[vlc-devel] Prolem with libdvbpsi7

Jean-Paul Saman jpsaman at videolan.org
Thu Oct 18 09:57:41 CEST 2012


On Wed, Oct 17, 2012 at 11:03 PM, Grant Taylor <zl1wtt at yahoo.com> wrote:
> ________________________________
> From: Jean-Paul Saman <jpsaman at videolan.org>
> To: Mailing list for VLC media player developers <vlc-devel at videolan.org>
> Sent: Tuesday, 16 October 2012 8:39 PM
>
> Subject: Re: [vlc-devel] Prolem with libdvbpsi7
>
> Hi Jean-Paul,
>
> Yes, I understand that I have two independent Mpeg2 streams. I have been
> involved with broadcast engineering for some time now. I have been using VLC
> for as long as it has been about and been watching it evolved over that
> time.
>
> I have been using VLM files for remapping TS PIDs and IP streaming this data
> to a QPSK modulator for testing. I can see a lot of potential in doing this
> with VLC in the future when the cost of IP to ASI DVB equipment comes more
> affordable. I also in the process of designing a low cost IP (UDP) to DVB RF
> modulator, if I can see any market potential in a product like this.  I will
> make all my software and setup information available to all here for any
> possible changes to VLC at future date.
>
> So I'm passing on any problems I may come across in doing this research and
> development work. I'm not sure if anyone here has use VLC this way before to
> build up multiplexed DVB streams.
>

If you want to multiplex several SPTS streams in one MPTS stream, then
you should use it in combination with bridge-in and bridge-out
modules. The remapping itself is something you might need to do before
that, since it does no longer work in current VLC with VLM.

Remapping PID can also be done with DVBlast
(http://www.videolan.org/projects/dvblast.html).

Kind regards,

Jean-Paul Saman.

> Regards
> Grant
>
>
>
> Hi Grant,
>
> You are aware that you are not constructing a MPTS stream here, but
> merely sending out 2 independent MPEG-TS streams (aka SPTS)?
>
> On Tue, Oct 16, 2012 at 2:52 AM, Grant Taylor <zl1wtt at yahoo.com> wrote:
>> Hi Jean-Paul,
>>
>> Here is one of my VLM files that I'm having problems with. As you can see
>> I'm trying to feed two IP streams into one. But for some reason the PID's
>> are not remapping to what I have specified.
>>
>> new channel1 broadcast enabled
>> setup channel1 input "udp://@:1231 :udp-caching=500"
>> setup channel1 output
>> #std{access=udp,mux=ts,dst=192.168.0.100:1234,name="TS
>> 1",}
>
> The last comma, should not be there.
>
>> setup channel1 option sout-ts-program-pmt=102
>> setup channel1 option sout-ts-pid-audio=101
>> setup channel1 option sout-ts-pid-video=100
>> setup channel1 option sout-ts-sdtdesc="TS 1"
>> setup channel1 option sout-ts-netid=40
>> control channel1 play
>>
>> new channel2 broadcast enabled
>> setup channel2 input "udp://@:1232 :udp-caching=500"
>> setup channel2 output
>> #std{access=udp,mux=ts,dst=192.168.0.100:1234,name="TS
>> 2",}
>
> idem
>
>> setup channel2 option sout-ts-program-pmt=202
>> setup channel2 option sout-ts-pid-audio=201
>> setup channel2 option sout-ts-pid-video=200
>> setup channel2 option sout-ts-sdtdesc="TS 2"
>> setup channel2 option sout-ts-netid=40
>> control channel2 play
>
> I will comment on the working later when I actually done some testing.
>
> Kind regards,
>
> Jean-Paul Saman.
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