[x264-devel] Re: patch: switch to select ME method & range

[Loren Merritt]

On Thu, 17 Mar 2005, Tuukka Toivonen wrote:

> -        for( i_iter = 0; i_iter < 8; i_iter++ )
> +        for( i_iter = 0; i_iter < i_me_range/2; i_iter++ )

The reason it was limited to 8 was so that I didn't have to check mv 
against h->mb.mv_{min,max} within the loop: the starting point for the 
search is guaranteed to be more than 16 pixels from the edge of the padded 
frame. So, either calculate the limit based on distance to the edge, or 
check against the min/maax mvs within the loop, or restrict mvp to within 
the padded frame.

Also, how about an adaptive ESA radius based on the amount of motion in 
neighboring blocks or previous frames? Or an initial search using the 
lowres frames?

--Loren Merritt

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