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Bill Hunt
Bill Hunt
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GOP - Group of Pictures - What Does That Mean?

Dec 23, 2009 3:56 PM

Tags: #i-frame #gop #group_of_pictures #difference_frames

There are often discussions on trying to edit footage that is in a "delivery format." The topic of GOP comes up. This is an abstract concept, on its surface, especially if one came from a film background, where you could hold your footage up to a light and see each frame.

 

This ARTICLE covers it pretty well.

 

Here is a visual example:

 

GOP_Example_01.jpg

 

Hunt

6127 Views   3 Replies   Latest reply: Bill Hunt, Jan 11, 2013 11:03 AM
 
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  • mhdiver
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    1. mhdiver,
    Apr 8, 2010 3:59 PM   in reply to Bill Hunt
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    Very informative.  And very useful information. This is new territory for me - thanks for sharing.

     
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  • Bill Hunt
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    2. Bill Hunt,
    Apr 8, 2010 4:13 PM   in reply to mhdiver
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    You are most welcome. The GOP structure can be an issue, first when editing, if that is the native structure, and also with things like Chapter Point placement, in an authoring program. GOP works fine for compressing larger I-frame files (within parameters), but can really get in the way with frame-accurate editing.

     

    Good luck,

     

    Hunt

     
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  • Bill Hunt
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    3. Bill Hunt,
    Jan 11, 2013 11:03 AM   in reply to Bill Hunt
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    Also see this Wiki article on GOP Structure: http://en.wikipedia.org/wiki/Group_of_pictures

     

    Hunt

     
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