[x264-devel] out-of-range motion vectors

Panagiotis Issaris takis.issaris at uhasselt.be
Tue Jul 31 15:42:04 CEST 2007


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Hi,

CAdevel wrote:
> Thanx for your response,
> 
> The standard allows large motion vectors indeed (I recall a quarter window
> as max). However, motion estimation techniques generally limit their search
> range to 16 (or something close to that). Anyway, I encoded the movies with
> x264 using the option "--hex --merange 24" and "--esa --merange 16", where
> 'merange' sets the motion estimation search range. Thus, in principle I
> should not find any motion vector larger than 24 and 16 respectively. But I
> think I did, and that worries me.

Oh I see. Sorry, I hadn't read your e-mail thoroughly enough and
misunderstood your question. I am not an x264 developer though, so can't
help you with that...

With friendly regards,
Takis
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