Get recorded audio when paused

[cjambrosi]

Is it possible to pause and resume like WhatsApp Web? For example, when I click on the pause button, get the audio recorded so far?

If not, can someone give me an idea how to do it?

[damiaanh]

Yes this is possible using timeSlice to make data available on a certain interval. see this link for more info on this API.

1. Create a recorder the following options:

   recorderType: MediaStreamRecorder, // need to set this recorderType to pass the timeSlice option.
   timeSlice: 1000, // or another value that you want to make the recording available on.

   i.e.:

   var myRecorder = new RecordRTC(stream, {
           type: "audio",
           recorderType: MediaStreamRecorder,
           mimeType: "audio/webm;codecs=opus",
           timeSlice: 1000,
       });

2. Since a blob is now created for every second, we have to create one big blob when you pause the recorder:

myRecorder.pauseRecording();
var internal = myRecorder.getInternalRecorder();
if (internal && internal.getArrayOfBlobs) {
        var blob = new Blob(internal.getArrayOfBlobs(), {
            type: "audio",
        });
    }

3. if needed, create an object url for the blob:

   const myUrl = URL.createObjectURL(blob));

   Based on this great example on handling onDataAvailable with recordRTC.

[cjambrosi]

Excellent! Thank you very much @damiaanh. I'll try here