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const { PassThrough } = require('stream')

const { promisify } = require('util')

const axios = require('axios')

const MultiStream = require('multistream')

const ffprobePath = require('@ffprobe-installer/ffprobe').path

const ffmpeg = require('fluent-ffmpeg')

ffmpeg.setFfprobePath(ffprobePath)

const ffprobeAsync = promisify(ffmpeg.ffprobe)

const cl = console.log

async function run () {

const url = 'https://storage.arc.io/arc/homepage_demo_files/vacations.mp4'

const res = await axios.get(url, { responseType: 'stream' })

const contentLength = Number(res.headers['content-length'])

const tee = new PassThrough()

const multiPass = new PassThrough()

const lenPass = new PassThrough()

const ffmpegPass = new PassThrough()

const multistream = new MultiStream([multiPass])

res.data.pipe(tee)

tee.pipe(multiPass)

tee.pipe(lenPass)

tee.pipe(ffmpegPass)

const p1 = ffprobeAsync(ffmpegPass).then(metadata => {

tee.unpipe(ffmpegPass)

// ffmpegPass.destroy()

return metadata

})

const p2 = new Promise(resolve => {

let len = 0

multistream.on('data', chunk => {

lenPass.on('data', chunk => {

len += chunk.length

})

multistream.on('end', () => {

lenPass.on('end', () => {

resolve(len)

})

const [res1, length] = await Promise.all([p1, p2])

console.log(contentLength, length)

if (contentLength !== length) {

cl('LENGTH MISMATCH')

} else {

cl('okay')

}

run()

Diferencias guardadas

Texto original

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const { PassThrough } = require('stream')
const { promisify } = require('util')

const axios = require('axios')
const MultiStream = require('multistream')
const ffprobePath = require('@ffprobe-installer/ffprobe').path
const ffmpeg = require('fluent-ffmpeg')

ffmpeg.setFfprobePath(ffprobePath)
const ffprobeAsync = promisify(ffmpeg.ffprobe)

const cl = console.log

async function run () {
    const url = 'https://storage.arc.io/arc/homepage_demo_files/vacations.mp4'
    const res = await axios.get(url, { responseType: 'stream' })
    const contentLength = Number(res.headers['content-length'])

const tee = new PassThrough()
    const multiPass = new PassThrough()
    const ffmpegPass = new PassThrough()

const multistream = new MultiStream([multiPass])

res.data.pipe(tee)
    tee.pipe(multiPass)
    tee.pipe(ffmpegPass)

const p1 = ffprobeAsync(ffmpegPass).then(metadata => {
        tee.unpipe(ffmpegPass)
        // ffmpegPass.destroy()
        return metadata
    })

const p2 = new Promise(resolve => {
        let len = 0
        multistream.on('data', chunk => {
            len += chunk.length
        })
        multistream.on('end', () => {
            resolve(len)
        })
    })

const [res1, length] = await Promise.all([p1, p2])

console.log(contentLength, length)
    if (contentLength !== length) {
        cl('LENGTH MISMATCH')
    } else {
        cl('okay')
    }
}

run()

Texto modificado

Abrir archivo

const { PassThrough } = require('stream')
const { promisify } = require('util')

const axios = require('axios')
const MultiStream = require('multistream')
const ffprobePath = require('@ffprobe-installer/ffprobe').path
const ffmpeg = require('fluent-ffmpeg')

ffmpeg.setFfprobePath(ffprobePath)
const ffprobeAsync = promisify(ffmpeg.ffprobe)

const cl = console.log

const tee = new PassThrough()
    const lenPass = new PassThrough()
    const ffmpegPass = new PassThrough()

res.data.pipe(tee)
    tee.pipe(lenPass)
    tee.pipe(ffmpegPass)

const p1 = ffprobeAsync(ffmpegPass).then(metadata => {
        tee.unpipe(ffmpegPass)
        // ffmpegPass.destroy()
        return metadata
    })

const p2 = new Promise(resolve => {
        let len = 0
        lenPass.on('data', chunk => {
            len += chunk.length
        })
        lenPass.on('end', () => {
            resolve(len)
        })
    })

const [res1, length] = await Promise.all([p1, p2])

console.log(contentLength, length)
    if (contentLength !== length) {
        cl('LENGTH MISMATCH')
    } else {
        cl('okay')
    }
}

run()