var body = document.body; body.addEventListener("click", async function(){ var stream = await navigator.mediaDevices.getDisplayMedia({video: true}); var mime = MediaRecorder.isTypeSupported("video/webm; codecs=vp9") ?"video/webm; codecs=vp9" :"video/webm"; var mediaRecorder = new MediaRecorder(stream, {mimeType: mime}); //录制 var chunks = []; mediaRecorder.addEventListener('dataavailable', function(e) { chunks.push(e.data) }) //停止 mediaRecorder.addEventListener('stop', function(){ var blob = new Blob(chunks, {type: chunks[0].type}); var url = URL.createObjectURL(blob); var a = document.createElement('a'); a.href = url; a.download = 'video.webm'; a.click(); }) //手动启动 mediaRecorder.start() }); F12直接复制到console中执行 点击任意位置开始录屏
标签：function,mediaRecorder,webm,chunks,录屏,video,var,js,方法 From： https://www.cnblogs.com/xgb-web/p/16911206.html