Convert OPUS to M4R
Convert OPUS files to M4R format online for free. No upload required, 100% private.
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Converting between two lossy formats (OPUS → M4R) involves re-encoding, which may cause additional quality loss. For best results, convert from the original source file when possible.
About OPUS
OPUS
Opus Interactive Audio Codec
Opus is a modern lossy audio codec optimized for both speech and music. It offers excellent quality at low bitrates and is ideal for real-time communication.
Typical Use Cases
Pros
- • Excellent low-bitrate quality
- • Low latency
- • Open source
- • Versatile
Cons
- • Limited device support
- • Newer format
- • Not all players support it
About M4R
M4R
iPhone Ringtone Format
M4R is the ringtone format used by Apple iPhones. It is essentially an M4A file with a different extension, limited to 40 seconds for ringtones.
Typical Use Cases
Pros
- • Native iPhone support
- • Easy to create from M4A
- • Good audio quality
Cons
- • iPhone only
- • 40 second limit
- • Requires iTunes for transfer