This is a
playground to test code. It runs a full
Node.js environment and already has all of
npm’s 400,000 packages pre-installed, including
mp4-box-encoding with all
npm packages installed. Try it out:
This service is provided by RunKit and is not affiliated with npm, Inc or the package authors.
This module provides encoders and decoders with the abstract encoding interface.
The module exports the interface for a generic box, including all headers and children (for container boxes) Encodings for many leaf (non-container) boxes, without headers, is available keyed by the box type:
var box = require('mp4-box-encoding') var buffer = fs.readFileSync('myvideo.mp4') // decode any box including headers // decode the entire moov box and its children var moov = box.decode(buffer.slice(24, 236989)) var moov.mfhd.mtime = new Date() // Change the modification time // now this is an encoding of the modified moov box var moofBuffer = box.encode(moov) // decode the contents of just the stts box var stts = box.decode(buffer.slice(609, 625))
These encodings are factored out of mp4-stream.