.
Specific Notes [What's This?]
(None) Recommended: Find ASF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
	Audio	None
Identifying Characters [What's This?]
Hex: 53 43 48 6C ASCII: SCHl
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 15562 last modified on 2003-12-30 and created on 2003-12-30.

Extension: ASF
Program and/or Extension Function [What's This?]		Company [What's This?]
Lotus Screen Font		IBM
Specific Notes [What's This?]
This was a Lotus product. Lotus was bought out by IBM. Recommended: Find ASF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 1243 last modified on 2003-01-14 and created on 2003-01-14.

Extension: ASF
Program and/or Extension Function [What's This?]		Company [What's This?]
STATGRAPHICS Data File		Manugistics, Inc.
Specific Notes [What's This?]
The pre-Windows version of STATGRAPHICS (16-bit DOS) used the extension .ASF. Current versions do not. Recommended: Find ASF errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 1244 last modified on 2004-08-27 and created on 2003-01-14.

System Info for File Extension .ASF

FILExt has been given permission to display the file extension database produced by the Associate This! program. Some of that data has already been included into the main FILExt database; but, not all. Those entries which have not yet been incorporated are shown below in the hope that they will be of some use. Data collected by FILExt on registered file extensions from user systems is also in the display. Be aware this is raw data which may require further research on your part to fully understand. In particular, look at the Program ID. Often a company will put the program's name into the short ID that Windows uses to open registered file extensions. If that's not the case, look at the complete path to the EXE file. Often, programs will install themselves into directories that give either the program or company name. The program name itself may also be used as the EXE file name. These listings are particularly important since they represent listings that are in actual use by users who have sumbitted data to FILExt and therefore these listings can point you to the most likely candidate should there be multiple entries in the FILExt main database.

Program Name and MIME Type Info for File Extension .ASF

FILExt has been given permission to display a Program Name/MIME type database collected by Anthony R. Nemmer. Some of that data has already been included into the main FILExt database; but, not all. Those entries which have not yet been incorporated are shown below in the hope that they will be of some use. Be aware this is raw data which may require further research on your part to fully understand. MIME type listings often contain the name of a program or, at a minimum, a type of file as the leading text in the MIME type.

General Info

• If the extension you are looking for is of the form .??_ the file is likely a compressed file and part of an install routine. When the install program runs it will expand the file and replace the underscore with the proper letter for the file type.
• If the file is sent as an audio file with any three-character extension it may be a dictation file where the extension is the dictator's initials; playable by BCB Voice Systems software (see ??? extension). The file could likewise be a dictation file in TrueSpeech format. Use Windows Sound Recorder and/or Media Player to play these back.
• If the extension you are looking for has a number at the end or is only a number and there were no results consider entering the same extension format using zero or one as some programs produce numbered split files but when the split can be extensive (e.g., .000-.999) only the first entry is in the database.

Need more information about any entries on this page? Try a Google search using terms in the above information along with words like "format," "convert," "conversion," and even "hacking." A search box is provided here for your convenience.

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