Video Conversion
Convert MP4 to Opus Online — Free
Fast, free MP4 to Opus converter. No registration required.
或从以下导入
200万+文件已转换
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安全传输
HTTPS 加密上传
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文件处理后自动删除
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即刻开始转换
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任何浏览器，任何设备
如何转换
1
Upload your .mp4 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 .opus file when it's ready.
什么是 MP4？
MP4 is the most widely used video container format. It stores video, audio, subtitles, and metadata. Compatible with virtually every device and platform, from smartphones to smart TVs.
格式详情
- 全称
- MPEG-4 Part 14
- 扩展名
- .mp4
主要特点
- Universal compatibility
- Streaming support
- Small file sizes
- Hardware-accelerated playback
什么是 Opus？
Opus is a modern audio codec designed for interactive speech and audio transmission. It provides excellent quality at low bitrates and is widely used in VoIP and streaming.
格式详情
- 全称
- Opus Audio Codec
- 扩展名
- .opus
主要特点
- Low latency
- Excellent compression
- Voice optimized
- Open source
MP4 与 Opus 对比
| 特性 | MP4 | Opus |
|---|---|---|
| 全称 | MPEG-4 Part 14 | Opus Audio Codec |
| 扩展名 | .mp4 | .opus |
| 最适合 | Universal compatibility | Low latency |
常见问题
The audio track is extracted from your MP4 file without re-encoding when possible, preserving the original quality. If format conversion is needed, we use optimized settings to minimize any loss.
Free users can process files up to 100MB. Pro users can extract audio from videos up to 2GB with priority processing.
Audio extraction is fast — most files complete in under 30 seconds. Our servers handle the processing, so it works on any device.
Yes. You can adjust bitrate, sample rate, and channels before conversion. Default settings preserve the original audio quality from your MP4 file.
Yes. Our converter runs entirely in your browser — no app needed. Upload your video, extract audio, and download on any device.