OPUS to FLAC Converter

Convert OPUS to FLAC online, for free.



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Auto
Sets how the audio is encoded. "Auto" suits most conversions. "Copy" reuses the audio as-is, so it is fast and keeps full quality, but only when the output format supports it.
100% represents the original volume. To double the volume, increase it to 200%. To reduce volume by half, select 50%
Fades the audio in at the start of the output.
Fades the audio out at the end of the output.
Enable if you want to reverse audio stream
5 (Default)
Higher values compress more and produce smaller files, but take longer to compress.
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Specify the end position of trim (HH:MM:SS.MS). Leave at 00:00:00.00 to disable.


How to Convert OPUS to FLAC?

  1. Click the “Choose Files” button to select your OPUS files.
  2. Click the “Convert to FLAC” button to start the conversion.
  3. When the status change to “Done” click the “Download FLAC” button

Easy to Use

Simply upload your OPUS files and click the convert button. You can also batch convert OPUS to FLAC format.

Best Quality

We use both open source and custom software to make sure our conversions are of the highest quality. In most cases, you can fine-tune conversion parameters using “Advanced Settings” (optional, look for the icon).

Free & Secure

Our OPUS to FLAC Converter is free and works on any web browser. We guarantee file security and privacy. Files are protected with 256-bit SSL encryption and automatically deleted after 8 hours.


Opus is an open, royalty-free lossy audio codec standardised by the IETF as RFC 6716. It was designed to cover everything from low-bitrate speech to full-quality stereo music in a single codec, and it consistently outperforms MP3 and AAC at the same bitrate. Opus powers voice and audio in WhatsApp, Discord, Zoom, YouTube, and every WebRTC browser call, which makes it one of the most widely used audio codecs in the world.

 

How to open an Opus file?

Every major web browser plays Opus natively, so dragging the file into a browser tab works. On the desktop, VLC media player and foobar2000 both support it out of the box.

 

Android plays Opus natively, and FFmpeg handles conversion from the command line. Some older hardware players, car stereos, and editing programs still do not recognise the format — in that case convert it with our Opus to MP3 tool. You can also convert the file with our OPUS to MP3 tool.

 

Developed by: Xiph.Org Foundation, Mozilla, and Skype

Initial Release: 2012


Free Lossless Audio Codec (FLAC) is a file format that shrinks an audio file’s size, which, as the word “lossless” in the name implies, results in no loss in audio quality or original data. FLAC accomplishes this by using an algorithm that compresses the file to approximately 50 to 70 percent of its original size.

 

How to open a FLAC file?

The default program for opening a FLAC file is VLC media player. Other details about FLAC include that it is unpatented, permits music reproduction, is compatible with Telephony Application Programming Interface (TAPI), and is not subject to digital rights management (DRM).

 

Additionally, codecs that can implement FLAC include FFmpeg, Flake and FLACCL for encoding, and Audiocogs for decoding. Lastly, as the word “free” in the name suggests, FLAC is open-source software.

 

Developed by: Xiph.Org Foundation

Initial Release: 2001

Useful links:

https://en.wikipedia.org/wiki/FLAC

https://xiph.org/flac/


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