fluent-bento4

node-fluent-bento4

This is a simple node module that provides a fluent api for the bento4 commands. At minimum, it provides a means to set the location of the binaries and execute a command.

Installation

npm i --save fluent-bento4

Usage

When the fluent-bento is required, as seen below, it returns a Bento4 object with the binPath not set, assuming a global install, or set to the value set in the environment variable BENTO4_BIN:

const bento4 = require('fluent-bento4')

To set the binPath of the executable binaries you can do it by using the constructor function as show below:

const bento4 = require('fluent-bento4')({bin:'/a/path/to/the/bin'})

You can set the binPath also by using the setBinPath method on the Bento4 object, as show below.

const newBento4 = bento4.setBinPath('/a/path/to/the/bin')

The thing to note here is that the setBinPath method returns a new Bento4 object and does not set the binPath on Bento4 object of the method itself. The state of the bento4 object is immutable.

Executing Commands

Every command has an exec(input, args=[]) method.

The input parameter can be a string or an array of strings that represent the file path of input video (e.g /videos/myvid.mp4 or ['/videos/myvid1.mp4', '/videos/myvid2.mp4']).

The args parameter is an array of command options for the specific command. For example, the mp4dump commands args parameter may look like this ['--format', 'json'].

const { binPath } = require('bento4-installer')
const bento4 = require('bento4')({bin:binPath})
const inputVideo = path.join(__dirname, '/videos/vid.mp4')
const args = ['--format', 'json']
 
const jsonDump = bento4.mp4dump.exec(inputVideo, args)