How to fix my Video Capture Device issue ?

[Bobigno]

So let me explain myself, I am a french streamer and i organise a Zelda Speedrun event. The thing is i have some issues with the PC we are using for this event. We only use one PC to stream and we had a total of 3 C920 webcams, 1 LGX, 1LGP, 1 Dazzle DVC 100, 1 GV USB2.

 

The thing is we couldnt controll properly all the cameras and we had random bugs with the video capture of the games. We alsow have 2 stream decks, 2 Keylights Keyboard and mouse and prob some other things pluged in the USB Hub. So i wonder how can i upgrade/avoid the problem. I though about 3 possible things:

 

1 Goin Pro: investing in Professional Video capture gear; Cameras mixing board and all that stuff

2: Just put less overall video capture devices in the first place

3: Redirect all this Data by buying internal Graphics cards/USB through PCI E slot to reduce the demand on the motherboard USB Bus (is this only a thing in the first place ?)

 

In other words I don't know how to get arround these video issues. Sound and internet connexions are good but video is makin me sweat soo im askin you guys what should i do ? Considering the fact that i want to go pro in the future about event making but im too poor at the moment to consider Pro options because im doin this on my free time.

The Pc i was using will not be usable this year so i'll use a PC equiped of a Ryzen 7 2700, 16gb of 2400mhz DDR4  ram, 500gb ssd,  1To of Storage,  GTX 1650 4gigs GPU,   gigabyte, x470 motherboard with 850 watt fully modular 80 plus gold psu.

[Skiiwee29]

Sounds like you likely are out of PCIE bandwidth with all those devices connected. 

[Bobigno]

Is there any way i can work around this ? Alsow having 3 times the same webcam was not a very smart idea cause they are considered as the same one by OBS. Is PCIE gen 4 be a good way to expend the bandwidth ?

[mariushm]

Try to spread the usb devices over multiple controllers inside your computer.

 

Look in Device Manager under USB.

Also, may want to use the usb 3 header on the motherboard,if any is free... you can buy a bracket with 2 usb 3.0 ports so that you'd have those usb ports in the back of your pc instead of front of the case..

 

If you have to use multiple computers, you can use NDI to "push" the image of one or several cameras/capture cards to your main PC , see https://www.obs.live/articles/2019/5/1/how-to-stream-with-two-pcs-using-obs-studio-and-the-ndi-plugin

 

NDI uses a kind of a lossless compression, sends the captured stuff at something like 100-200 mbps to your main streaming pc, to your main OBS

 

no, pci-e 4 won't help you, the devices will still be pci-e 3.0 and at least right now, x570 chipset won't allow you to split the x16 slot into 2 x8 slots.

I assume you're currently using the x470 motherboard for this reason, to plug a capture card in the 2nd pci-e x8 slot.

 

There's tiny computers you can make if you decide to use NDI or something like that, for example you could buy this for 23$ : https://www.ebay.com/itm/Slim-Mini-ITX-Intel-Atom-D525-motherboard-with-2G-DDR3-SODIMM-12V-DC-Input/123872887902

 

You could power it directly with 12v from the main computer ... get a molex to sata adapter cable, cut the sata connector off, get a standard barrel jack connector and connect the wires together... you get yourself the molex-dcin power cable.  Or buy separately a 12v wallwart adapter, probably anything around 30-60w will be plenty.

 

 

You'll only need a SATA drive to boot some OS from it.

 

It's a dual core 1.8 Ghz  atom cpu, but should be powerful enough to capture 2-3 SD resolution cameras or 1-2 HD cameras and send them to your main PC using NDI.

 

[Bobigno]

I'm probably not goin to stream with 2 Pc and i wont see the point cause im not using te PC to run games only stream. ^^'

 

[mariushm]

No, it's not streaming with two PCs.

 

You can use NDI to capture something on one PC and send the data to your original PC through the ethernet cable, using regular network card.

On your main stream PC, these streams show up as independent "sources" and you can treat them like cameras, capture cards, and so on.

 

The idea is that if for some reason you can't use easily two or three webcams from the same manufacturer on your stream PC, a workaround may be to shift a webcam or two on another system and send the footage to your stream pc. The stream PC will see them as regular sources so you can switch between them as if they're plugged into the stream pc directly.

 

23$ is cheap enough that it could be worth playing with that.