Free online OPUS to TTA converter

Source format: Opus

Opus is a modern, highly efficient audio codec designed for speech and music alike. It is widely used in VoIP, online meetings, streaming, gaming voice chat, and web audio because it delivers good quality at low bitrates and handles both narrowband speech and full-band music very well. Opus files are commonly stored in an .opus container, often based on Ogg.

Target format: TTA

TTA stands for True Audio, a lossless audio format. It is used by people who want exact audio preservation, such as archivists and audiophiles. Compared with lossy formats, TTA keeps the original PCM audio data intact after decoding, which makes it suitable for archiving and bit-perfect playback. Its main advantages are lossless compression, simple decoding, and good audio fidelity.

How to perform the conversion

Because Opus is lossy and TTA is lossless, converting from Opus to TTA does not restore lost audio detail; it only wraps the already-compressed audio into a lossless container after decoding. The best practical method is to use a desktop audio converter or command-line tools that can decode Opus and encode TTA.

Option 1: FFmpeg is the most flexible command-line choice if your build includes TTA support. First, check whether your FFmpeg installation can encode TTA, then run a conversion command such as ffmpeg -i input.opus output.tta. If your FFmpeg build does not support TTA encoding, use another tool that does, or convert through an intermediate WAV file and then encode to TTA with a dedicated encoder.

Option 2: foobar2000 on Windows can convert audio files through installed encoders. Install a TTA encoder component if needed, then open the Opus file, select it, and choose Convert → .... Pick TTA as the output format, set the destination folder, and start the conversion.

Option 3: fre:ac is another desktop converter that can decode Opus and, with the proper encoder support, export to TTA. Add the file, choose TTA as the target format, configure quality or compression settings if available, and run the conversion.

If you want a quick browser-based option, you can convert the file on 101convert.com for free without installing any software.

Quality, compatibility, and limitations

The most important limitation is that Opus is already lossy, so the resulting TTA file will be larger than the original Opus file but will not sound better than the source. It will only preserve the decoded audio from that point onward. For archival purposes, it is better to convert from the original uncompressed master, such as WAV, FLAC, or AIFF, rather than from Opus.

Compatibility is another consideration: TTA is less widely supported than FLAC, ALAC, or WAV. Some players and editors may not open TTA files without additional codecs or plugins. If broad compatibility matters, FLAC is often a safer lossless target. Also, metadata support can vary by tool, so check whether tags such as artist, album, and cover art are preserved during conversion.