Audio Conversion
Convert M4A to MID Online — Free
Fast, free M4A to MID converter. No registration required.
或从以下导入
200万+文件已转换
数千用户的信赖之选
安全传输
HTTPS 加密上传
隐私优先
文件处理后自动删除
无需注册
即刻开始转换
随处可用
任何浏览器，任何设备
如何转换
1
Upload your .m4a file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .mid file when it's ready.
什么是 M4A？
M4A is an audio-only MPEG-4 container, commonly using AAC encoding. It provides better quality than MP3 at similar file sizes.
格式详情
- 全称
- MPEG-4 Audio
- 扩展名
- .m4a
主要特点
- Better than MP3
- Apple ecosystem
- AAC encoding
- Metadata support
什么是 MID？
MID is the short extension variant of the Standard MIDI File format. It contains musical performance data such as notes, timing, and instrument assignments rather than audio waveforms.
格式详情
- 全称
- Standard MIDI File
- 扩展名
- .mid
主要特点
- Musical performance data
- Tiny file sizes
- Instrument agnostic
- Wide support
M4A 与 MID 对比
| 特性 | M4A | MID |
|---|---|---|
| 全称 | MPEG-4 Audio | Standard MIDI File |
| 扩展名 | .m4a | .mid |
| 最适合 | Better than MP3 | Musical performance data |
常见问题
Converting between lossless formats preserves perfect quality. When converting to lossy formats, our optimized encoding minimizes any audible difference. You can adjust bitrate to control quality vs. file size.
We preserve ID3 tags, album art, and metadata when both M4A and MID support them. Some metadata may not transfer between incompatible formats.
Pro users can batch convert multiple audio files simultaneously. Free users convert one file at a time with up to 5 free conversions per day.
We support all standard sample rates from 8kHz (voice) up to 192kHz (studio quality). The default preserves your source file's sample rate.
Yes. Our audio converter handles music, podcasts, voice memos, and audiobook files. For podcasts, we recommend MP3 at 128-192kbps for the best balance of quality and file size.