[XviD-devel] 1.0 bug

[Andrew Voznytsa]

Thanks Christoph,

I just wanted to be sure that I did not miss some VOP type in standard ;)

Christoph Lampert wrote:

>On Wed, 31 Mar 2004, Andrew Voznytsa wrote:
>  
>
>>May I ask you what N-VOP is? I know I/P/B/S, but N is really something 
>>new for me.
>>If it is not so hard - point me to some resource where I can read about.
>>    
>>
>
>N-VOPs are "not coded VOPs" (I guess even "not coded P-VOPs").
>
>In VideoObjectPlane header there's a bit "vop_coded". If that is set to 
>'0', there is no new image data in this frame, and the VOPs bitstream ends 
>here. So the whole frame's bitstream is just a few bytes long. 
>
>It can be used if e.g. you do object shape coding and no part of the
>object is visible, or, to just tell the decoder "nothing changed".
>
>Btw. according to 3ivx, Quicktime doesn't handle them but crashes. 
>
>gruel
>
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>  
>
-- 

Best regards,
Andrew Voznytsa