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Actionscript 3.0 - LEVEL INTERMEDIATE
AS3 Timecode Conversion Class	Last edited 26TH NOV, 2009
This is a Flash Actionscript 3 TimeCode Converter Class. The idea is you can pass in a number of elapsed frames, with an optional time offset and the Timecode is generated from that. Also it works in reverse - will convert Timecode to frames. It currently is set by default for a PAL framerate (25FPS) but the class can easily be converted to work at different frame rates. This is a very useful tool if working with video and broadcast applications. Enjoy!

package senior {
    
    public class timecode {
        
        var $timecode:String;
        var $frames:Number;
        var $seconds:Number;
        var $mins:Number;
        var $hours:Number;
        
        static var $delim_CONSTANT:String;
        static var $fps_CONSTANT:Number;
        static var $USELEADINGHOURZERO:Boolean;
        
        public function timecode () {
            init();
        }
        
        public function init() : void {
            //
            $delim_CONSTANT = ":";
            $fps_CONSTANT     = 25;
            $USELEADINGHOURZERO = false;
        }
        
        
        public function convertFPS ($timecode:String) : Number {
            
            var $split:Array = $timecode.split($delim_CONSTANT);
            var $splitlength:Number = $split.length - 1;
            // h // m // s // f
            
            $frames = Number($split[$splitlength]);
            
            if ($splitlength-- >= 0) $seconds = Number($split[$splitlength]);
            
            $frames += $seconds * $fps_CONSTANT;
            
            if ($splitlength-- >= 0) $mins = Number($split[$splitlength]);
            
            $frames += $mins * 60 * $fps_CONSTANT;
            
            if ($splitlength-- >= 0) $hours = Number($split[$splitlength]);
            
            $frames += $hours * 3600 * $fps_CONSTANT;
            
            //trace("made frames " + $frames);
            
            return $frames;
        }
        
        public function convertTIMECODE ($frames:Number, $offset:Number) : String {
            
            $frames += $offset;
            
            $hours = Math.floor($frames / ($fps_CONSTANT * 60 * 60));
            $frames = $frames - ($hours * ($fps_CONSTANT * 60 * 60));
            
            //trace("hours " + $hours + " remain " + $frames);
            
            $mins = Math.floor($frames / ($fps_CONSTANT * 60));
            $frames = $frames - ($mins * ($fps_CONSTANT * 60));
            
            //trace("mins " + $mins + " remain " + $frames);
            
            $seconds = Math.floor($frames / 25);
            $frames = $frames - ($seconds * 25);
            
            //trace("seconds " + $seconds + " remain " + $frames);
            
            var $outputhours:String = String($hours);
            if ($hours < 10 && $USELEADINGHOURZERO) $outputhours = "0" + $hours;
            var $outputmins:String = String($mins);
            if ($mins < 10) $outputmins     = "0" + $mins;
            var $outputsecs:String = String($seconds);
            if ($seconds < 10) $outputsecs     = "0" + $seconds;
            var $outputframes:String = String($frames);
            if ($frames < 10) $outputframes = "0" + $frames;
            
            $timecode = $outputhours + $delim_CONSTANT + $outputmins + $delim_CONSTANT + $outputsecs + $delim_CONSTANT + $outputframes;
            
            return $timecode;
            
        }
        
    }
    
    
}