DVB-T and DVB-T2: quick sanity check

Russel Winder russel at winder.org.uk
Thu Apr 21 07:24:02 UTC 2016

On Wed, 2016-04-20 at 15:20 -0700, Reynaldo H. Verdejo Pinochet wrote:

> If you'd like to help getting this fix on dvbsrc, can you please
> reproduce your failure with gst-launch and a recent checkout
> from master and put your full command line alongside a
> *dvb*:5 debug log for a failed run at bugzilla?.

Will a use of gst-launch be equivalent to usage from a C++ program?

I update and recompile my set of GStreamer libraries to master HEAD
very regularly and certainly before doing anything with GStreamer, so I
already good with being up to date :-)

I'll put something together tomorrow (today, as yesterday, is a
problematic day for doing stuff like this, long story :-(

> For DVB-T2 you need to be properly setting: frequency, delsys,
> bandwidth, code_rate_hp, code_rate_lp, modulation,
> transmission_mode, guard_interval, hierarchy_information
> and stream_id. Some of these parameters might have sane
> defaults but please double check.

All of these parameters should be picked up from the virtual channels
file, so there should be no need to specify them manually.

> The "Failed to get statistics" messages should be harmless,
> although It'd be good to know what the failing ioctl is. Right
> now we are assuming the ones we use (_READ_STATUS,
> _READ_BER, etc) always work.

I'll delve some more tomorrow and over the weekend. Apologies for the
delay in getting on to this.

Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder at ekiga.net
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel at winder.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder
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