[x264-devel] Re: ssd of previous frames

[Loren Merritt]

On Thu, 15 Feb 2007, Azadeh Rasouli wrote:

> would you please tell me while encoding a frame how I can access to the
> previous frames' distortions ("ssds").

They are not stored anywhere. Only the sum of all previous frames' ssds is 
stored, in h->stat.i_sqe_global.

> and what does "REF_COST(list, ref)" in analyse.c do exactly?

It's the cost, in lambda*bits, of coding the reference frame index using 
CAVLC.

--Loren Merritt

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