• Allen Sarkisyan - Lead engineer
• Paige Raynes - Product Development
• Dan Jacinto - Video Asset Quality Analyst

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the FrameRates object - the industry standard video frame rates are defined here, these properties are also available with the fps object after the video has been defined.

var FrameRates = {
	film: 24,
	NTSC : 29.97,
	NTSC_Film: 23.98,
	NTSC_HD : 59.94,
	PAL: 25,
	PAL_HD: 50,
	web: 30,
	high: 60
};

• frameRate - Returns the assigned frameRate
• video - Returns the HTMLVideoElement.

The methods available are get, listen, stopListen, and toTime.

• get() - Retrieves the current frame of the playing source.
• listen(format, tick) - The listen method requires the format parameter values include: (SMPTE, time, frame), the tick argument over rides the default interval set by the frame rate of the video.
• stopListen() - Clears the interval.
• toTime() - Returns the current time value in hh:mm:ss format.
• toSMPTE(frame) - Returns the current time with frame count in the SMPTE time code format hh:mm:ss:ff - Optional: Accepts a frame value for conversion to a SMPTE time code.
• toSeconds(SMPTE) - Returns the current time value in seconds - Optional: Accepts a SMPTE time code for conversion to seconds.
• toMilliseconds(SMPTE) - Returns the current time value in milliseconds - Optional: Accepts a SMPTE time code, or standard time code for conversion to milliseconds.
• toFrames(SMPTE) - Returns the frame count from a SMPTE time code.
• seekForward(frames) - Seeks forward the amount of frames declared by the frames parameter. Defaults to 1 frame.
• seekBackward(frames) - Seeks backward the amount of frames declared by the frames parameter. Defaults to 1 frame.
• seekTo(config) - Seeks to a certain SMPTE time code, standard time code, frame, second, or millisecond in the video. config example: { SMPTE: '00:01:12:22' }, { time: '00:01:12' }, { frame: 1750 }, { seconds: 72 }, { milliseconds: 72916 }

Step 1) Declaration - Initial declaration is done with a configuration object.

The configuration object takes these properties: id, and frameRate. it also provides a callback method.

• id defines the video element;
• frameRate defines the frame rate of the video source being played.
• callback defines a callback function that is called when a frame is captured.

var video = VideoFrame({
	id : 'videoPlayer',
	frameRate: FrameRates.film,
	callback : function(response) {
		console.log('callback response: ' + response);
	}
});

You may also initiate VideoFrame without a configuration object if you are certain you have a HTML5 video element on the page, and the video source frame rate is 24fps.

var video = VideoFrame();

Step 2) Usage - Retrieval of the current frame is done by calling the get method

• video.get() - To receive the current frame number, can't be simpler.
• video.toTime() - Retrieves the current time in hh:mm:ss format;
• video.listen(format, tick) - Polls the current video, default interval set by the frame rate Optional: override with tick argument - the format argument is required accepted values are: (SMPTE, time, frame)
• video.toSMPTE(frame) - Retrieves the current time with frame count in the SMPTE time code format hh:mm:ss:ff
• video.toSeconds(SMPTE) - Retrieves the current time in seconds - Optional: Accepts a SMPTE time code for conversion to seconds.
• video.toMilliseconds(SMPTE) - Retrieves the current time in milliseconds - Optional: Accepts a SMPTE time code, or standard time code for conversion to milliseconds.
• video.toFrames(SMPTE) - Returns the frame count from a SMPTE time code.
• video.seekForward(frames) - Seeks forward the amount of frames declared by the frames parameter. Defaults to 1 frame.
• video.seekBackward(frames) - Seeks backward the amount of frames declared by the frames parameter. Defaults to 1 frame.
• video.seekTo(config) - Seeks to a certain SMPTE time code, standard time code, frame, second, or millisecond in the video. config example: { SMPTE: '00:01:12:22' }, { time: '00:01:12' }, { frame: 1750 }, { seconds: 72 }, { milliseconds: 72916 }