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Thread: What is the difference between linear and non-linear Audio / Video???

  1. #1
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    What is the difference between linear and non-linear Audio / Video???

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    What is the difference between linear and non-linear Audio / Video???
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    Kilroy Was Here!

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    I started to type up a discourse on this one....but then got sick of typing and found this page:

    http://www.cybercollege.com/tvp056.htm


    ENJOY!!!

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    linear editing is "destructive". In other words, you have to work in a timeline. any changes in that timeline change the video/audio as a whole. (outboard sequencer)

    non-linear editing is "non destructive". In other words, you can make changes anywhere at any time and have the same result in the end. (DAW)

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    I'll try to write something brief for those that don't want to go off to that other website.

    Linear editing usually refers to tape-based systems where the data (audio/video) occurs in sequence from beginning to end. For example, to insert a section of audio in a linear editing system you would have to shuttle the tape to the right location, cut the tape, and insert the extra tape of audio you want to add in between the two cut pieces.

    Non-linear editing typically refers to computer-based systems where data can be found instantly without regard to the sequence it was recorded in. Using a parallel example, you can accomplish the same kind of edit on a digital system by jumping immediately to the appropriate place (assuming you know where that is), cutting and pasting audio data wherever you want to, overwriting, inserting between, or blending with whatever's there already, etc. Usually this is all saved internally by pointers to audio data and the edits are applied non-destructively, that is, the original data is still there and you can undo anything.

    Whew, it is hard to explain in just a few sentences. I think you had the right instinct, pratt...

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    Then there's also "offline" and "online" editing...

    There's drop/non-drop timecode...

    And pull-up/pull-down...

    The world of editing for picture is filled with contradictions. At times I think it's designed that way expressly to keep the club small.

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