Portsdown4 OBS DATV-Easy Pluto - unable to stream

Digital ATV - The latest generation, cutting edge ATV - Please discuss it all here.
Forum rules
This forum is run by the BATC (British Amateur Television Club), it is service made freely available to all interested parties, please do not abuse this privilege.

Thank you
Rishtonite
Posts: 29
Joined: Tue Jun 03, 2025 4:03 pm

Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by Rishtonite » Sat Sep 27, 2025 9:36 pm

From https://wiki.analog.com/university/tool ... ustomizing

Pluto config.txt, "It's a simple matter of updating the [NETWORK] settings of the PlutoSDR ipaddr (default is 192.168.2.1), and your host PC settings ipaddr_host (default of 192.168.2.10). ip_addr and ipaddr_host must be unique, and must be on the same subnet.

I can't find a setting for Stream Server in OBS that works. It could be complicated by the fact that my PC is on a toatally different net (172.x.x.x) and isn't shown on the Portsdown screen under Network Devices.

Do I need to put my PC's ip address into the Pluto config.txt in the [USB_ETHERNET] section? Any other suggestions?

I'm reluctant to change things I'm unsure of in case I "break" something I can't restore

Thanks, Barry, G4IAT

g8lce
Posts: 420
Joined: Sun Dec 06, 2015 10:26 am

Re: Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by g8lce » Sun Sep 28, 2025 7:41 am

When you plug the Pluto into the computers USB it makes the computer the 192.168.2.10 and it is 192.168.2.1 but this is not your normal LAN. Just think of it as an extra LAN in the USB world of your computer. Send the OSB stream to 192.168.2.1 and the computer should sort it out! Look at advanced IP scanner and scan for 192.168.2.1-255 and see if it shows you anything.

Martin G8LCE

g0mjw
Posts: 2641
Joined: Sat Sep 20, 2014 9:15 am

Re: Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by g0mjw » Sun Sep 28, 2025 8:06 am

Rishtonite wrote:
Sat Sep 27, 2025 9:36 pm
From https://wiki.analog.com/university/tool ... ustomizing

Pluto config.txt, "It's a simple matter of updating the [NETWORK] settings of the PlutoSDR ipaddr (default is 192.168.2.1), and your host PC settings ipaddr_host (default of 192.168.2.10). ip_addr and ipaddr_host must be unique, and must be on the same subnet.

I can't find a setting for Stream Server in OBS that works. It could be complicated by the fact that my PC is on a toatally different net (172.x.x.x) and isn't shown on the Portsdown screen under Network Devices.

Do I need to put my PC's ip address into the Pluto config.txt in the [USB_ETHERNET] section? Any other suggestions?

I'm reluctant to change things I'm unsure of in case I "break" something I can't restore

Thanks, Barry, G4IAT

It is hard to understand what you are doing, Pluto, Portsdown PC, OBS Streamer and DATV-Easy? Explain the set up. Is the Pluto on the Ethernet? What has the Portsdown4 got to do with this? OBS is streaming to where etc.

Rishtonite
Posts: 29
Joined: Tue Jun 03, 2025 4:03 pm

Re: Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by Rishtonite » Sun Sep 28, 2025 11:18 am

Martin - my RPi Portsdown 4 is in the 172 ip range, not 192 and I can get the RPi touch screen on my PC in Firefox.

IP scanner shows no devices in the 192 range.

Pico Tuner connected to PC via USB and receives via Open Tuner - so as not to overload RPi, Also I can see signal strength, which isn't on the RPi screen when receiving picture.

The TX setup is PC with OBS and DATVEasy on 172 ip, RPi 172, Pluto on original 192.168.2.1
I can transmit test card and webcam, if webcam connected to RPi

What I'm trying to do is transmit (h264/mp4/mkv) video files that are on the PC by streaming with OBS/DATVEasy

Do I need to change the RPi to 192.168.2.10 (as shown on the RPi screen) rather than the 172 ip range? (I can't remember WHY I made it a 172 address)
Is OBS trying to get to the Pluto via the RPi?

