Recording a media element - Web APIs
starting media recording the startrecording() function handles starting the recording process: function startrecording(stream, lengthinms) { let recorder = new mediarecorder(stream); let data = []; recorder.ondataavailable = event => data.push(event.data); recorder.start(); log(recorder.state + " for " + (lengthinms/1000) + " seconds..."); let stopped = new promise((resolve, reject) => { recorder.onstop = resolve; re...
...corder.onerror = event => reject(event.name); }); let recorded = wait(lengthinms).then( () => recorder.state == "recording" && recorder.stop() ); return promise.all([ stopped, recorded ]) .then(() => data); } startrecording() takes two input parameters: a mediastream to record from and the length in milliseconds of the recording to make.
...once that resolves, the array data is returned by startrecording() to its caller.
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