Re: How does MPE handle the last byte?

[alain.ritoux@6wind.com]

rq inside,

Patrick Cipiere wrote:
> > So, if I understand this, it means:
> >
> > The receiver stops processing the MPEG-2 TS Packet
> > Payload after it has processed the end of the MPE Section, 
> > when there is no PUSI set. 
> >
> > That is, it will silently discard the last (unused)
> > byte in the example below?

Both points are also my understanding.


> Yes, and 
> - the unused byte(s) have to be filled with 0xff
> - the next pointer_field has to be 0x00
> > From ISO/IEC 13818-1
> --------------------
>
> Adaptation fields may occur in Transport Stream packets carrying PSI
> sections.
>
> Within a Transport Stream, packet stuffing bytes of value 0xFF may be
> found in the payload of Transport Stream packets carrying PSI and/or
> private_sections only after the last byte of a section. In this case
> all bytes until the end of the Transport Stream packet shall also be
> stuffing bytes of value 0xFF. These bytes may be discarded by a
        ^^^^^^^^^^^^^^^^^^^^^^^^

To keep in sync whith what is done in the DVB world, maybe the
ULE-method should force padding & stuffing to be done also with 0xff,
(as in the ENC-Method).

To have it simple, maybe then, in the ULE, the end-indicator should
be set to 0xffff (instead of 0x0000), which of course would forbid SNDU
with such a length field, but is it a big deal ?

Regards
Alain.
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Alain RITOUX
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