Confused!

Barry G4IAT

Basil
Posts: 406
Joined: Tue Sep 10, 2013 7:28 pm

Re: Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by Basil » Sun Sep 28, 2025 12:53 pm

Barry, if you have a PC, a Pico based Minitiouner, DATV Easy, Open Tuner, a Pluto, an amp and an LNB / Dish I don't understand why you are trying to include the Portsdown in the chain. Pico Tuner receives and you use Open Tuner to view the signals. DATV Easy and the Pluto and amp transmit. You view the received signals on the PC screen. The PC sends your video to the Pluto.

If you want to transmit camera video you connect the HDMI output of the camera to an HDMI to USB dongle which is plugged into your PC.

What's the Portsdown for???
Best regards,

Chris, 2E0ILY in rural Shropshire.

g0mjw
Posts: 2641
Joined: Sat Sep 20, 2014 9:15 am

Re: Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by g0mjw » Sun Sep 28, 2025 1:36 pm

Basil wrote:
Sun Sep 28, 2025 12:53 pm

What's the Portsdown for???
This is also what was confusing me. Why is there a Portsdown in the loop? It is not needed in this case. The Portsdown works stand alone with the Pluto connected to it. But if the Pluto is plugged directly into the PC, the Portsdown is not required. A PC usually is much better at encoding than a PI, will do H265 etc.

Mike

Rishtonite
Posts: 29
Joined: Tue Jun 03, 2025 4:03 pm

Re: Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by Rishtonite » Sun Sep 28, 2025 3:00 pm

Ok. I've obviously misunderstood.
I could still build the Portsdown and use it with inputs selected from the touch screen, but to use OBS and DATVEasy I need to connect the Pluto to the PC, not the Portsdown Pi.
The other thing I find confusing is ip addresses. I presumed that I would not be able to access 192 devices from my 172 ip addresses (other than with a browser).
I'll do some "re-wiring" and connect the Pluto direct to the PC then see if OBS/DATVEasy works as I presumed it should.
Thanks for all the comments/suggestions.

g3uis
Posts: 37
Joined: Tue Oct 18, 2022 10:30 am

Re: Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by g3uis » Sun Sep 28, 2025 4:43 pm

You don’t need to change your LAN subnet. Just plug the Pluto into the USB and it will just work. Also you can’t cross subnets with a browser only a bridge can do that.

Tony

Rishtonite
Posts: 29
Joined: Tue Jun 03, 2025 4:03 pm

Re: Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by Rishtonite » Sun Sep 28, 2025 11:10 pm

Now given up trying to get OBS to work with DATVEasy. Going to try VMix.

On another note, I've pugged in an EasyCap and it shows up in USB devices as Syntek STK1160. From a search in the forum for STK1160 I'm unsure if that is a device that should be ok.... and is it plug'n'play in the RPi or do I need to set it up from a menu?

g0mjw
Posts: 2641
Joined: Sat Sep 20, 2014 9:15 am

Re: Portsdown4 OBS DATV-Easy Pluto - unable to stream

Post by g0mjw » Mon Sep 29, 2025 7:06 am

Rishtonite wrote:
Sun Sep 28, 2025 11:10 pm
Now given up trying to get OBS to work with DATVEasy. Going to try VMix.

On another note, I've pugged in an EasyCap and it shows up in USB devices as Syntek STK1160. From a search in the forum for STK1160 I'm unsure if that is a device that should be ok.... and is it plug'n'play in the RPi or do I need to set it up from a menu?
I think your problem here is you keep going off on a tangent. If you follow the instructions, it just works. If you try something different, unless you really know what you are doing it is likely to end in frustration. Even if you do know what you are doing it often ends in frustration as well.
Mike

Post Reply

Return to “DATV - Digital ATV”