topic Re: flow chart of Motion estimation block for intel ipp h.264 e in Intel® Integrated Performance Primitives

flow chart of Motion estimation block for intel ipp h.264 encoder

suchethanswaroop — Fri, 13 Nov 2009 19:22:20 GMT

Hi all,

Is there some document where i can find the flow diagram of motion estimation part in intelH264 encoder. The code seems to be confusing as der are many concepts involved at every point. ( like SAD, SATD used, modes used etc)

Thanks in advance

Warm regards,

Suchethan

Re: flow chart of Motion estimation block for intel ipp h.264 e

Chao_Y_Intel — Tue, 17 Nov 2009 02:49:08 GMT

Thanks for the input. The UMC document is considering adding some motion estimation part in the UMC manual. Hope it willprovide some help with your problem.

Regards,
Chao

Re: flow chart of Motion estimation block for intel ipp h.264 e

suchethanswaroop — Tue, 17 Nov 2009 03:07:51 GMT

Quoting - Chao Y (Intel)

Thanks Chao.

It seems Usage of SATD as opposed to SAD is a flag that can be turned on explicitely in the code. May i know in which function is this flag found ?

Is der an option to do RD search ? its not present in the par file.. if so, where can i turn it on..

Thanks a ton!

Regards,

Swaroop

Thanks for the input. The UMC document is considering adding some motion estimation part in the UMC manual. Hope it willprovide some help with your problem.

Regards,
Chao

Re: flow chart of Motion estimation block for intel ipp h.264 e

Chao_Y_Intel — Tue, 24 Nov 2009 01:03:14 GMT

Hi, please find some comment from our expert:

SAD is used in ME in speed mode, otherwise SATD. It can be set or unset manually like below:
if (core_enc->m_info.m_QualitySpeed == 0)
core_enc->m_Analyse |= ANALYSE_SAD;

RD is not used in ME, it can only be used in split decisions.

Thanks,
Chao

Re: flow chart of Motion estimation block for intel ipp h.264 e

suchethanswaroop — Sun, 29 Nov 2009 10:24:12 GMT

Quoting - Chao Y (Intel)

Thanks a lot Chao :).
Hi, please find some comment from our expert:

SAD is used in ME in speed mode, otherwise SATD. It can be set or unset manually like below:
if (core_enc->m_info.m_QualitySpeed == 0)
core_enc->m_Analyse |= ANALYSE_SAD;

RD is not used in ME, it can only be used in split decisions.

Thanks,
Chao