AAC to ASF
Convert AAC to ASF, AAC to ASF Converter
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AAC to ASF Converter converts AAC to ASF. The software is an ALL-IN-ONE audio converter that supports more than 100 audio and video files.
AAC to ASF Converter supports batch conversion and is full compatible with Vista and Windows 7.
What is AAC?
AAC has been standardized by ISO and IEC, as part of the MPEG-2 & MPEG-4 specifications. The MPEG-2 standard contains several audio coding methods, including the MP3 coding scheme. AAC is able to include 48 full-bandwidth (up to 96 kHz) audio channels in one stream plus 15 low frequency enhancement (LFE, limited to 120 Hz) channels and up to 15 data streams. AAC is able to achieve indistinguishable audio quality at data rates of 320 kbit/s (64kbit/s/channel) for five channels. The quality is close to CD also at 96 kbit/s (48kbit/s/channel) for stereo.
AAC's best known use is as the default audio format of Apple's iPhone, iPod, iTunes, and the format used for all iTunes Store audio (with extensions for proprietary digital rights management).
AAC is also the standard audio format for Sony's PlayStation 3 and is supported
by Sony's Playstation Portable, latest generation of Sony Walkman, Sony Ericsson
Walkman Phone, Nintendo's Wii (with the Photo Channel 1.1 update installed for
Wii consoles purchased before late 2007) and the MPEG-4 video standard. HE-AAC
is part of digital radio standards like DAB+ and Digital Radio Mondiale.
What is ASF?
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.
AAC to ASF Related Topics: M4R to ASF, SPX to ASF, MIDI to ASF, AAC to ASF, WV to ASF, KAR to ASF, QCP to ASF, W64 to ASF, MPC to ASF, WAV to ASF, AIFF to ASF, AC3 to ASF, MO3 to ASF, MKA to ASF, WMA to ASF, CDA to ASF, VQF to ASF, FLAC to ASF, S3M to ASF, RMJ to ASF, DTS to ASF, OGG to ASF, MOD to ASF, ALAC to ASF, RAM to ASF, UMX to ASF, GSM to ASF, M2A to ASF, MLP to ASF
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