FireDTV / w_scan / no data from NIT(actual)

FireDTV / w_scan / no data from NIT(actual)

[Podium B.V.]

Hi all,

I am new to this mailinglist, but I couldn't find any help in forums
so in the IRC someone suggested to mail my question here.

I am trying to get my FireDTV to tune on a mux so I can generate a 
summary of bitrates
of streams within the mux. So my goal is not to watch Digitale TV on my 
Linux system.

Only is goes already wrong with the init scan.... I only get: "Info: no 
data from NIT(actual)"

I tried to summary all the info here : http://pastebin.com/kSwxBsaU
The OS I'm using is ubuntu 13.10 at the moment and I also tried / installed
the latest build:

cd /usr/src
sudo git clone git://linuxtv.org/media_build.git
sudo ./build
sudo make install
sudo reboot

Does anyone has an idea what I am doing wrong ? Or missing ?
I'm new to DVB-C on Linux.

Kind regards!
Ed

Re: FireDTV / w_scan / no data from NIT(actual)

[Steven Toth]

> Only is goes already wrong with the init scan.... I only get: "Info: no data
> from NIT(actual)"

I suspect either their isn't a NIT(actual) table on your frequency, or
the tool isn't waiting long enough for the NIT table to arrive.

- Steve

-- 
Steven Toth - Kernel Labs
http://www.kernellabs.com

Re: FireDTV / w_scan / no data from NIT(actual)

[Podium B.V.]

Dear Steve,

I am already using the "-F" and the "-t 3" option...
So a longer time waiting is not possible.

     -F       use long filter timeout
     -t N   tuning timeout
                   1 = fastest [default]
                   2 = medium
                   3 = slowest

And there are "NIT(actual) table" on the frequencies.
My result should be very much like: http://www.dtvmonitor.com/nl/ziggo-noord

But I also search more what my problem could be and I discovered that
most examples say:

     using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'

and i only get:

     using '/dev/dvb/adapter0/frontend0'

But I guess demuxing is necessary to get the "NIT(actual) table", isn't it ?






On 29-03-14 14:44, Steven Toth wrote:
 >> Only is goes already wrong with the init scan.... I only get: "Info: 
no data
 >> from NIT(actual)"
 > I suspect either their isn't a NIT(actual) table on your frequency, or
 > the tool isn't waiting long enough for the NIT table to arrive.
 >
 > - Steve

Re: FireDTV / w_scan / no data from NIT(actual)

[Steven Toth]

> But I guess demuxing is necessary to get the "NIT(actual) table", isn't it ?

Generally speaking applications configure the demux to pass all pids,
so yes - the demux is typically mandatory. Data is received from the
dvr0 device.

Assuming the card is tuning and delivering complete unfiltered
transport payload reliably, then if no NIT is appearing then I can
only assume either the application isn't waiting long enough, or it
doesn't existing on that frequency.

- Steve

-- 
Steven Toth - Kernel Labs
http://www.kernellabs.com