Inter prediction Modes

ali_umair21 · 5th February 2013, 17:59

Hi,

I am confused about how do we select which inter-prediction mode we need to chose. I mean how do we decide which mode gives us the minimum number of bits to store/encode. For example a 16x16 mode may result in more sum of absolute error but requires only one unit of overhead (interm of MB packet fields) as compare to if we encode the same area with 4x4 macroblocks which may result in less number of SOAE but require 4 units of overhead.

Hope I made question clear.

Thanks

LoRd_MuldeR · 6th February 2013, 02:06

I guess you cannot "know" beforehand. You have to try and see which one gives the best result/compromise for "error -vs- bit cost". This is called rate-distortion optimization (RDO).

5th February 2013, 17:59	#1 \| Link
ali_umair21 Registered User Join Date: Jan 2013 Posts: 5	Inter prediction Modes Hi, I am confused about how do we select which inter-prediction mode we need to chose. I mean how do we decide which mode gives us the minimum number of bits to store/encode. For example a 16x16 mode may result in more sum of absolute error but requires only one unit of overhead (interm of MB packet fields) as compare to if we encode the same area with 4x4 macroblocks which may result in less number of SOAE but require 4 units of overhead. Hope I made question clear. Thanks

6th February 2013, 02:06	#2 \| Link
LoRd_MuldeR Software Developer Join Date: Jun 2005 Location: Last House on Slunk Street Posts: 13,248	I guess you cannot "know" beforehand. You have to try and see which one gives the best result/compromise for "error -vs- bit cost". This is called rate-distortion optimization (RDO). __________________ Go to https://standforukraine.com/ to find legitimate Ukrainian Charities 🇺🇦✊