Convert MIDI to AVI — Free Online Converter
Convert Standard MIDI File (.midi) to Audio Video Interleave (.avi) online for free. Fast, secure audio conversion with no watermarks or registration....
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How to Convert
Upload your .midi 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 .avi file when it's ready.
About MIDI to AVI Conversion
MIDI (.midi) represents music in its most abstract digital form — as a time-ordered sequence of performance events that describe what to play rather than how it sounds. The format's channel architecture supports up to 16 simultaneous instrument parts, making it capable of representing full ensemble arrangements in a file smaller than most email signatures. The .midi extension is particularly common in academic and open-source music software ecosystems.
AVI (Audio Video Interleave) was introduced by Microsoft in 1992 as part of the Video for Windows framework. It uses a RIFF container structure to interleave audio and video streams. Converting MIDI to AVI renders the musical score into audio and optionally pairs it with a visual component — such as a scrolling notation display, waveform visualization, or static image — creating a complete multimedia file from pure performance data.
Why Convert MIDI to AVI?
Music education video creators need to pair MIDI-rendered audio with visual elements — animated piano rolls, scrolling sheet music, or chord diagrams — for tutorial content. AVI serves as an intermediate production format in Windows-based video editing pipelines where the rendered MIDI audio is combined with visual elements before final export to MP4 or WebM.
Retro computing enthusiasts and vintage software archivists may need AVI files for compatibility with legacy multimedia applications. Rendering MIDI to AVI with PCM audio ensures playback in Windows Media Player and legacy DirectShow-based applications going back to Windows 95, providing access to the widest possible range of historical Windows systems.
Common Use Cases
- Creating piano tutorial videos from MIDI with audio and scrolling notation in AVI format
- Producing music education content by pairing MIDI-rendered audio with chord diagram animations
- Rendering MIDI compositions as AVI for import into legacy Windows video editing software (Movie Maker, VirtualDub)
- Building audio-visual music theory demonstrations from MIDI for Windows-based classroom projection
- Preparing MIDI soundtrack renders as AVI for integration with retro computing and vintage software projects
How It Works
FFmpeg synthesizes the .midi file's event stream into stereo PCM audio using a SoundFont engine. For audio-only AVI output, the PCM or MP3-encoded stream is wrapped in a RIFF AVI container with a single audio stream header, format chunk (WAVEFORMATEX), and interleaved audio data chunks with an AVI 1.0 index (idx1) for seeking. When a background image is included, FFmpeg generates a single-frame video stream (typically MJPEG or uncompressed RGB) alongside the audio, producing a proper audio+video AVI file that satisfies applications requiring both stream types.
Quality & Performance
The AVI container itself imposes no quality constraints — it is a transparent wrapper. Audio quality is determined by the codec choice within AVI (PCM is lossless, MP3 is lossy at the specified bitrate) and, more fundamentally, by the SoundFont. For music education content where students need to hear individual notes clearly, a SoundFont with bright, well-articulated instrument patches is preferable to one optimized for atmospheric realism. The SoundFont should match the educational purpose: clean piano for keyboard tutorials, clear winds for woodwind exercises.
Device Compatibility
| Device | MIDI | AVI |
|---|---|---|
| Windows PC | Partial | Native |
| 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
- 1Add a static background image to create a proper video AVI rather than audio-only — many applications reject AVI without a video stream
- 2Use PCM audio for intermediate production files and MP3 only for final delivery where file size matters
- 3For music education videos, use a SoundFont with bright, clearly articulated instrument sounds rather than reverb-heavy cinematic ones
- 4Set the video to 1 fps with a single frame if using a static image — this minimizes file size while satisfying the video stream requirement
- 5Convert the final AVI to MP4 (H.264+AAC) before distributing online — AVI is an intermediate production format, not a modern delivery format
MIDI to AVI creates multimedia files from symbolic music data, serving Windows-based education content creation and legacy software compatibility needs. Add a visual component for proper video functionality.