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Hi Simon, The Length specified in the example is
SNDU length and NOT MPEG2-TS header length, as the ULE draft specifies
one SNDU can prolong/extend more than one MPEG2-TS packet (that’s what
this example trying to explain). In this example complete MPEG2-TS header
information are not discussed, only PUSI and if PUSI is ONE payload pointer are
discussed. -William. From:
owner-ipdvb@erg.abdn.ac.uk [mailto:owner-ipdvb@erg.abdn.ac.uk] On Behalf Of Simon Teh Dear members, I’m quite confusing with the example shown in
Annex A on the examples of SNDU packing. Example A.1: Two 186B PDUs. SNDU A is 200 bytes (including the ULE destination NPA address) SNDU B is 200 bytes (including the ULE destination NPA address) The sequence comprises 3 TS Packets: SNDU PP=0 Length +-----+------+------+------+- -+------+ | HDR | 0x00 | 0x00 | 0xC4 | ... | A182 | +-----+----*-+-*----+------+- -+------+ PUSI=1 * * *****
For the SNDU Length shown in the figure above, why it
is 0xC4? The size for a MPEG-2 TS packet is 188, if minus TS
header and PP, is 183 bytes. So the maximum size that the IP packet (SNDU A) can be
encapsulated should be 183 = 0xb7, But why it is 0xC4 instead of 0xb7? Or Do I miss
something? Hope somebody could help me on this matter. Thanks in
advance! Best Regards, Simon Teh Universiti Sains |