Convert RMI to iPod Audio — Free Online Converter
Convert RIFF MIDI (.rmi) to iPod Audio (.ipod-audio) online for free. Fast, secure audio conversion with no watermarks or registration....
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How to Convert
Upload your .rmi file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .m4a file when it's ready.
About RMI to iPod Audio Conversion
RMI (RIFF MIDI) encapsulates MIDI performance data in Microsoft's RIFF container, designed for Windows Multimedia Extensions. iPod Audio is a device preset targeting Apple's iPod hardware — from the iPod Classic with its Wolfson/Cirrus Logic DAC to the iPod Touch with its A-series processor. iPod devices play AAC and MP3 natively through dedicated hardware decoders, with AAC being Apple's preferred codec since the iPod's inception.
Converting RMI to iPod Audio synthesizes the RIFF MIDI content into a rendered audio waveform, then encodes it as AAC in an M4A container optimized for iPod playback. This bridges vintage Windows MIDI with Apple's portable music player ecosystem.
Why Convert RMI to iPod Audio?
iPod devices cannot read RIFF MIDI files. The iPod's firmware supports AAC, MP3, ALAC, AIFF, and WAV — but not MIDI of any variant. Converting RMI to iPod-optimized AAC creates files that sync seamlessly through iTunes and play with hardware-accelerated decoding on every iPod model.
The iPod Classic's Wolfson WM8758 (early models) and Cirrus Logic CS42L55 (later models) DACs include dedicated AAC decode circuitry that maximizes battery life during audio playback. The iPod Touch uses the same A-series AAC hardware decoder found in iPhones. Targeting iPod Audio ensures the output leverages these dedicated hardware paths.
Common Use Cases
- Building an iPod music library from legacy Windows RIFF MIDI compositions
- Converting vintage MIDI ringtone collections for iPod Touch notification sounds
- Preparing MIDI game soundtracks for playback on iPod-based gaming setups
- Migrating Windows-era MIDI music archives to iPod-compatible AAC format
- Rendering RIFF MIDI compositions for offline listening on iPod devices during travel
How It Works
FFmpeg extracts the MIDI stream from the RIFF container, synthesizes audio via FluidSynth with a General MIDI SoundFont, and encodes to AAC-LC at 256 kbps in M4A. The encoding targets the AAC-LC profile at 44.1 kHz stereo — the specification supported by every iPod model. The M4A container includes iTunes-compatible metadata atoms for proper library display when synced through iTunes.
Quality & Performance
AAC-LC at 256 kbps is the iTunes Store standard and delivers transparent quality for synthesized MIDI content. iPod hardware decoders reproduce AAC with high fidelity — the iPod Classic's Wolfson DAC is particularly well-regarded for its clean audio output. SoundFont quality remains the primary variable; AAC encoding preserves the synthesis result faithfully.
Device Compatibility
| Device | RMI | iPod Audio |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No | No |
Recommended Settings by Platform
Spotify
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Apple Music
Resolution: N/A
Bitrate: 256 kbps
AAC format required
SoundCloud
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Podcast
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
Tips for Best Results
- 1Use 256 kbps AAC-LC for the optimal quality-to-size ratio on all iPod models
- 2Embed iTunes-compatible metadata and album art for proper display on iPod screens
- 3Encode at 44.1 kHz stereo — the standard specification supported by every iPod generation
- 4Sync through iTunes for automatic library organization and playlist integration
- 5Use a high-quality SoundFont for the MIDI synthesis step since iPod's clean DAC output reveals synthesis quality
RMI to iPod Audio renders Windows RIFF MIDI into AAC optimized for Apple's portable music players. Hardware decode acceleration ensures maximum battery life on every iPod generation.