Video Tools
Add Music to Video
Add background music or voiceover to any video with volume mixing controls.
Your files stay on your device - processed locally via WebAssembly, never uploaded
Drop a video file or click to upload
MP4, WebM, MOV, AVI, MKV
Drop an audio file or click to upload
MP3, WAV, OGG, AAC, M4A, FLAC
Your videos are processed locally in your browser. Nothing is uploaded to any server.
Embed this tool on your website
Copy this code to add the Add Music to Video to your site for free. It runs entirely in your visitors' browsers - no API key, no usage limits.
<iframe src="https://optipix.art/embed/add-music-to-video" width="100%" height="600" style="border:1px solid #e4e4e7;border-radius:8px;" title="Add Music to Video by OptiPix" loading="lazy"></iframe> <p style="font-size:12px">Free tool by <a href="https://optipix.art/add-music-to-video">OptiPix Add Music to Video</a></p>
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About Add Music to Video
Last updated: May 2026
OptiPix 为视频添加音乐，可让您将背景音乐、画外音或任何音频叠加到视频上。上传视频和音频文件，然后控制原始视频音频和新音乐的音量。选择完全替换原始音频或将它们混合在一起。如果音乐比视频短，则循环播放音乐。使用 FFmpeg.wasm amix 过滤器。
How It Works
使用 FFmpeg.wasm amix 过滤器进行混合，或使用 -map 进行替换。通过 volume 过滤器调整音量。
Use Cases
- •为 vlog 添加背景音乐
- •为屏幕录制添加画外音
- •替换演示文稿中的音频
- •为幻灯片添加音乐
- •创建带有自定义配乐的视频
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