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Re: Transport stream source


From: Steven Barbo
Subject: Re: Transport stream source
Date: Sun, 4 Apr 2021 11:09:51 -0500

Hello.
If the question is, how can one receive an multicast udp transport stream into udp  gr source block?

as a test, i've an encoder that encodes a transport stream to udp://239.255.42.42:5004  - 

     socat udp4-recv:5004,ip-add-membership=239.255.42.42.0:0.0.0 udp4-sendto:192.168.12.12:5006

now send it back out using multicast address 239.255.99.99: 5008 from gr block - 

mc.png


On Sat, Apr 3, 2021 at 2:48 PM Ralf Gorholt <ralf.gorholt@gmx.de> wrote:
Dear all,

instead of using a file source, I would like to get data from a video
stream into GNU Radio. Is this possible?

With VLC, I can connect to the stream using a URL like
udp://230.0.0.10:1234. How can I do this in GNU Radio? I have tried to
use a UDP source with this address and payload size 1316 (needed for VLC
when it connects to a UDP sink in GNU Radio) and to pass the data to a
UDP sink at address 230.0.0.20:10000 and payload size 1316 to which I
can connect with VLC to see if it works but when I start the flow graph,
nothing seems to come out, VLC tries in vain to connect.

Thank you very much and happy easter!

Kind regards,

Ralf



--
If something is requisite, how can it possibly be, prerequisite? 

vanitas vanitatum omnia vanitas
later, steve
http://umn.edu/~barbo

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