html

<u-cell title="录像" @click="saveVideo()" :isLink="true" value="开始录像">
					<view slot="value">
						{{videoPath?'重新录制':'开始录像'}}
					</view>
				</u-cell>

js

// 录制视频
			saveVideo() {
				let _this = this;
				uni.chooseVideo({
					count: 1,
					sourceType: ['camera'],
					success: res => {
						this.videoPath = res.tempFilePath;
					},
					fail: (err) => {
						uni.getSetting({
							success: (res) => {
								let authStatus = res.authSetting['scope.camera'];
								if (!authStatus) {
									uni.showModal({
										title: '授权失败',
										content: 'Hello uni-app需要从您的相机获取视频，请在设置界面打开相关权限',
										success: (res) => {
											if (res.confirm) {
												uni.openSetting()
											}
										}
									})
								}
							}
						})
					}
				});
			},