NDI: Unable to find source in OBS but visible in NDI Virtual Input

SirRoss

SirRoss

New Member
Greetings!

I am using NDI between 2 PC's and on my "Streaming PC" I can't find my Output Source from my "Gaming PC". It did already work, but from one day to the other it just disappeared in the dropdown list where I can select the NDI input Source.

On my "Streaming PC" I can find the Output Source in the NDI Virtual Input Tool. Also, when I enable the NDI output on my "Streaming PC", I am able to find the source on my "Gaming PC".

I tried to reinstalling OBS, reinstalling NDI (also tried to get the same NDI version on both PC's, restarted my PC many times, did Firewall changes and did reset netsh.

"Gaming PC" Log: https://obsproject.com/logs/T3BU9zFLzk-HdA5_
"Streaming PC" Log: https://obsproject.com/logs/nltxiv-scPOFvrpF

If you need additionally informations please just ask :)
I am very greatful to every help I can get!
 
Sukiyucky

Sukiyucky

Member
Yep, I ran into the same problem. I suppose this may have to do with a Windows update.
I solved the problem by setting up my network again.
  1. Run OBS on all your computers
  2. On your NDI clients and server, remove the NDI sources
  3. Reboot all your machines on the network
  4. Add the NDI sources back to your scenes
NDI should interrogate the network to rediscover the NDI clients and list them in the Source name drop down. On the NDI server, by default NDI will list the main output name in the drop down - avoid choosing that.
 
SirRoss

SirRoss

New Member
Sukiyucky said:
Yep, I ran into the same problem. I suppose this may have to do with a Windows update.
I solved the problem by setting up my network again.
  1. Run OBS on all your computers
  2. On your NDI clients and server, remove the NDI sources
  3. Reboot all your machines on the network
  4. Add the NDI sources back to your scenes
NDI should interrogate the network to rediscover the NDI clients and list them in the Source name drop down. On the NDI server, by default NDI will list the main output name in the drop down - avoid choosing that.
Click to expand...

Thank you for your answer! :)

By removing the NDI Sources, do you mean just removing it in OBS? Or a full reinstall of it?
 
SirRoss

SirRoss

New Member
@Sukiyucky

Okay kinda works and kinda not, I think I have to explain my setup a bit more:
My Client and Server are connected to a switch. So I tried your steps just in my LAN between Switch, Server and Client, because it's not easy or kinda undoable to restart all devices in my network when they are connected to my router. This works fine. But when I plug my Wifi Router back into the switch, and I am getting my old IP4 adresses it doesn't work anymore. So I tried to restart the router as well (+ restart of my Server and Client and removed/added the NDI Source) -> doesn't work. And since I only worked via LAN I tried also it with Wifi because I get other IP's as well -> doesn't work.
 
SirRoss

SirRoss

New Member
cyclemat said:
ich mache das mal gerade auf deutsch gut hast ne statische IP Adresse vergeben in welcher Range vergibt denn dein Router die Ip Adressen per DHCP nicht das es da zu Konflikten kommt
und OBS Immer als Administrator Starten auf beiden PC`s
Click to expand...
Ah cool, danke haha

Also, der Range liegt zwischen 20 und 200
1605786975615.png
 
SirRoss

SirRoss

New Member
Ich habe die IPs jetzt geändert auf 201 und 202. Ändert nichts am Problem. Ich habe eine FritzBox (7530)

English
I changed my ips to 201 and 202. Didn't solve the problem. I have a Fritzbox (7530)
 
SirRoss

SirRoss

New Member
cyclemat said:
bei deinen und in den erweiterten netzwerk freigabe einstellungen ?!?!
schau aber auf beiden rechnern
Click to expand...

Schaut ident auf beiden Rechnern aus

1605800149585.png


1605800170443.png


cyclemat said:
haste mal die windows firewall deaktiviert ? an beiden pcs ?
Click to expand...

Ja, auf beiden PC's ausgeschaltet! Es wird mir angezeigt! So jetzt die Frage, warum?


English Summary:

Network Settings are set on private on both pcs, settings are as shown on the pictures above.
I disabled the windows firewall on both pcs, now my Streaming PC is able to find my Gaming PC.
Question now: Why?
 
SirRoss

SirRoss

New Member
Okay, I checked. It's smth wrong on my streaming PC. (Enabled / Disabled Firewall and checked if it works)
 
SirRoss

SirRoss

New Member
Okay now it works.


My End Solution:
I don't know which of the stepps solved the problem, but what you can do is:
  • set your ips (of both pcs) out of your dhcp range
  • run obs as admin
  • set all obs based inbound rules to Private and to 'reset to user' -> in advanced tab (sorry if the translation isn't correct)

Also you can try this, I am not sure if also was a stepp to solve the problem:
Sukiyucky said:
  1. Run OBS on all your computers
  2. On your NDI clients and server, remove the NDI sources
  3. Reboot all your machines on the network
  4. Add the NDI sources back to your scenes
NDI should interrogate the network to rediscover the NDI clients and list them in the Source name drop down. On the NDI server, by default NDI will list the main output name in the drop down - avoid choosing that.
Click to expand...


