ASF, i.e. Advanced Streaming Format, is developed by Microsoft to play full-motion video online and let users play video while download it. With the biggest advantage of small volume, ASF is suitable for network transmission and could be played directly by the latest Microsoft Windows Media Player by Microsoft. ASF audio format could be not only formed by combining images, sound and animation data but also converted from other audios of format.

MKV is a common video file defined by Matroska Media, a new multimedia package format. The feature of MKV is that it could hold many types of encoded video, audio and subtitles stream.

To convert asf to mkv, please install the latest Windows Media Player which contains the latest asf codec or decoder. 

Download MKV Converter which can convert asf to mkv file. Then please install MKV codecs. Select an asf file, set some parameters such as DivX or XviD as the video compressor,  Microsoft ADPCM as the audio compressor, adjust the resolution, frame rate etc if necessary.

3GPP2 means The 3rd Generation Partnership Project 2 (3GPP2) found in January 1999 by 4 standardized organizations respectively being Telecommunications Industry Association (North America), Telecommunication Technology Committee (Japan), Association of Radio Industries and Business (Japan) and Telecommunications Technology Association (South Korea), 3GPP2 aims differently from 3GPP by making the 3rd Generation technical specification with the CDMA2000 as the wireless interface on the base of ANSI-41core network. The file extension is *.3g2.

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