How to Convert AU to CDDA — Quick & Free
Fast, instant AU to CDDA conversion. No signup required. Just drop your .au file and get .cdda in seconds.
Batch Settings
还在为那些老旧的AU音频文件感到头疼吗？无论是想把它们刻录到CD光盘上，还是希望在各种设备上流畅播放，将AU格式转换为CDDA（也就是我们常说的CD音轨格式）都是个不错的选择。这个过程不仅能让你的音频拥有更好的兼容性，还能确保音质在传统播放设备上得到完美呈现。想象一下，那些经典的声音，通过CDDA格式，重新焕发活力，无论是分享给朋友，还是自己珍藏，都将变得更加便捷和纯粹。我们深知您对音频质量和使用便利性的追求，因此提供了这个简单高效的转换工具，让您的数字音频生活更添色彩。
- 游戏配乐CD化
- 车载CD播放
- 无损音乐分享
在华语地区，CDDA格式因其在传统音响设备上的兼容性和无损特性，至今仍受到部分音乐发烧友和收藏爱好者的青睐，尤其是在追求高音质体验时。
About AU to CDDA Conversion
Short answer: yes, you can convert AU to CDDA online for free, and quality is well preserved with the right settings. Just upload your .au file to CocoConvert, pick CDDA as the output, and click Convert. The whole process takes seconds.
Now for the details. AU is a widely used file format. CDDA is a widely used file format. Converting between these two formats lets you convert between formats quickly.
Your AU file is decoded and re-encoded as CDDA. Converting AU to CDDA maintains high quality with CocoConvert's optimised encoder settings.
CocoConvert runs entirely online — no software to install, no account to create. Your files are encrypted during upload (TLS), processed on isolated servers in Germany, and permanently deleted after 24 hours. It works in Chrome, Safari, Firefox, Edge, and all mobile browsers.
Need to convert more than one file? Free users can do 5 per hour. Pro gets 100 per hour with files up to 5 GB each.
How to Convert AU to CDDA
- 1
1. Upload AU
Drop your .au file onto the page (or tap "Browse" on mobile). Add multiple files for batch conversion.
- 2
2. Select CDDA
Choose .cdda from the output dropdown. Settings are pre-configured for best results.
- 3
3. Convert
One click. The server handles all the heavy lifting using FFmpeg and Sharp.
- 4
4. Download
Your .cdda file is ready. Download it directly or get all files as a zip archive.
What Happens When You Convert AU to CDDA
Your AU file is decoded and re-encoded as CDDA.
Your AU file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in CDDA format
The converted file is ready for download
Format Comparison
AU
.au file
| Extension | .au |
| MIME Type | audio/basic |
| Category | Audio |
CDDA
.cdda file
| Extension | .cdda |
| MIME Type | audio/x-cdda |
| Category | Audio |
Should You Convert AU to CDDA?
When to Convert
- ✓When you need a CDDA file
Frequently Asked Questions
Is AU to CDDA conversion free?
Yes. CocoConvert offers free AU to CDDA conversion with generous daily limits — 25 minutes of processing time and up to 5 files per hour (250 MB each). Pro plans remove these limits.
How fast is AU to CDDA conversion?
Most files convert in 2–10 seconds depending on size. Large audio files may take 30 seconds. Batch jobs process in parallel for maximum speed.
What happens to my files after conversion?
Your uploaded AU file and the converted CDDA file are both automatically deleted from our servers within 24 hours. They are never shared, sold, or analysed.
Does converting AU to CDDA lose quality?
Converting AU to CDDA maintains high quality with CocoConvert's optimised encoder settings.
Can I convert CDDA back to AU?
Yes, CocoConvert supports CDDA to AU conversion as well. However, if the original conversion involved lossy compression, converting back won't recover the lost data.
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