Question
Answer and Explanation
Creating an audio recorder in Vue 3 that captures audio in Ogg Opus format involves several steps. Here's a comprehensive guide:
1. Install Necessary Dependencies:
- You'll need the `recordrtc` library for handling the recording. Install it using npm or yarn:
npm install recordrtc
2. Create a Vue Component:
- Make a Vue component to manage the recording logic. Below is an example component:
<template>
<button @click="startRecording" :disabled="isRecording">Start Recording</button>
<button @click="stopRecording" :disabled="!isRecording">Stop Recording</button>
<audio controls :src="audioURL" v-if="audioURL"></audio>
</template>
<script setup>
import { ref, onUnmounted } from 'vue';
import RecordRTC from 'recordrtc';
const isRecording = ref(false);
const audioURL = ref('');
let recorder = null;
const startRecording = async () => {
isRecording.value = true;
const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
recorder = new RecordRTC(stream, {
type: 'audio',
mimeType: 'audio/ogg;codecs=opus',
});
recorder.startRecording();
};
const stopRecording = () => {
isRecording.value = false;
if (recorder) {
recorder.stopRecording(() => {
let blob = recorder.getBlob();
audioURL.value = URL.createObjectURL(blob);
});
recorder.stream.getTracks().forEach(track => track.stop());
}
};
onUnmounted(() => {
if (recorder) {
recorder.destroy();
}
});
</script>
3. Explanation:
- The component imports `ref`, `onUnmounted` from Vue and `RecordRTC`.
- `isRecording` tracks the recording state.
- `audioURL` stores the recorded audio's URL for playback.
- `startRecording` uses `navigator.mediaDevices.getUserMedia` to access the microphone and initiates `RecordRTC` to begin recording in Ogg Opus format.
- `stopRecording` stops the recorder and creates a blob from the recorded data, which generates a playable audio URL.
- `onUnmounted` clears up the recorder to prevent memory leaks.
4. Important Considerations:
- Browser Support: Ensure Ogg Opus encoding is supported in the targeted browsers.
- Permissions: Handle permission requests gracefully and inform the user if microphone access is denied.
- Error Handling: Implement appropriate error handling for recording failures.
5. Usage:
- You can now use this component in your Vue application. When the user interacts with the buttons, they can record and play back audio.
This solution provides a basic audio recorder in Vue 3 using `RecordRTC` to save the recording in Ogg Opus format. You can further extend this component by adding features like time limits, progress indicators, or uploading capabilities.