Audio Conversion
Convert MID to WMV — Free Online Converter
Convert Standard MIDI (.mid) to Windows Media Video (.wmv) online for free. Fast, secure audio conversion with no watermarks or registration.
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Convert Standard MIDI (.mid) to Windows Media Video (.wmv) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .mid 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 .wmv file when it's ready.
MID (Standard MIDI File) stores musical performance as instruction data — note triggers, velocities, timing, instrument assignments — in a binary format created in 1983 by the MIDI Manufacturers Association. MIDI files are extremely compact (10-100 KB) because they contain instructions, not audio. A synthesizer must render these instructions to produce audible sound.
WMV (Windows Media Video) is Microsoft's video container using VC-1 or Windows Media Video codecs within an ASF wrapper. Converting MID to WMV renders the MIDI through a software synthesizer and packages the audio in a WMV container. Since MIDI has no visual component, the output is an audio-only WMV file — a niche format for Windows-specific media systems requiring WMV input.
Some Windows-based media servers, digital signage systems, and legacy corporate infrastructure only accept WMV files. If rendered MIDI audio must be delivered through these channels, WMV is the required container. Windows Media Player and Windows Media Center handle WMV natively.
WMV files can also be consumed by legacy PowerPoint presentations and Windows-based kiosk systems that import only WMV for multimedia content. Converting MIDI renders to WMV bridges musical composition with Microsoft-specific enterprise media infrastructure.
FFmpeg decodes the MIDI file using its built-in MIDI decoder and synthesizer, rendering all channels to stereo PCM audio. The audio is encoded using wmav2 (Windows Media Audio v2) and packaged in an ASF/WMV container. Since MIDI has no video data, the WMV contains only an audio stream with ASF header objects (file properties, stream properties) and data packets. Some target systems may require a dummy video stream for the file to be recognized as valid WMV.
WMV is a container — audio quality depends on the WMA codec used inside. WMA at 192 kbps provides transparent quality for synthesized MIDI content. The SoundFont used during MIDI rendering determines the musical quality; the WMV container and WMA encoding preserve it adequately. For audio-only content, WMV is functionally equivalent to a standalone WMA file with additional container overhead.
| Device | MID | WMV |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
MID to WMV renders MIDI instructions into Microsoft's video container format. This conversion is strictly for Windows-centric systems that specifically require WMV input.
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| No |
| 特性 | MID | WMV |
|---|---|---|
| 全称 | Standard MIDI File | Windows Media Video |
| 扩展名 | .mid | .wmv |
| 最适合 | Musical performance data | Windows native |