TDA2PXEVM: H264 encoder Motion Vector Range parameters configuration

Ravikant

Part Number: TDA2PXEVM

Hello All,

I have a query regarding MV Range parameters for P and B frame. Are these values binding on the encoder which it will not violate or are these just suggestions which encoder can decide to override ?

interCodingParams -> searchRangeHorP : 144
interCodingParams -> searchRangeVerP : 32
interCodingParams -> searchRangeHorB : 144
interCodingParams -> searchRangeVerB : 16

I am analyzing the encoded file in codec visa tool and motion vector values are crossing those specified in configuation.

Thanks a lot,

Ravikant

over 7 years ago

0 Prashanth Kumar15 over 7 years ago

Mastermind 8775 points

Hi Ravikant,

The MVs are with quarterpel resolution. So there are chances it can go upto 576(144*4). Again, this can go beyond 576 w.r.t GVM offset.

0 Ravikant over 7 years ago in reply to Prashanth Kumar15

Prodigy 220 points

Hi Prashanth,
Thanks for your response. Just to confirm .. so the range we specify in the mentioned parameter is in units of pixels and MV values we see in encoded files are in units of quarterpel ...correct ?

0 Prashanth Kumar15 over 7 years ago in reply to Ravikant

Mastermind 8775 points

Hi Ravikant,
Yes, your understanding is correct.

Processors

Processors forum

TDA2PXEVM: H264 encoder Motion Vector Range parameters configuration