LIHA Tools

AMR to Opus Converter

Convert AMR audio to Opus in a browser-only batch. Files and results are never uploaded.

Files stay in this browser tab and are never uploaded. Up to 250.0 MiB per file and 50 files.

Common output settings

Advanced settings

The batch workspace is ready. Audio encoding becomes available after the verified browser engine is loaded.

How AMR to Opus conversion works

AMR decode → normalized audio stream → Opus encode

Reading AMR

AMR input is optimized for narrowband or wideband speech and may have limited metadata.

Creating Opus

Opus output is efficient for speech and music and is stored in an Ogg container.