[x264-devel] Re: x264: svn commit r240 (pengvado)

[Stephen Henry]

Your correct, constrained intra prediction is limited to INTER blocks; I
also thought however (for what reason I don't know) that this also
applied to prediction across slice boundaries.

I was also not aware that INTRA prediction could not be performed across
slice boundaries. I could not find anything to this effect in the
standard. Is this something that is enforced by x264 specifically or the
standard?

Stephen 

-----Original Message-----
From: x264-devel-bounce at videolan.org
[mailto:x264-devel-bounce at videolan.org] On Behalf Of Mathieu Monnier
Sent: 31 May 2005 10:54
To: x264-devel at videolan.org
Subject: [x264-devel] Re: x264: svn commit r240 (pengvado)

Hi,

 > How does the encoder enforce INTRA prediction across slice boundaries

Such prediction isn't allowed. Intra prediction can only use macroblocks

from the same slice as predictors ( so concerning intra prediction, the 
slice behaves like a frame ).

> It looks to me that 'constrained intra prediction' isn't used

 Constrained intra prediction is something different : if enabled, intra

prediction can only be made from intra macroblock.

Regards,

Mathieu

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