I am trying to send audio over web-sockets to node server where I want to store it in local file system. I am able to append the data received in a file, but it is not playable.
Most of the solution I found are for client side which use AudioContext.decodeAudiodata().
client
localAudioStreamRecorder = getMediaStreamRecording(
localAudioStream,
'audio/webm;codecs=opus',
(data: ArrayBuffer) => {
handleSendRecordingChunk(socket, {
...getIdentityPayload({ sessionId, userId, role }),
data,
streamType: 'audio',
})
}
)
server
const audioStreamPass = fs.createWriteStream(audioFilePath, { flags: 'a' });
const newData = async (socket, eventData, cb) => {
const { sessionId } = eventData.body;
if (eventData.body.streamType === 'audio') {
// Need help here
audioStreamPass.write(Buffer.from(new Uint8Array(eventData.body.data)));
}
};
I just want to know, how can I decode this data to something which is playable. Thanks.
Try this on server:
const { Readable } = require('stream');
const audioStreamPass = fs.createWriteStream(audioFilePath, { flags: 'a' });
const newData = async (socket, eventData, cb) => {
const { sessionId } = eventData.body;
if (eventData.body.streamType === 'audio') {
// Create the readable stream from buffer
const readableStream = Readable.from(buffer);
//Pipe the stream to the writeable
readableStream.pipe(audioStreamPass)
};