ASF to MP3 - Convert audio online
Conversion Results:
| # | Output File | Source File | Action |
|---|
How to convert ASF to MP3:
1. Click the "Choose Files" button to select multiple files on your computer or click the "URL" button to choose an online file from URL, Google Drive or Dropbox. The source file can also be video format. Video and audio file size can be up to 200M. You can use file analyzer to get source audio's detailed information such as track name, genre, bitrate and sampling rate.
2. Set target audio format, bitrate and sample rate. The target audio format can be WAV, WMA, MP3, OGG, AAC, AU, FLAC, M4A, MKA, AIFF, OPUS or RA.
3. Click the "Convert Now!" button to start batch conversion. It will automatically retry conversion on another server if one fails, please be patient while converting. The output files will be listed in the "Conversion Results" section. Click icon to show file QR code or save file to cloud storage services such as Google Drive or Dropbox.
ASF vs MP3:
| Name | ASF | MP3 |
| Full name | Advanced Systems Format | MPEG-1 or MPEG-2 Audio Layer III |
| File extension | .asf | .mp3 |
| MIME | video/x-ms-asf, application/vnd.ms-asf | audio/mpeg, audio/MPA, audio/mpa-robust |
| Developed by | Microsoft | Fraunhofer Institute |
| Type of format | Digital container format | Digital audio |
| Introduction | 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 Media Foundation framework. | MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio which uses a form of lossy data compression. It is a common audio format for consumer audio streaming or storage, as well as a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players. |
| Technical details | The format does not specify how 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 use of lossy compression is designed to greatly reduce the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio. An MP3 file that is created using the setting of 128 kbit/s will result in a file that is about 1/11 the size of the CD file created from the original audio source. |
| Associated programs | Windows Media Player | VLC media player, MPlayer, Winamp, foobar2000. |
| Sample file | sample.asf | sample.mp3 |
| Wikipedia | ASF on Wikipedia | MP3 on Wikipedia |