[x264-devel] Max number of motion vectors

[Li, Stephen]

Thanks for your response. Removing p4x4 fixes the problem. Is it a known issue with x264? What is the effect of removing p4x4?

Thanks
Steve

-----Original Message-----
From: x264-devel [mailto:x264-devel-bounces at videolan.org] On Behalf Of BugMaster
Sent: May-12-16 1:26 PM
To: Mailing list for x264 developers
Subject: Re: [x264-devel] Max number of motion vectors

On Thu, 12 May 2016 16:22:03 +0000, Li, Stephen wrote:
>
> Hi,
>
> I am getting an error from my H264 analyzer. Its saying:
>  
> The maximum number of motion vectors per two consecutive macroblocks 
> (at this level) is 16. The macroblock starting at position 0x3a5, bit 
> 3 contains 9 motions vectors, while the previous macroblock contained 8.
>
> Has anyone seen this issue before? I am wondering what parameters 
> would affect the number of motion vectors used. Any help is appreciated.
>
> Thanks
>  
> Steve
>  

Hi. As I would guess you are using "--partitions all" (or preset with it). Try to specify "--partitions p8x8,b8x8,i8x8,i4x4" i.e. without p4x4.

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