How to decode mpeg ts payload?

Hello,

I need to decode mpeg ts payload in a .pcap file (UDPs with mpegts).

Especially I need PAT/PMT information data. The PAT (Program Association Table) stores the PIDs of all PMTs. I need the PIDs of these PMTs.

What I done is to decode the UDP packets as mp2t. So far so good, but I get only the headers of ISO/IEC 13818-1 like "Sync Byte", "Transport Layer Indicator", "Payload Unit Start Indicator", ..., and finally "Continuity Counter".

What I need is the Information stored in PAT (PIDs of all PMTs) and the information stored in these PMTs (PIDs of all streams).

How I can to that? Thanks Guys!

Regards Robert