little-core-labs/npt-timecode

Atomic classes for working with Normal Play Time (NPT) time codes from RFC 2326.

npt-timecode

Atomic classes for working with Normal Play Time (NPT) time codes from RFC 2326.

Status

Installation

$ npm install npt-timecode

Usage

const { Timecode } = require('npt-timecode')
const timecode = Timecode.from('00:00:30.456-00:01:00.789')
console.log(timecode)
// Timecode (00:00:30.456-00:01:00.789) {
//   start: Time (00:00:30.456) { value: 30.456 },
//   stop: Time (00:01:00.789) { value: 60.789 }
// }

API

Timecode

A container for Normal Play Time (NPT) timecodes that support ranges.

timecode = Timecode.from(input)

Creates a Timecode instance from input.

Timecode.from({ start: 0, stop: 30.5 }) // in seconds
Timecode.from({ start: 'now' })
Timecode.from({ start: '00:05:32.5', stop: '00:06:00' })
Timecode.from('now-')
Timecode.from('00:05:32.5-00:06:00')
Timecode.from('00:05:00', '00:06:00')

timecode.start

A Time instance that represents the start value of a timecode range. If a range is not give, then it is the timecode value.

timecode.stop

A Time instance that represents the stop value of a timecode range. This time value may not be set if the timecode is not a range.

timecode.set(start[, stop])

Set the start and optional stop time values for this range.

timecode.set(30, 60) // 00:00:30-00:01:00

timecode.reset()

Reset the timecode state.

Time

A container for a NPT integer time value represented in seconds.

Time.NOW

A constant to represent "now" in a NPT scheme.

time = Time.from(input)

Creates a Time instance from input.

const time = Time.from(305.5) // 5 minutes, 5 seconds, and half a second
// or
const time = Time.from('5:5.5')
// or
const time = Time.from('00:05:5.5')
// or
const time = Time.from({ minutes: 5, seconds: 5.5 })

time = Time.now()

Creates a "now" Time instance.

const now =  Time.now()

time.value

The integer value of the Time instance.

time.isNow

true if the time value is the "now" constant.

time.isValid

true if the time value is valid. Meaning the time value is a valid finite integer.

time.totalHours

Computed total number of hours this Time instance represents.

time.totalMinutes

Computed total number of minutes this Time instance represents.

time.totalSeconds

Computed total number of seconds this Time instance represents.

time.totalMilliseconds

Computed total number of milliseconds this Time instance represents.

time.hours

Computed number of hours this Time instance represents.

time.minutes

Computed number of minutes this Time instance represents.

time.seconds

Computed number of seconds this Time instance represents.

time.milliseconds

Computed number of milliseconds this Time instance represents.

time.ms

An alias for time.milliseconds.

time.set(value)

Set the time value for this instance.

time.reset()

Resets the value of this Time instance to Number.NaN.

time.toString(format = 'hh:mm:ss')

Converts this Time instance to an optionally formatted string.

time.toString('hh:mm::ss') // default format, padded time
time.toString('hh') // padded hours
time.toString('mm') // padded minutes
time.toString('ss') // padded seconds
time.toString('H') // total hours, not padded
time.toString('M') // total minutes, not padded
time.toString('S') // total seconds, not padded

ms = parse(string)

Parse a NPT time string into milliseconds. This function does not parse range values.

License

MIT