Convert M4R to AAC
Convert M4R files to AAC format online for free. No upload required, 100% private.
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Converting between two lossy formats (M4R → AAC) involves re-encoding, which may cause additional quality loss. For best results, convert from the original source file when possible.
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
About AAC
AAC
Advanced Audio Coding
AAC is a lossy audio codec designed as the successor to MP3. It provides better sound quality at similar bitrates and is widely used in streaming services.
Typical Use Cases
Pros
- • Better quality than MP3
- • Efficient compression
- • Wide platform support
Cons
- • Patent encumbered
- • Less universal than MP3
- • Variable encoder quality