You have old Windows Media Video files and you want only the soundtrack as an MP3. Extract the audio directly. The tool discards the video track. The resulting file is much smaller. Your files might be projects from Windows Movie Maker, early camcorder recordings, or downloaded clips. This guide shows you how to handle the video files themselves, not just an audio source.
Understanding WMV Files and Their Audio
WMV (Windows Media Video) files use the ASF container. The audio track inside is usually Windows Media Audio. Windows Movie Maker, discontinued by Microsoft in 2017, saved projects as WMV by default. Because the audio is compressed, the original video file may be larger than the extracted MP3. Home video audio was recorded at modest bitrates. Target 128 to 192 kbps for the MP3. DRM protected WMV files cannot be converted. Check your files before starting.
Preparing Your WMV Files for Conversion
Gather and Check Your Files
Gather the WMV files you want to process. They may be from a camcorder, a download, or an old Windows Movie Maker project. The tool on this site accepts .wmv, .asf, .avi, .mp4, .mov, and .mkv files. If your file has an .asf extension, use it. Batches are limited to 300 MB. If you have a large collection, process them in groups.
Check for DRM Protection
DRM protected WMV files cannot be converted. If you purchased or downloaded a protected file, you will not be able to extract the audio. Unprotected home videos and personal projects work.
How to Extract MP3 Audio from a WMV File
Convert a Single File
- Open your browser and go to the WMV to MP3 converter page on wmatomp3converterfree.net.
- Click the upload area and select the WMV file from your computer. You can also drag and drop.
- Choose the output bitrate. For most home videos, select 128 kbps or 192 kbps. The tool supports bitrates from 96 to 320 kbps.
- Click the convert button. The tool extracts the audio track and encodes it as an MP3.
- Download the resulting MP3 file. It will be smaller than the original WMV. The video track is gone.
Batch Processing Multiple Files
Upload several WMV files one after another. The total batch size must not exceed 300 MB. For larger collections, split them into smaller groups.
Choosing the Right MP3 Bitrate
The bitrate you select affects audio quality and file size. Home video audio was recorded at modest bitrates. For clear speech and basic music, 128 kbps is enough. For better fidelity, choose 192 kbps. The tool supports bitrates from 96 to 320 kbps. For archiving, 192 kbps offers a good balance. For voice-only recordings, 96 kbps may be acceptable.
What to Do with the Extracted MP3
Use the MP3 in any music player, audio editor, or device. The file is much smaller than the original WMV. The video track is removed. Convert the MP3 to another format later if needed. Store the original WMV separately if you want to keep the video.
- Add the MP3 to your music library.
- Use it in a podcast or audio project.
- Share it with others who only need the audio.
Troubleshooting Common Issues
If your WMV file does not convert, check the following:
- Is the file DRM protected? DRM protected WMV files cannot be converted.
- Is the file size within the 300 MB batch limit? Split the file or process it separately if not.
- Does the file have a supported extension? The tool accepts .wmv, .asf, .avi, .mp4, .mov, and .mkv.
If the file still fails, try a different browser. Check the file is not corrupted.
Alternatives for Windows Movie Maker Audio
Old Windows Movie Maker projects output WMV files containing the final video. Extract the audio to get the soundtrack without the video. This recovers the background music or narration from a project. The process is identical to any other WMV file. Upload the WMV from your Movie Maker project and choose your bitrate.
Files already in ASF format work in the same tool. ASF to MP3 conversion follows the same steps. WMV uses the ASF container.