Video Capture Device (v4l2) plugin
- Thread starter leonhard
- Start date
I'm running 26.1.0 on arch linux. That's just the default obs-studio package. I'm using obs-v4l2sink from git commit 36d5bdb, compiled against obs 26.1.0.
Hi.
I am super new to Ubuntu. I run a YouTube channel and I can't use my regular things I use for making videos. OBS seems to be the best option along with Shortcut which I plan to use.
I have no idea how to use this stuff. I have been searching all over and can't find a fix. My problem isn't that I can't select V4L2 but that I have no picture at all even when I have it selected. I tried recording, but I still get no picture and don't know where to find my video recordings so I can't check with another program to see if my recording works or not. I think my audio works fine, but it's a little low. So if someone knows how I can actually view what I am recording and also how to turn my mic up that would be awesome.
My webcam is: PC Webcam for Streaming HD 1080P, Vitade 960A USB Pro Computer Web Camera Video Cam for Mac Windows Laptop Conferencing Gaming with Microphone & Ring Light
My mic is: USB Microphone Kit 192KHZ/24BIT MAONO AU-A04T PC Condenser Podcast Streaming Cardioid Mic Plug & Play for Computer, YouTube, Gaming Recording
Thanks to anyone willing to help a complete newb out.
I am super new to Ubuntu. I run a YouTube channel and I can't use my regular things I use for making videos. OBS seems to be the best option along with Shortcut which I plan to use.
I have no idea how to use this stuff. I have been searching all over and can't find a fix. My problem isn't that I can't select V4L2 but that I have no picture at all even when I have it selected. I tried recording, but I still get no picture and don't know where to find my video recordings so I can't check with another program to see if my recording works or not. I think my audio works fine, but it's a little low. So if someone knows how I can actually view what I am recording and also how to turn my mic up that would be awesome.
My webcam is: PC Webcam for Streaming HD 1080P, Vitade 960A USB Pro Computer Web Camera Video Cam for Mac Windows Laptop Conferencing Gaming with Microphone & Ring Light
My mic is: USB Microphone Kit 192KHZ/24BIT MAONO AU-A04T PC Condenser Podcast Streaming Cardioid Mic Plug & Play for Computer, YouTube, Gaming Recording
Thanks to anyone willing to help a complete newb out.
UPDATE: I was able to see my webcam works with cheese but I still can't see anything in OBS Studio
UPDATE: I found out there was more installing to do before it can work. I ran this "sudo apt install v4l-utils v4l2loopback-dkms v4l2loopback-utils"
But now I have to run this "v4l2loopback-utils" but it say "v4l2loopback-utils: command not found"
UPDATE: I was trying to follow the directions here: https://github.com/CatxFish/obs-v4l2sink/issues/54
I got to this step: sudo apt-get install libobs-dev
And I got this message: "E: Unable to correct problems, you have held broken packages."
UPDATE: I ran this command: "sudo dpkg - obs-4l2sink.deb"
And got this message: "dpkg: error: need an action option"
What should I do?
Hello!
I saw on the v4l2 GitHub that the plugin now ships with OBS. My version is 26.1.2-1, but I don't have the v4l2 option under Tools. I've already installed the v4l2loopback package from pacman and enabled the kernel module with modprobe.
However, I do have an option called "Start Virtual Camera" on the bottom right of OBS, but it doesn't seem to do much and I can't find any settings for it either.
I saw on the v4l2 GitHub that the plugin now ships with OBS. My version is 26.1.2-1, but I don't have the v4l2 option under Tools. I've already installed the v4l2loopback package from pacman and enabled the kernel module with modprobe.
However, I do have an option called "Start Virtual Camera" on the bottom right of OBS, but it doesn't seem to do much and I can't find any settings for it either.
Attachments
Schmiddi1206
New Member
Hey guys, my english is very bad. I need help. I am a Streamer of a Mobile App and i dont can use the virtual CAM. Pls help me, my favorite league is German ;)
Hi
I have a problem with usb cameras which don't report the fps properly. The v4l2 plugin sees it as NaN, so it defines a negative timeout, which creates huge amounts of error logs (several GB in a few minutes).
I posted the issue in the Linux Support Forum, but I haven't received any news, except for someone who has the same problem. You can see the details in this thread: Huge amount of error logs when camera doesn't return framerate
I hope that someone can help me on that here.
Thanks in advance
I have a problem with usb cameras which don't report the fps properly. The v4l2 plugin sees it as NaN, so it defines a negative timeout, which creates huge amounts of error logs (several GB in a few minutes).
I posted the issue in the Linux Support Forum, but I haven't received any news, except for someone who has the same problem. You can see the details in this thread: Huge amount of error logs when camera doesn't return framerate
I hope that someone can help me on that here.
Thanks in advance
OmegaFlatulence
New Member
Hi, is there any way to set the video capture device to a custom resolution? I use a datapath Vision card and capture numerous arcade PCB's that have non standard resolutions (such as 384x224 and 448x224) but I'm unable to dial these in like in a Windows build. Is there any way to manually set these capture resolutions with the current OBS v4l2 module? Is there a work around if it's not possible?
Hi, I think just recently I found "MJPEG" as a native pixel format option (in addition to the previous alternatives of YUV/YVU/BGR3 (emulated) that are still present) for some V4L2 capture devices. A pleasant surprise, but I have not been able to find anything in the release announcements that would suggest when or where this has been added. Anybody has a suggestion when this might have happened? Or is this a consequence of kernel updates or library changes or possibly some other change unrelated to OBS?
I presume that this is due to the following commit (significant time span between creation and actual commit in its current form):
Code:
commit 1c2aea4f89659d69080c397e3377e6183990a135
Author: Morten Bøgeskov <source@kosmisk.dk>
AuthorDate: Sun Jun 7 10:12:01 2020 +0200
Commit: Jim <obs.jim@gmail.com>
CommitDate: Tue Nov 2 06:04:54 2021 -0700
linux-v4l2: Support for Motion-JPEG codecBellator138
New Member
Hello! I'm new here. I installed it and the Qt V4L2 video capture utility does not open at all. The Video test utility opens just fine though. I don't know how to run it in a terminal so I need help with that part so I can post a log file.
Thanks!
Thanks!
Quanifi
New Member
I got the DroidCam app working online only on my Zorin Pro16/Ubuntu PC. But it is not showing up in OBS as a device choice, just the DeskCam as always. Any suggestions....???
paranoidfactoid
New Member
Hi! I'm trying to get an Elgato 1080p usb capture card working in OBS. I have the card, a Panny GH4 camera, and hdmi cable. Running OBS 30.0.on Ubuntu 23.10 OS, Kernel 6.5. There's Pipewire installed, which when I run helvum shows the capture device. And when I run v42l-cttl, it shows the camera recognized.
Further, if I run ffplay, I get video!
This tells me the hardware and OS Kernel does work. So something further up the stack to OBS is b0rked. And I should add, the v4l2 module does not work at all. It recognizes that there's a CAMLINK present, but won't show any video.
Any suggestions?
Thanks!
Further, if I run ffplay, I get video!
This tells me the hardware and OS Kernel does work. So something further up the stack to OBS is b0rked. And I should add, the v4l2 module does not work at all. It recognizes that there's a CAMLINK present, but won't show any video.
Any suggestions?
Thanks!
paranoidfactoid
New Member
Replying to myself: After trying just about everything, I found a random post that suggested starting OBS from the command line. I'd been launching it from a desktop dock.
Aaaaand, that fixed the problem. I have no idea why.