Convert ASF to AVI

ASF to AVI Software converts ASF to AVI quickly. Besides AVI, the converter could convert ASF to common video formats and portable devices, for example, DivX, Xvid, 3GP, MKV, MPEG, iPad, WebM, M4V, FLV, BlackBerry, and so on.

The converter is an all-in-one video converter that supports more than 100 video and audio file formats and converts to 40 popular formats. It could convert DXA to FLV, NSV to OGV, PSX to OGV, THD to WebM, FLIC to M4V, MPEG to 3G2, MPG to 3GP, ROQ to PSP, and so on.

ASF to AVI Software supports batch conversion and is full compatible with 32-bit and 64-bit editions Vista and Windows 7.

What is ASF?
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 Windows Media framework.

ASF is based on serialized objects which are essentially byte sequences identified by a GUID marker.

The format does not specify how (i.e. with which codec) the video or audio should be encoded; it just specifies the structure of the video/audio stream. This is similar to the function performed by the QuickTime, AVI, or Ogg container formats. One of the objectives of ASF was to support playback from digital media servers, HTTP servers, and local storage devices such as hard disk drives.

The most common filetypes contained within an ASF file are Windows Media Audio (WMA) and Windows Media Video (WMV). Note that the file extension abbreviations are different from the codecs which have the same name. Files containing only WMA audio can be named using a .WMA extension, and files of audio and video content may have the extension .WMV. Both may use the .ASF extension if desired.

ASF files can also contain objects representing metadata, such as the artist, title, album and genre for an audio track, or the director of a video track, much like the ID3 tags of MP3 files. It supports scalable media types and stream prioritization; as such, it is a format optimized for streaming.

The ASF container provides the framework for digital rights management in Windows Media Audio and Windows Media Video. An analysis of an older scheme used in WMA reveals that it is using a combination of elliptic curve cryptography key exchange, DES block cipher, a custom block cipher, RC4 stream cipher and the SHA-1 hashing function.

ASF container-based media is usually streamed on the internet either through the MMS protocol or the RTSP protocol.

What is AVI?
Audio Video Interleave, known by its acronym AVI, is a multimedia container format introduced by Microsoft in November 1992 as part of its Video for Windows technology. AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback. Like the DVD video format, AVI files support multiple streaming audio and video, although these features are seldom used. Most AVI files also use the file format extensions developed by the Matrox OpenDML group in February 1996. These files are supported by Microsoft, and are unofficially called "AVI 2.0".

There is slight overhead when used with popular MPEG-4 codecs (Xvid and DivX, for example), increasing file size more than necessary. The AVI container has no native support for modern MPEG-4 features like B-Frames. Hacks are sometimes used to enable modern MPEG-4 features and subtitles, however, this is the source of playback incompatibilities.

Step-by-Step Instructions to Converting ASF to AVI

1. Free Download ASF to AVI Software
2. Install the software by step-by-step instructions
3. Launch ASF to AVI Software
4. Choose ASF files


Click "Add Files" to choose ASF files and add them to conversion list.


Choose one or more ASF files you want to convert and then click Open.


5. Choose "to AVI"



[Optional] If you want to change AVI encoding parameters, for example, vodec codec, bit rate, frame rate, video size, and aspect ratio, please click "Options".




[Optional] Switch to tab "Video Options" and then set encoding parameters.


6. Convert ASF to AVI


Click "Convert" to convert ASF files to AVI.


The software is converting ASF to AVI.


7. Play & Browse


When conversion completes, you can right-click converted item and choose "Play Destination" to play the outputted file; or choose "Browse Destination Folder" to open Windows Explorer to browse the outputted file.


8. Done

Free Download ASF to AVI Software

ASF to AVI Software is 100% clean and safe to install. It's certified by major download sites.

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