On Tue, 28 Dec 2004, Anne Wilson wrote:

> lighting conditions, to say the least.  I have just seen the message
> GOP min length too small to permit scene change on GOP boundary 24"...

        Completely harmless and can be safely ignored.

> saying that with those light levels it can't be sure whether there is a scene 
> change or not at that point.  Am I correct?
        

        Actually it means that the encoder wanted to make a scene change (i.e.
        it knew here was a scene change) by closing a GOP and starting a new 
        one.  It can only do that if the GOP that is going to be ended has
        at least '-g' frames in it (default of 9).

        Nothing at all to worry about.  You can allow the encoder to use
        shorter GOPs if you like with '-g' ('-G' sets the maximum).

        Steven Schultz



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