Forum Replies Created

  • Mark Trethewey

    November 3, 2009 at 9:27 am in reply to: Automatic Duck Luminance Shift on HD footage

    It sounds similar to the 601 to RGB colour space shift that happens out of avid systems – it did my head in a few years ago. This is where the super whites and super blacks are cliped, and the range between is stretched – which creates a crushed and oversaturated look, or inversly an undersaturated and milky look.

    Basically RGB = 0to255 range, and 601 is 15to235 range, so everything above and below is clipped.
    The way around this, if not in the export options, is to put a level effect in an adjustment layer, or on the footage layer, in after effects. Within the level effect, you would change the input amount to 15 and 235….i don’t have it infront of me, so it may be the output amount instead – its one of them anyway.

    Have a play, and see if this works.

    Mark Trethewey

    Senior Designer
    DMI Productions
    http://www.dmiproductions.co.uk
    marktrethewey.blogspot.com

  • Great, thanks for that Filip! This is definetely of help.

    I’m now trying to control it in the same fashion as the wheel tutorial. Obviously the position is now locked to the rotation, so I’ve pickwhiped the [516,576] x and y values to a null’s x and y position values at this same position to re-gain control of the ellipse’s position and I will attempt to get it all going again. I figure, however, that the circumference is not even like a circle, so, it will slip too fast then too slow during each rotation. Hmmm….. can of worms 🙂

    Thanks again.

    Mark Trethewey

    Senior Designer
    DMI Productions
    http://www.dmiproductions.co.uk
    marktrethewey.blogspot.com

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