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https://github.com/DeltaCircuit/react-media-recorder

react-media-recorder is a react component with render prop that can be used to record audio/video streams using MediaRecorder API.
https://github.com/DeltaCircuit/react-media-recorder

audio-recorder getdisplaymedia getusermedia media-recording mediarecorder react record-audio record-video recorder screen-recorder video-recorder video-recording voice-recording

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react-media-recorder is a react component with render prop that can be used to record audio/video streams using MediaRecorder API.

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# react-media-recorder :o2: :video_camera: :microphone: :computer:



`react-media-recorder` is a fully typed react component with render prop, or a react hook, that can be used to:



- Record audio/video

- Record screen



using [MediaRecorder API](https://developer.mozilla.org/en-US/docs/Web/API/MediaRecorder).



## Installation



```

npm i react-media-recorder

```



or



```

yarn add react-media-recorder

```



## Usage



```javascript

import { ReactMediaRecorder } from "react-media-recorder";



const RecordView = () => (

  


     (

        


          
{status}


          Start Recording

          Stop Recording

          

        


      )}

    />

  


);

```



Since `react-media-recording` uses render prop, you can define what to render in the view. Just don't forget to wire the `startRecording`, `stopRecording` and `mediaBlobUrl` to your component.



## Usage with react hooks



```javascript

import { useReactMediaRecorder } from "react-media-recorder";



const RecordView = () => {

  const { status, startRecording, stopRecording, mediaBlobUrl } =

    useReactMediaRecorder({ video: true });



  return (

    


      
{status}


      Start Recording

      Stop Recording

      

    


  );

};

```



The hook receives an object as argument with the same ReactMediaRecorder options / props (except the `render` function).



### Options / Props



#### audio



Can be either a boolean value or a [MediaTrackConstraints](https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints) object.



type: `boolean` or `object`  

default: `true`



#### blobPropertyBag



[From MDN](https://developer.mozilla.org/en-US/docs/Web/API/Blob/Blob):  

An optional `BlobPropertyBag` dictionary which may specify the following two attributes (for the `mediaBlob`):



- `type`, that represents the MIME type of the content of the array that will be put in the blob.

- `endings`, with a default value of "transparent", that specifies how strings containing the line ending character \n are to be written out. It is one of the two values: "native", meaning that line ending characters are changed to match host OS filesystem convention, or "transparent", meaning that endings are stored in the blob without change



type: `object`  

default:  

if `video` is enabled,



```

{

   type: "video/mp4"

}

```



if there's only `audio` is enabled,



```

{

  type: "audio/wav"

}

```



#### customMediaStream  



A media stream object itself (optional)



#### mediaRecorderOptions



An optional options object that will be passed to `MediaRecorder`. Please note that if you specify the MIME type via either `audio` or `video` prop _and_ through this `mediaRecorderOptions`, the `mediaRecorderOptions` have higher precedence.



type: `object`  

default: `{}`



#### onStart



A `function` that would get invoked when the MediaRecorder starts.



type: `function()`  

default: `() => null`



#### onStop



A `function` that would get invoked when the MediaRecorder stops. It'll provide the blob and the blob url as its params.



type: `function(blobUrl: string, blob: Blob)`  

default: `() => null`  



#### stopStreamsOnStop



Whether to stop all streams on stop. By default, its `true`



#### render



A `function` which accepts an object containing fields: `status`, `startRecording`, `stopRecording` and`mediaBlob`. This function would return a react element/component.



type: `function`  

default: `() => null`



#### screen



A `boolean` value. Lets you to record your current screen. Not all browsers would support this. Please [check here](https://caniuse.com/#search=getDisplayMedia) for the availability. Please note that at the moment, the MediaRecorder won't record two alike streams at a time, if you provide both `screen` and `video` prop, the **screen capturing will take precedence** than the video capturing. But, you can provide the `video` prop (_as the MediaTrackConstraints_) which will then utilized by screen capture (for example, `height`, `width` etc..)



#### video



Can be either a boolean value or a [MediaTrackConstraints](https://developer.mozilla.org/en-US/docs/Web/API/MediaTrackConstraints) object.



type: `boolean` or `object`  

default: `false`



#### askPermissionOnMount



A boolean value. If set to `true`, will ask media permission on mounting.



type: `boolean`

default: `false`



### Props available in the `render` function



#### error



A string enum. Possible values:



- `media_aborted`

- `permission_denied`

- `no_specified_media_found`

- `media_in_use`

- `invalid_media_constraints`

- `no_constraints`

- `recorder_error`



#### status



A string `enum`. Possible values:



- `media_aborted`

- `permission_denied`

- `no_specified_media_found`

- `media_in_use`

- `invalid_media_constraints`

- `no_constraints`

- `recorder_error`

- `idle`

- `acquiring_media`

- `recording`

- `stopping`

- `stopped`



#### startRecording



A `function`, which starts recording when invoked.



#### pauseRecording



A `function`, which pauses the recording when invoked.



#### resumeRecording



A `function`, which resumes the recording when invoked.



#### stopRecording



A `function`, which stops recording when invoked.



#### muteAudio



A `function`, which mutes the audio tracks when invoked.



#### unmuteAudio



A `function` which unmutes the audio tracks when invoked.



#### mediaBlobUrl



A `blob` url that can be wired to an ``, `` or an `` element.



#### clearBlobUrl



A `function` which clears the existing generated blob url (if any) and resets the workflow to its initial `idle` state.



#### isMuted



A boolean prop that tells whether the audio is muted or not.



#### previewStream



If you want to create a live-preview of the video to the user, you can use this _stream_ and attach it to a `` element. Please note that this is a **muted stream**. This is by design to get rid of internal microphone feedbacks on machines like laptop.



For example:



```tsx

const VideoPreview = ({ stream }: { stream: MediaStream | null }) => {

  const videoRef = useRef(null);



  useEffect(() => {

    if (videoRef.current && stream) {

      videoRef.current.srcObject = stream;

    }

  }, [stream]);

  if (!stream) {

    return null;

  }

  return ;

};



const App = () => (

   {

      return ;

    }}

  />

);

```



#### previewAudioStream



If you want access to the live audio stream for use in sound visualisations, you can use this _stream_ as your audio source and extract data from it using the [AudioContext](https://developer.mozilla.org/en-US/docs/Web/API/AudioContext) and [AnalyzerNode](https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode) features of the Web Audio API. Some javascript examples of how to do this can be found [here](https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Visualizations_with_Web_Audio_API).



## Contributing



Feel free to submit a PR if you found a bug (I might've missed many! :grinning:) or if you want to enhance it further.



Thanks!. Happy Recording!