audioBufferToDataUrl()

tsx
import {audioBufferToDataUrl} from'@remotion/media-utils';
conststr=audioBufferToDataUrl(audioBuffer);

tsx
import {audioBufferToDataUrl} from'@remotion/media-utils';
import {useCallback, useEffect, useState} from'react';
import {Html5Audio, cancelRender, continueRender, delayRender, interpolate, useVideoConfig} from'remotion';
constC4_FREQUENCY=261.63;
constsampleRate=44100;
exportconstOfflineAudioBufferExample:React.FC= () => {
const [handle] =useState(() =>delayRender());
const [audioBuffer, setAudioBuffer] =useState<string|null>(null);
const {fps, durationInFrames} =useVideoConfig();
constlengthInSeconds= durationInFrames / fps;
constrenderAudio=useCallback(async () => {
constofflineContext=newOfflineAudioContext({
 numberOfChannels: 2,
 length: sampleRate * lengthInSeconds,
 sampleRate,
 });
constoscillatorNode= offlineContext.createOscillator();
constgainNode= offlineContext.createGain();
 oscillatorNode.connect(gainNode);
 gainNode.connect(offlineContext.destination);
 gainNode.gain.setValueAtTime(0.5, offlineContext.currentTime);
 oscillatorNode.type ='sine';
 oscillatorNode.frequency.value =C4_FREQUENCY;
const {currentTime} = offlineContext;
 oscillatorNode.start(currentTime);
 oscillatorNode.stop(currentTime + lengthInSeconds);
constbuffer=await offlineContext.startRendering();
setAudioBuffer(audioBufferToDataUrl(buffer));
continueRender(handle);
 }, [handle, lengthInSeconds]);
useEffect(() => {
renderAudio().catch((err) =>cancelRender(err));
 }, [renderAudio]);
return audioBuffer ? (
 <Html5Audio
src={audioBuffer}
trimAfter={100}
volume={(f) =>
interpolate(f, [0, 50, 100], [0, 1, 0], {
 extrapolateLeft: 'clamp',
 extrapolateRight: 'clamp',
 })
 }
 />
 ) :null;
};