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Forums Adobe After Effects basic keyframe question

  • basic keyframe question

  • Simon Cawthorne

    April 13, 2005 at 9:44 am

    Hi All,

    is there an option with a keyframe that means it can behave like a switch off button:

    for example, can switch visibilty from 100 to 0 or from 0 to 100 – without gradually doing so.

    To achieve this, one could use two keyframes – first keyframe set to 100, then in the next frame, the keyframe set to 0, so creating an immediate switch, rather than a gradual change. This seems a bit convoluted – is there an option in AE that allows the user to set a single keyframe to turn a value right off. eg like a light switch rather than a light dimmer switch, as normally occurs between two keyframes over a period of time

    I realise this is basic, but any help would be appreciated –

    with thanks

  • Filip Vandueren

    April 13, 2005 at 10:09 am

    Hi there,

    look into “toggle hold keyframe”

    just set one keyframe to 0 the other to 100
    control-click/right-click on the first keyframe and you’ll see the option “toggle hold keyframe”

    the keyframe icon will change shape into a square, or a half square

    this will hold the value untill the next keyframe, so no interpolation occurs.

  • Simon Cawthorne

    April 13, 2005 at 10:30 am

    Hi Filip,

    thanks for this – Its been bugging me for ages, I’d been through the help files (believe it or not), but just couldn’t remember the phrase – I’d seen it in connection to a tutorial about making a series of lights switch on and off in sequence. I didn’t keep the tutorial either, as I was just reading around at the time.

    many thanks for this

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