Audio
给视频添加音频
用替换或混音模式，把视频与音乐、旁白或音效文件结合。
Waiting for media
Processing video...No file selected
Selected files stay on this device. File sizes shown before processing use browser metadata only, such as 1.00 MB units.
Your video is processed locally in your browser and is not uploaded to our servers. Processing starts only when you click the button - nothing happens until then.
使用方法 给视频添加音频
- 1.上传视频 - 选择基础视频。
- 2.上传音频 - 添加音乐、人声或音效的音频文件。
- 3.选择混音模式 - 替换原音频，或用音量控制混入两条音轨。
- 4.导出 - 渲染并下载 MP4 结果。
给视频添加音频 功能
Supported Add Audio to Video Formats
Privacy
Files are handled as local browser objects. BeYourTools does not upload video or audio contents, does not store filenames, and does not send media to third-party processing APIs.
Video Standards & Simple Playback Guide
Working with video requires balancing file size with clear playback. Using Add Audio to Video helps you prepare clean video clips that play smoothly on any phone, tablet, or computer. Whether you need smaller clips for email or fast-loading videos for your website, our tool gets the job done quickly.
Fast Browser Processing
All video slicing, frame capture, and encoding run directly inside your browser. Your computer or phone handles the work locally, so your large video files never upload over the web.
Everyday Compatibility
Your saved clips keep standard screen shapes, true colors, and clean sound. They open immediately in Apple QuickTime, Windows Media Player, Chrome, and Safari without extra plugins.
给视频添加音频 常见问题
音频比视频短会怎样？
输出按视频时长，视频结束自然收尾。短音频播到自己结尾即停止。
能保留原音频吗？
能。选择混音模式并调整视频与音频音量。
我的视频会被上传到服务器吗？
不会。本工具在您的浏览器本地处理文件，BeYourTools 不会上传、存储视频，也不会把媒体发给处理 API。
Does processing reduce the quality or resolution of my original video?
Trimming, cutting, and frame extraction keep your original video resolution and picture clarity. Our compressor tool lets you choose how much file size to shave off while keeping your picture sharp.
Are my personal videos uploaded to or viewable by anyone else?
No. All video editing happens right in your browser memory. Your files are never sent to our servers or saved anywhere online. Everything stays safe on your own device.