austinleroy / node-ebml Goto Github PK

import { createReadStream } from 'fs'
import { EbmlStreamDecoder, EbmlStreamEncoder, EbmlTagId } from 'ebml-stream'
import { pipeline as _p, Readable, Transform } from 'stream'
import { promisify } from 'util'

const pipeline = promisify(_p)

const ebmlDecoder = new EbmlStreamDecoder()
const ebmlEncoder = new EbmlStreamEncoder()
const hasher = createHash('sha1').setEncoding('hex')
await pipeline(createReadStream('media/' + file), ebmlDecoder, ebmlEncoder, hasher)

const hash = hasher.read()
console.log(hash)

// vs

const hasher = createHash('sha1').setEncoding('hex')
await pipeline(createReadStream('media/' + file), hasher)

const hash1 = hasher.read()
console.log(hash1)

import { createReadStream } from 'node:fs'
import { EbmlStreamDecoder } from 'ebml-stream'
const decoder = new EbmlStreamDecoder({
  bufferTagIds: [
    EbmlTagId.TimecodeScale,
    EbmlTagId.Tracks,
    EbmlTagId.BlockGroup,
    EbmlTagId.AttachedFile
  ]
})
decoder.on('data', console.log) // never ran

const stream = createReadStream('./video.mkv', { start: 2392064, end: 23920640 })
stream.on('data', data => decoder.write(data))
stream.pipe(subtitle).pipe(devnull())