在火狐浏览器中,可以通过使用getUserMediaAPI来获取mediaStreamTrack的实际facingMode。 facingMode是一个用于指定摄像头或音频输入设备的方向或模式的属性。它可以有以下几种取值: "user":表示使用前置摄像头或麦克风。 "environment":表示使用后置摄像头或麦克风。 "left":表示使用左侧摄像头或麦克风。 "right":表示...
environment,此选项通常用于相机或设备背对用户时,例如安全摄像头或监控系统。 left,此选项通常用于相机或设备位于用户左侧时,例如人像模式相机。 right,此选项通常用于相机或设备位于用户右侧时,例如横向模式相机。 `facingMode`参数是涉及人脸检测和追踪的计算机视觉应用中的重要考虑因素。通过指定人脸的方向,它有助于提高...
👍1 I won't be able to input much about it since we built a custom component to useImageCapture. We usedgetUserMediain 3 different pages. The first page hadfacingModeuser, the second page hadfacingMode environmentand would not load theMediaTrack. If we started the first page withfacingMode...
environment available device if no `deviceId` is defined. */ public getUserMediaConstraints(deviceId: string): MediaStreamConstraints { const video = typeof deviceId === 'undefined' ? { facingMode: { exact: 'environment' } } : { deviceId: { exact: deviceId } }; const constraints: ...
1 I want to get the video stream of my rear camera in an Ionic Application. For this, I use getUserMedia that work correctly for the front camera. When I change the facing mode to 'environment' I got this error : Unknown constraint named facingMode rejected ConstraintNotSatisfiedError ...
即指的是把采集阶段封包好的内容传输到服务器的过程。其实就是将现场的视频信号传到网络的过程。
facingMode = facingMode === "user" ? "environment" : "user"; return; } await markDeviceIdTested(deviceId); deviceId = (await getNextDeviceId(deviceId)) || ""; if (!deviceId) { d.canSwitch = false; } }; ?4.2 抽离拉流配置方法 ...
{ var resultContainer = document.getElementById('qr-reader-results'); var lastResult, countResults = 0; var html5QrcodeScanner = new Html5QrcodeScanner( "qr-reader", { facingMode: { exact: "environment"}}, { fps: 10, qrbox: 250 }); function onScanSuccess(qrCodeMessage) { //do ...