Bulk MP1 to iPhone Audio Converter Online — Free HD Quality
Drag and drop your multiple MP1 files into this free online MP1 to iPhone Audio converter (.mp1 to .iphone), and click the Convert button to bulk convert them to iPhone Audio format in HD quality. Use the quality slider to fine-tune your iPhone Audio output, then download your converted files one by one or as a single ZIP — your original MP1 files are removed from our servers right after.
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PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
MP1 vs iPhone Audio — File Format Comparison
| Feature | MP1 | iPhone Audio |
|---|---|---|
| File Extension | .mp1 | .iphone |
| MIME Type | audio/mpeg | audio/mp4 |
| Compression Type | Lossy | Lossy |
| Metadata Support | No | Yes |
What Is MP1 Format?
MPEG-1 Audio Layer 1 — the earliest MPEG audio codec, used in Video CD and some legacy broadcast equipment; superseded by MP2 and MP3 and encountered only in archival digital video content.
- Compression: Lossy
- Tags & Metadata: Not supported
What Is iPhone Audio Format?
iPhone-optimised Audio — AAC/M4A audio encoded at 256 kbps, 44100 Hz stereo for maximum compatibility with iPhone, producing a .m4a file ready to sync via iTunes or AirDrop.
- Compression: Lossy
- Tags & Metadata: Supported
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