openVideo () {
				let timer = 4
				this.showprocess = true
				this.showcamera = true
				this.ctx = wx.createCameraContext();
				this.ctx.startRecord({
					success: (res) => {
						console.log(res,"开始拍摄")
						let clearTimer = setInterval(() => {
						  timer--;
						  if (timer < 0) {
						    this.closeVideo()
						    clearInterval(clearTimer)
						  }
						}, 1000) 
					},
					fail:(res) => {
						console.log(res,"错误回调")
					    wx.showToast({
					      title: '相机尚未初始化，请重新授权',
					      icon: 'none',
					      duration: 2000,
					    })    
					}
				})
			},