File size: 1,854 Bytes
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const fs = require('fs')
const path = require('path')
const { spawn } = require('child_process')
function ffmpeg(buffer, args = [], ext = '', ext2 = '') {
return new Promise(async (resolve, reject) => {
try {
let tmp = path.join(__dirname, '../tmp', + new Date + '.' + ext)
let out = tmp + '.' + ext2
await fs.promises.writeFile(tmp, buffer)
spawn('ffmpeg', [
'-y',
'-i', tmp,
...args,
out
])
.on('error', reject)
.on('close', async (code) => {
try {
await fs.promises.unlink(tmp)
if (code !== 0) return reject(code)
resolve({ data: await fs.promises.readFile(out), filename: out })
// await fs.promises.unlink(out)
} catch (e) {
reject(e)
}
})
} catch (e) {
reject(e)
}
})
}
/**
* Convert Audio to Playable WhatsApp Audio
* @param {Buffer} buffer Audio Buffer
* @param {String} ext File Extension
*/
function toPTT(buffer, ext) {
return ffmpeg(buffer, [
'-vn',
'-c:a', 'libopus',
'-b:a', '128k',
'-vbr', 'on',
], ext, 'ogg')
}
/**
* Convert Audio to Playable WhatsApp PTT
* @param {Buffer} buffer Audio Buffer
* @param {String} ext File Extension
*/
function toAudio(buffer, ext) {
return ffmpeg(buffer, [
'-vn',
'-c:a', 'libopus',
'-b:a', '128k',
'-vbr', 'on',
'-compression_level', '10'
], ext, 'opus')
}
/**
* Convert Audio to Playable WhatsApp Video
* @param {Buffer} buffer Video Buffer
* @param {String} ext File Extension
*/
function toVideo(buffer, ext) {
return ffmpeg(buffer, [
'-c:v', 'libx264',
'-c:a', 'aac',
'-ab', '128k',
'-ar', '44100',
'-crf', '32',
'-preset', 'slow'
], ext, 'mp4')
}
module.exports = {
toAudio,
toPTT,
toVideo,
ffmpeg,
} |