How can we idenify the MPEG2VIDEOINFO header's dwSequenceHeader from (received from RTP) MPEG4 Encoded buffer ?

How can we idenify the MPEG2VIDEOINFO header's dwSequenceHeader from (received from RTP) MPEG4 Encoded buffer ?

- Search for Group_of_vop_start_code (00 00 01 B3 check it without space ).Bytes Before the Group_of_vop_start_code is considered as a MPEG2VIDEOINFOHEADER's dwSequenceHeader.
From the Start of the VOS header's , we can identify the width and height of the video. otherwise we can hardcode the data with the specified configuration at the receiver side.

group_of_vop_start_code - 00 00 01 B3 -Search for 00 00 01 B3 Bytes before this code is added as a Header format;

MPEG2VIDEOINFO vidInfo;
vidInfo.dwSequenceHeader[0] = ( BYTE*) pbBytesBefore000001B3;
MPEG2VIDEOINFO vidInfo; BYTE* pbHeader = (BYTE*)vidInfo.dwSequenceHeader[0]