Node.js的MP4流編碼和解碼器：mp4-stream

jopen 9年前發布 | 41K 次閱讀 多媒體處理 mp4-stream

Node.js的MP4流編碼和解碼器：mp4-stream。 

npm install mp4-stream

用法

var mp4 = require('mp4-stream')
var fs = require('fs')


var decode = mp4.decode()


fs.createReadStream('video.mp4')
  .pipe(decode)
  .on('atom', function (atom) {
    console.log('found atom (' + atom.type + ') at ' + atom.offset + ' (' + atom.length + ')')
    if (atom.container) {
      console.log('atom has child atoms (will be emitted next)')
    }
    if (atom.stream) {
      console.log('atom has stream data (consume stream to continue)')
      atom.stream.resume()
    }
  })</pre>


All atoms have a type thats a 4 char string with a type name. 


API 


var stream = mp4.decode() 


Create a new decoder. 


The decoder is a a writable stream you should write a mp4 file to. The stream will emitatomwhen a new atom is found. 


var stream = mp4.encode() 


Create a new encoder. 


Currently not implemented 






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