ASF to M4A: Extract Audio from ASF(Advanced Streaming Format) Video to M4A(MPEG-4 Audio) with River Past Audio Converter, ASF2M4A converter, conversion
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.
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.
What is
M4A?
Because of its exceptional performance and quality, Advanced
Audio Coding (AAC) is at the core of the MPEG-4,
3GPP and 3GPP2
specifications and is the audio codec of choice for Internet, wireless and digital
broadcast arenas. AAC provides audio encoding that compresses much more efficiently
than older formats, such as MP3,
yet delivers quality rivaling that of uncompressed CD audio.
To encode MPEG-4 audio, you need to have River
Past MPEG-4 Booster Pack in addition to your audio software.
Additional Requirements
To extract audio from ASF(Advanced Streaming Format) video to M4A(MPEG-4 Audio) with River Past Audio Converter, you must have River Past MPEG-4 Booster Pack installed.
Launch River Past Audio Converter
Once River Past Audio Converter is installed properly, launch Audio Converter.
Add File
Click on the "Add File" button on the tool bar. The standard file open dialog appears. Select "ASF - Advanced Streaming Format" in its "Files of type" combo box.
Select the file you want to convert and click "Open". The file will be added to the conversion file list.
River Past Audio Converter
Select output format
Use the setting panel on the bottom of the window to control the output format. Click on the toggle to the left of the "Format" label to expand the panel. Select "M4A - MPEG-4 Audio" as the "Audio Type".
Troubleshoot
If you have MPEG-4 Booster Pack installed, but don't see M4A as an output option, you have a problem with QuickTime installation.
Please make sure you have the latest QuickTime installed. Occasionally, QuickTime may be corrupted due to conflict with some other software. In any case, reinstalling QuickTime should fix this problem.
You can change the sample rate, channel (stereo or mono) and bits/sample, and bitrate.
Note: To convert to MPEG-4 audio, you must have River Past MPEG-4 Booster Pack installed.
Select output directory
Expand the "Output Directory" panel. Use the "Browse" button to select an output directory.
Convert
Click the "Convert" button on the tool bar.
River Past Audio Converter
