How to get Motion Vector Data values?

Robert Smith

I'm implementing packetization of H.263 bitstream encoded by TI C66x_mp4venc_02_04_01_02_ELF
encoder on C6678 evm. According to RFC 2190, in order to define H.263 Payload Header (Mode B),
I need to fill HMV1 and VMV1 fields.

Can anyone help me to understand how can I get these values using C66x_mp4venc_02_04_01_02_ELF
encoder?

Thanks

over 13 years ago

0 Hongmei Gou over 13 years ago

TI__Expert 4335 points

Hi Robert,

We examined the codec source code. H263 implementation supports only Mode A. It does not support Mode B or Mode C.

Thanks,

Hongmei

0 Hongmei Gou over 13 years ago in reply to Hongmei Gou

TI__Expert 4335 points

Hi Robert,

Are you blocked because Mode B is not supported? Please let us know the impact on your side.

Thanks,

Hongmei

0 Robert Smith over 13 years ago in reply to Hongmei Gou

Intellectual 640 points

Hi,

Since encoder library does support getting GOB and MB indices, I was able partially to implement Mode B packetization (split frame on GOB and MB boundaries).

I've set HMV1 and VMV1 fields to zeros. So far I don't see any problems, but we haven't started serious testing yet.

So I can say that we are not blocked on this problem.

Thanks

Robert

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How to get Motion Vector Data values?