mp4-metadata

mp4-parser

mp4-parser is a client side javascript library that will parse the creation time of a mp4 video.

Example

const mp4Metadata = require('mp4-metadata').default;
 
...
 
const mp4File = retrieveMp4File();
const creationTime = await mp4Metadata.getCreationTime(mp4File);
// 2016-06-03T20:51:02.000Z

Usage

npm install mp4-metadata

See it out on npm here

Installation - local development or to build it yourself.

Clone

Clone https://github.com/nadr0/mp4-metadata to your machine

Setup

We need to install all the dev dependencies for you to compile the source code into the distribution source.

npm install

Build

To build the source code to ES5 run the following.

npm run build

Usage

Building the repository should create distribution/index.js. This index.js file is all the source code of the library. Import it into whatever application you want.

Code Structure

All the source for the library is in source/index.js. It is written in modern ES6+.

If you want to use the ES6+ source feel free to grab that file directly as well. If you do not have support for ES6+ please use the build command above to generate an ES5 distribution source.

Features

I hope I update this library to parse all the metadata out of the moov atom inside an mp4 file. The only feature it supports now is getting the creation time of an mp4 file.

Documentation

The only exposed function right now is called getCreationTime

/**
 * Retrieves the creation time of the mp4 video
 * @param {(File | Blob)} file 
 * @param options configuration options for the parser
 * @param options.defaultChunkSize the default chunk size to parse per iteration in bytes
 * @param options.maxBytesRead the amount of bytes the parser will read before stopping. Make this the file size to read the entire file.
 * @return {(String | null)} a date time iso string of the creation time or null
 */
const getCreationTime = async (file, options={}) => 

• Quickly read the metadata from the back without searching the whole file

const mp4Metadata = require('mp4-metadata').default;
 
const mp4File = retrieveMp4File();
const creationTime = await mp4Metadata.getCreationTime(mp4File);
// 2016-06-03T20:51:02.000Z

• To read the entire file for the metadata

const mp4Metadata = require('mp4-metadata').default;
 
const mp4File = retrieveMp4File();
const options = {maxBytesRead: mp4File.size};
const creationTime = await mp4Metadata.getCreationTime(mp4File, options);
// 2016-06-03T20:51:02.000Z

Contributing

Feel free, make some issues make some PRs.

FAQ

• Why only this one function?
  • So far this was the only problem I needed to solve. I want to expand this further to parse out the rest of the metadata the same way.

Support

Reach out to me at one of the following places

• Website at kevinnadro.com

License

• MIT License