PID filter testing

PID filter testing

[Benjamin Larsson]

Hi, what tools can I use to test pid filter support in the drivers ?

MvH
Benjamin Larsson

Re: PID filter testing

[Antti Palosaari]

On 11/20/2015 01:00 PM, Benjamin Larsson wrote:
> Hi, what tools can I use to test pid filter support in the drivers ?

dvbtraffic shows all the pids from tuned stream, but IIRC it does not 
work with dvbv5-zap as it opens device blocked mode. dvbv5-zap has 
itself quite similar mode than dvbtraffic, it is --monitor.

To configure custom pids you need to patch tuning file, but usually 
there is already enough pids to test as full scan usually returns tens 
of tv channels (>~100 pids).

Antti

-- 
http://palosaari.fi/

Re: PID filter testing

[Honza Petrouš]

2015-11-20 12:00 GMT+01:00 Benjamin Larsson <benjamin@southpole.se>:
> Hi, what tools can I use to test pid filter support in the drivers ?

Zap utility from dvbapps seems to be some simpler way - you can pass them
the fixed pids and record filtered data by simple command.

See at:
http://www.linuxtv.org/wiki/index.php/Zap

/Honza

Re: PID filter testing

[Benjamin Larsson]

On 11/20/2015 02:27 PM, Honza Petrouš wrote:
> 2015-11-20 12:00 GMT+01:00 Benjamin Larsson <benjamin@southpole.se>:
>> Hi, what tools can I use to test pid filter support in the drivers ?
>
> Zap utility from dvbapps seems to be some simpler way - you can pass them
> the fixed pids and record filtered data by simple command.
>
> See at:
> http://www.linuxtv.org/wiki/index.php/Zap
>
> /Honza

Hi, can you elaborate with a command line example ? To start with I want 
only the 0x1fff pid from a random dvb-c mux.

MvH
Benjamin Larsson

Re: PID filter testing

[Antti Palosaari]

On 11/20/2015 04:25 PM, Benjamin Larsson wrote:
> On 11/20/2015 02:27 PM, Honza Petrouš wrote:
>> 2015-11-20 12:00 GMT+01:00 Benjamin Larsson <benjamin@southpole.se>:
>>> Hi, what tools can I use to test pid filter support in the drivers ?
>>
>> Zap utility from dvbapps seems to be some simpler way - you can pass them
>> the fixed pids and record filtered data by simple command.
>>
>> See at:
>> http://www.linuxtv.org/wiki/index.php/Zap
>>
>> /Honza
>
> Hi, can you elaborate with a command line example ? To start with I want
> only the 0x1fff pid from a random dvb-c mux.

hmm, that is null pid for padding ts to correct size IIRC. Take into 
account that some pid filters / bridges automatically filter it out. 
Usually it is there though.

So it is not very good pid to test. If you want test some pid which is 
always there look those mandatory pids which are pids numbered near 0.

regards
Antti

-- 
http://palosaari.fi/

Re: PID filter testing

[Benjamin Larsson]

> hmm, that is null pid for padding ts to correct size IIRC. Take into
> account that some pid filters / bridges automatically filter it out.
> Usually it is there though.
>
> So it is not very good pid to test. If you want test some pid which is
> always there look those mandatory pids which are pids numbered near 0.
>
> regards
> Antti
>

When I hard code the rtl2833 external pid filter I am able to get only 
that pid. The inverse case also works as that is the default. Anyway I 
just want some tool that I can use from command line that can toggle 
pids somewhat dynamically. To bad there seems to be no ready available 
tool for that.

Adding pid selection to dvbv5-zap in monitor mode looks to be the best 
way forward.

MvH
Benjamin Larsson