[mythtv] DVB-S with no SDT / NIT tables

Bill Williamson bill at bbqninja.com
Mon Oct 29 00:57:25 UTC 2007

On 10/26/07, Manu Abraham <abraham.manu at gmail.com> wrote:
> Steven Ellis wrote:
> > On Wed, October 24, 2007 12:47 am, Janne Grunau wrote:
> >> On Tuesday 23 October 2007 07:26:25 Steven Ellis wrote:
> >>> There are some DVB-S services on Optus D1 that don't have any SDT or
> >>> NIT entries on their TS stream. For details see 12643V at
> >>> http://www.lyngsat.com/optusd1.html.
> >>>
> >>> Now is there any way to specify Audio and Video PIDs for a channel
> >>> when the SDT information doesn't exist?
> >> The PIDs are defined in the in the PMT.
> >>
> >>> These channels can be loaded onto generic DVB-S STBs where you can
> >>> manually add the A/V PID details, and it would be great if we could
> >>> get them with MythTV. I've asked on the Users list, but after looking
> >>> at the code i'm wondering if it will need a patch.
> >> As long as there is no NIT+SDT and valid PAT+PMT on the transponder the
> >> scanner should find them.
> >
> > Sadly there is no PMT either.
> >
> > All that the DVB-S transponder is carrying are the Audio and Video PIDs,
> > there are no other information streams present.
> >
> If there are is no valid PAT/PMT, then it is not a valid MPEG2 TS (which are
> mandatory, not optional)

While that's true, the fact is:
-Commercial (but non-propriatary) set top boxes pick up the channel
without issue
-Other linux based solutions pick up the channel without issue
-If this were happening in the US it'd be a "no brainer" fix

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