[linux-dvb] DVB file formats

Andrew de Quincey adq_dvb at lidskialf.net
Thu Jun 16 14:40:24 CEST 2005

On Thursday 16 June 2005 13:32, Manu Abraham wrote:
> Johannes Stezenbach wrote:
> > On Thu, Jun 16, 2005 at 02:10:10PM +0400, Manu Abraham wrote:
> >>Is service_id supposed to be unique in a bouquet too ? or is it only in
> >>a transponder ?
> >
> > ETSI TR 101 211 says (4.1.1 Network Information Table (NIT) information):
> >
> > "The SI uses two labels related to the concept of a delivery system,
> > namely the network_id and the original_network_id.
> > The latter is intended to support the unique identification of a
> > service, contained in a TS, even if that TS has been
> > transferred to another delivery system than the delivery system where it
> > originated. A TS can be uniquely referenced
> > through the path original_network_id/transport_stream_id.
> > A service can be uniquely referenced through the path
> > original_network_id/transport_stream_id/service_id. The
> > network_id, thus, is not part of this path.
> Are there any cases that you or somebody else has seen Original Network
> ID not to exist or the same like the case seen with service_id as Andrew
> and Christopher stated ...

I'll see if I can find that channel again - but it was over a year ago.

> I believe TS_ID also would be unique in that case to be referenced in
> hierarchial manner..

I definitely remember some multiplexes with the same TS_ID. Care to guess 
which satellite cluster? :)

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