没有url构造一个就行了`video.src = URL.createObjectURL(file)` [https://developer.mozilla.org/zh-CN/docs/Web/API/URL/createOb...](https://link.segmentfault.com/?enc=saraVWUDMeifQby8%2FMmAwA%3D%3D.AAsvzzztugxJUijfbm%2BQaG8%2BfMhN9yeQ2zFn6DRJ4UEddhyW6AR%2BxSPUlPqKllMYn4ddT3ClzT7GMmZTVPefouzUr%2FUHiV%2FixLxgr%2FpJsWA%3D)