Re: cx18: where do the transport stream PIDs come from?

[Lars Hanisch <dvb@cinnamon-sage.de>]

Am 28.02.2010 14:04, schrieb Andy Walls:
> On Fri, 2010-02-26 at 17:23 +0100, Lars Hanisch wrote:
>> Hi,
>>
>>    while working on a small test app which repacks the ivtv-PS into a TS, I received a sample from a cx18-based card. The
>> TS contains the video PID 301, audio PID 300 and PCR pid 101.
>>
>>    Where do these PIDs come from, are they set by the driver or are they firmware given?
>
> For analog captures, for which the firmware creates the TS, the firmware
> sets them.

  That's what I thought. So I will use the same IDs for my conversion of an ivtv-PS.

>
>
>>    Is it possible to change them?
>
> It is not possible to tell the firmware to change them.  There are two
> documented CX23418 API commands in cx23418.h:
>
> CX18_CPU_SET_VIDEO_PID
> CX18_CPU_SET_AUDIO_PID
>
> Unfortunately, I know they do nothing and will always directly return
> 0x200800ff, which is a CX23418 API error code.

  Good to know.

Thanks!
Lars.

>
> Regards,
> Andy
>
>> Regards,
>> Lars.
>
>
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