getusermedia

来源： https://stackoverflow.com/questions/62538271/getusermedia-selfie-full-screen-on-mobile

来源： https://stackoverflow.com/questions/63542888/why-is-webrtc-dropping-audio

问题 I've created a webCam Stream with navigator.getUserMedia({ "video": true }, function(stream){ videoTag.src = window.URL.createObjectURL(stream); videoTag.play(); } Can I access the MediaStream object in stream in global scope?* (something like navigator.getAllMediaStreams[0] ) *edit: ...without adding logic to the getUserMedia function. My problem case is a qr-decoder-library, that gets the stream for me and I don't want to change the third party code 回答1: There is no list of active media

问题 I've created a webCam Stream with navigator.getUserMedia({ "video": true }, function(stream){ videoTag.src = window.URL.createObjectURL(stream); videoTag.play(); } Can I access the MediaStream object in stream in global scope?* (something like navigator.getAllMediaStreams[0] ) *edit: ...without adding logic to the getUserMedia function. My problem case is a qr-decoder-library, that gets the stream for me and I don't want to change the third party code 回答1: There is no list of active media

问题 In my sample ReactJs application I am using react-multimedia-capture - which uses navigator.mediaDevices.getUserMedia and the MediaRecorder API to record video. I am able to record video from Chrome, but in Safari I am unable to capture the video. The error is something like MediaRecorder is not defined. Could someone please help me out like: Does Safari supports basic video capturing? 回答1: Safari is currently not supporting MediaRecorder API by default, but you can enable them from Develop >

问题 In my sample ReactJs application I am using react-multimedia-capture - which uses navigator.mediaDevices.getUserMedia and the MediaRecorder API to record video. I am able to record video from Chrome, but in Safari I am unable to capture the video. The error is something like MediaRecorder is not defined. Could someone please help me out like: Does Safari supports basic video capturing? 回答1: Safari is currently not supporting MediaRecorder API by default, but you can enable them from Develop >

问题 With browser Web API, I'd like to set MediaDevices.getUserMedia constraints attributes, suitable to record audio speech (voice messages), e.g. setting these parameters: mono 16bit 16KHz Here my code: const mediaStreamConstraints = { audio: { channelCount: 1, sampleRate: 16000, sampleSize: 16, volume: 1 }, video: false } navigator.mediaDevices.getUserMedia(mediaStreamConstraints) .catch( err => serverlog(`ERROR mediaDevices.getUserMedia: ${err}`) ) .then( stream => { // audio recorded as Blob

问题 By adding MODIFY_AUDIO_SETTINGS permission to config.xml, my app will crash after run. <edit-config file="AndroidManifest.xml" mode="merge" target="/manifest/uses-permission" xmlns:android="http://schemas.android.com/apk/res/android"> <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/> </edit-config> Then run app: ionic cordova run android -- device Also i try for ionic android permission import { AndroidPermissions } from '@ionic-native/android-permissions/ngx'; this

问题 By adding MODIFY_AUDIO_SETTINGS permission to config.xml, my app will crash after run. <edit-config file="AndroidManifest.xml" mode="merge" target="/manifest/uses-permission" xmlns:android="http://schemas.android.com/apk/res/android"> <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/> </edit-config> Then run app: ionic cordova run android -- device Also i try for ionic android permission import { AndroidPermissions } from '@ionic-native/android-permissions/ngx'; this

问题 I'm recording my screen with gerUserMedia and get my video & audio stream. I'm then using WebRTC to send/receive this stream on another device. Is there any way I can then use this incoming webrtc stream as an input for ffmpeg by converting it somehow? Everything I'm working with is in javascript. Thanks in advance. 回答1: ffmpeg doesn't have WebRTC support (yet) but you have a couple other options that I know of. Pion WebRTC, here is an example of saving video to disk Amazon Kinesis has an