视频提取音频Extract Audio from Video
把视频里的声音保存成 MP3、M4A 或 WAV。Save the soundtrack of a video as MP3, M4A or WAV.
可用Available视频与音频Video & Audio
视频添加水印Add Watermark to Video
给视频叠加文字水印（四角或居中，支持中文），输出 MP4。Overlay a text watermark on a video (corner or centre, any language). Output is MP4.
理念：Idea: 原创视频，带上你的印记。Put your mark on your original video.
解决：Solves: 给视频加文字水印Adds a text watermark to a video
适合：For: 发原创视频的人Creators sharing their own videos
可用Available在浏览器中运行Runs in your browser
Loading tool…
在你的设备上本地处理。这里输入的内容不会上传。Processed locally on your device. Nothing you enter here is uploaded.
使用方法How to use
- 1选择一个视频并输入水印文字。Choose a video and type the watermark text.
- 2选位置、大小、颜色和透明度。Pick the position, size, colour and opacity.
- 3点「添加水印」，等进度走完后下载。Press Add watermark, wait for the progress to finish, then download.
说明Good to know
- 仅支持文字水印。视频在你的浏览器里重新编码，速度较慢，手机上尤其如此。处理时请保持页面打开并留在前台。Text only. The video is re-encoded in your browser, which is slow, especially on phones. Keep the page open and in the foreground.
- 上限 100 MB，建议不超过 3 分钟。第一次使用要下载约 10 MB 的处理组件（之后会缓存）。Limit 100 MB; up to about 3 minutes is recommended. The first use downloads a 10 MB processing engine (cached afterwards).
- 可见水印只能劝阻随手盗用，不是安全防护。A visible watermark deters casual reuse; it is not a security feature.
相关工具Related tools
音视频合并Merge Audio and Video
把一段音频配到视频上，替换原来的声音，输出 MP4。Put an audio track onto a video, replacing its original sound. Output is MP4.
可用Available视频与音频Video & Audio视频删除音轨Remove Audio from Video
不重新编码，直接去掉视频的声音，速度快、画质无损。Remove the sound from a video without re-encoding, so it is fast and lossless.
可用Available视频与音频Video & Audio视频压缩Video Compressor
缩小视频体积：可选画质和最大分辨率，输出 MP4（H.264）。Make a video smaller: choose quality and maximum resolution. Output is MP4 (H.264).
可用Available视频与音频Video & Audio