CAVS to WMA Converter
Convert CAVS to WMA online for free. Fast, secure, and high-quality conversion with no sign-up or software required.
Maximum file size is 1GB
How it works
Three steps to your converted file
Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.
Upload your file
Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.
Choose an output format
Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.
Convert & download
Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.
What is a CAVS file?
The CAVS (Chinese Audio Video Standard) file format is a digital video compression standard developed by the Audio Video Coding Standard (AVS) Working Group of China to compete with H.264/AVC and MPEG-4. Officially known as GB/T 20090, this format utilizes 8x8 integer transformation and motion compensation similar to MPEG standards but with lower computational complexity, designed specifically for High-Definition (HD) digital broadcasting and IPTV services within China. It serves as the national standard for source coding, reducing reliance on foreign intellectual property licensing fees associated with international codecs.
How to open a CAVS file
Because CAVS is a regional standard specific to the Chinese broadcast ecosystem, native playback support on Western operating systems (Windows, macOS) is nonexistent. To view these files, users require a media player capable of utilizing the libavcodec library, such as VLC Media Player or FFmpeg-based tools, which include specific decoders for AVS1-P2 and AVS+ video streams.
CAVS Technical Info
- Full Name
- Chinese Audio Video Standard
- Developed By
- AVS Working Group
- Initial Release
- 2006
- MIME Type
- video/avs
What is a WMA file?
Windows Media Audio (WMA) refers to a series of audio codecs and their corresponding Microsoft container format, designed as a competitor to MP3 and RealAudio. The standard WMA codec is lossy, but the format family includes WMA Lossless, WMA Pro (multichannel), and WMA Voice. It utilizes the Advanced Systems Format (ASF) container structure and supports digital rights management (DRM), which historically restricted playback to authorized Windows devices.
How to open a WMA file
WMA files are native to the Windows ecosystem and open by default in Windows Media Player and Movies & TV. macOS users require third-party components like Flip4Mac (legacy) or universal players such as VLC Media Player and Elmedia Player to decode the stream. Android and Linux support is generally provided via VLC or by installing ffmpeg-based media libraries.
WMA Technical Info
- Full Name
- Windows Media Audio
- Developed By
- Microsoft
- Initial Release
- 1999
- MIME Type
- audio/x-ms-wma
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Convert CAVS to WMA in seconds
Every CAVS to WMA conversion runs on our servers, so your device stays fast and the output quality stays intact.
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No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.
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Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.
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Developer API
Convert CAVS to WMA via API
Automate CAVS to WMA conversions in three steps: create a job, upload your file, then poll for the result.
# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"tag": "cavs-to-wma",
"tasks": {
"upload-file": {
"operation": "import/upload"
},
"convert": {
"operation": "convert",
"input": "upload-file",
"output_format": "wma"
},
"export-result": {
"operation": "export/url",
"input": "convert"
}
}
}'
# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.cavs
# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
-H "Authorization: Bearer YOUR_API_KEY"Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.