Thanks to @cyclemat and @Sukiyucky for helping me solving my problem.
Ehrenmänner
 
C

CoffeeJoe

New Member
I'm having this EXACT same issue. It's been working like 9. months. in OBS. I've updated OBS on my Server PC. and I've updated NDI Tools to both the Screen Capture PC and my Server PC with OBS and OBS only sees my local PC but NDI does show up if I launch the NDI Tools Server app.
I'm unclear what else to look at.
 
C

CoffeeJoe

New Member
Sorry for the double post. I wanted to provide more information.

I'm having the EXACT symptom. but I have not been successful in resolving my issue yet.

Symptom:
I am using NDI between 2 PCs. I stream using OBS on my "Streaming PC" from an NDI Screen Capture on my "Presenter PC." On the "Streaming PC", in OBS the NDI Source from the "Source Name" dropdown the NDI Source from my "Presenter PC" is not there. This has been working for over 6th months.

If I open NDI Tools and start the "Studio Monitor" app I can see it fine. (I had to record the raw capture this way as a workaround.)

Attempted Fixes:
I updated OBS on the "Streaming PC," then reinstalled and updated NDI Tools on Both PCs. (also tried to get the same NDI version on both PCs I rebooted both PCs won't work. in OBS. I did not Uninstall OBS or NDI Tools I only Updated them.

I also deleted all the NDI Sources in OBS and added them again. No change.

Current versions: (I was only about 6 months. behind in OBS and NDI Tools)
OBS Studio 27.2.1 (64-bit) | NDI Version 5.1.1.0 Windows 10, (10.0.19042) 64-bit Any thoughts appreciated.
 
C

CoffeeJoe

New Member
Thank you @cyclemat for your advice and prompting.

I woke up this morning determined to finish the troubleshooting. I left off with reinstalling OBS-NDI-4.9.0 Plugin for Windows over the top of the existing install then rebooted = No difference.

I didn't mess with BitDefender's Firewall settings (my AV software) b/c it was a bit confusing. This morning I figured out the interface. I guess I was just frazzled at the time.

With OBS open and the NDI stream coming in...
Firewall's Network Adapter settings = Home/Office network
In the Firewall application list, OBS Studio was not explicitly "Allowed," so I allowed it.
I opened the NDI Source and clicked the Source name dropdown, = No difference.

With OBS open and the NDI stream coming in...
I decided to "Reset" BitDefender's firewall rules hoping that the software would detect that It should allow OBS to work.
When I opened the NDI Source and clicked the Source name dropdown, BAM there it was! = FIXED. It works just as before!

It seems the OBS-NDI-4.9.0 Plugin is still working with:
Windows 10, (10.0.19042) 64-bit
NDI Tools Version 5.1.1.0
OBS Studio 27.2.1 (64-bit)
 
C

coopa

New Member
SirRoss said:
Okay now it works.


My End Solution:
I don't know which of the stepps solved the problem, but what you can do is:
  • set your ips (of both pcs) out of your dhcp range
  • run obs as admin
  • set all obs based inbound rules to Private and to 'reset to user' -> in advanced tab (sorry if the translation isn't correct)

Also you can try this, I am not sure if also was a stepp to solve the problem:



Thanks to @cyclemat and @Sukiyucky for helping me solving my problem.
Ehrenmänner
Click to expand...
For me it was the firewall. I disabled on both machines and huzzah - second machine is now showing up as a source option - which feels odd because I was able to pull the second machine into NDI Monitor. Oh well.

Turned WD on for the observer (machine sending feed) and it still sends

Machine one (production) windows defender needs to be off to connect.
 
Last edited:
E

Enko63

New Member
This fixed it for me.

Go to Control Panel -> System and Security -> Windows Defender Firewall -> Allow an app or feature through Windows Defender Firewall.

Make sure OBS Studio is checked. If its not on the list, then click "Allow another app..," and add your obs exe.

Check that mDNS is also checked.

--------------------

Following is from some NDI documentation I found on the web.
If it's still not working, you may need to go to Advanced Settings and add inbound and outbound rules for the following ports:
5353 UDP - NDI uses it for auto discovery mechanism. Opening this port only allowed me to see the NDI streams in the drop down menu on the NDI source but didn't actually show the video.
5960 - NDI messaging server.
Video streams start on port 5961 and go up sequentially for additional streams.
 
M

mou22y

New Member
Now I can finally see my NDI sources in OBS 27.4.2 again :) After spending many hours trying to find a solution, reinstalling everything, turning firewall off etc. I finally found one solution that worked for me :)
The solution was in this thread in German. So i did not take note of it the first times i read this thread.
@SirRoss solution worked for me. My network setting was on Public settings so I changed to Private. Voila. It worked right away :) I have no idea why my network was on Public settings. I always set my network to Private. Somehow it had changed.
1706536066622.png
 
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