CODEWITHSUNDEEP
javascriptnode.jsfs
Vaibhav Mule
Vaibhav Mule

Reputation: 5136

How to read first 1 MB of from 14 GB file in NodeJS

I want to read first 1 MB from 14 GB of video file.

What I have tried so far?

fs.open('/tmp/foo.txt', 'r', function(status, fd) {

if (status) {
  // debug(status.message)
  return
}

var buffer = new Buffer(1024 * 1024);

fs.read(fd, buffer, 0, 1024 * 1024, 0, function(err, num, buffer) {
    console.log(num, buffer)
})

I want to some portion of file so that I can extract metadata.

Upvotes: 0

Views: 871

Answers (1)

josh3736
josh3736

Reputation: 145172

Create a read stream with a start and end.

var stream = fs.createReadStream('file', {
    encoding: null,
    start: 0,
    end: 1024 * 1024
});

Upvotes: 1

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