V4l2loopback vlc

V4l2loopback vlc. Set device fps (if format is already negotiated). Now my goal is to loopback /dev/video0 to /dev/video1, but in that process my stream is getting a green tint, and it's Apr 21, 2021 · no. #235 opened on Oct 11, 2019 by allsey87. Apr 22, 2022 · I have a script that writes MJPEG from an HDMI video capture card (/dev/video0) to a v4l2loopback device (/dev/video5). An update to either V4L2 Loopback or Chromium seems to have fixed it, at least for me. /gst_loopback or initiate roscore followed by setting rosparam set Apr 5, 2021 · To use it, you need to install the v4l2loopback-dkms-package of your distro, and load the module with modprobe v4l2loopback To stream a video to this virtual camera, run: ffmpeg -re -i input. v4l2loopback can be built successfully. 2/Xavier. To list the configurable settings of a video device: $ v4l2-ctl -d /dev/video0 --list-ctrls. Oct 19, 2020 · I tested this on x86 and can save to file using the v4l2loopback with both VLC and OBS. I use VLC to play the With Ubuntu I can just sudo apt install it but with it seems like this kernel module isn't on the official fedora repositories, since when doing dnf search v4l2loopback it says that there are no packages with that name. I’ve encountered a problem where v4l2loopback doesn’t seem to be functioning correctly, which is preventing . 914648] v4l2loopback: loading out-of-tree module taints kernel. Normal (v4l2) applications will read these devices as if they were ordinary video devices, but the video will not be read from e. I am trying to create a virtual camera in Chrome using v4l2loopback where the incoming video is H264 via RTP. There are currently no Ubuntu versions that ship v4l2loopback version 0. Map the video stream: $ ffmpeg -re -i VIDEO_NAME. Oct 10, 2022 · v4l2loopback. 27. Tried that on Xavier R32. Aug 2, 2019 · Hi, It also works fine on r32. Webcam works well. Sep 27, 2020 · 1 Answer. set-caps <CAPS> ,/dev/videoX/. Indeed, the module builds and install sucessfully, but when using v4l2sink in gstreamer, a cascade of faults related to v4l_enum_fmt can be seen in kernel messages at setup (although it seems working after). 10-surface. 0 answers. insmod . If I use the raw stream from the logitech works fine: gst-launch-1. You can test by watching the stream with. Thank you very much! I only installed droidcam yesterday and was wondering why it wouldn't compile. Nov 16, 2020 · 1. example gst-launch pipeline Feb 11, 2024 · kernel-6. 1. Synonyms. Capture video from DSLR via gphoto2 (in my case gphoto2 --stdout v4l2loopback - a kernel module to create V4L2 loopback devices. 3 DKMS files Building for 5. 5) from GitHub - umlaeute/v4l2loopback: v4l2-loopback device configured v4l2loopback to provide with /dev/video2 2. this is the adapted patch for the actual stable droidcam adpted from the patch abouth. 22:56:04. v4l2loopback add complexity and latency. Getting it into Virtualbox doesn't work. The command above will create a virtual video device. 12. 5 and wf-recorder to record my screen on wayland. Create an SSL key pair for the V4L2Loopback driver. 2+dfsg1-1~ubuntu20. Jun 10, 2020 · Recently, I'm trying to capture video's raw data. Also don't ask for user input. However, each reboot requires that I run nix-shell -p linuxKernel. Other apps (VLC, ffplay, Skype, mplayer) can access the video feed just fine though. mp4. Dec 11, 2018 · or, if you really want to see it in vlc on Xavier, using v4l2loopback so that with vlc you’ll open it as video capture device: gst-launch-1. Steps to Reproduce. v4l2loopback, then v4l2loopback-ctl set-caps /dev/video<n> "YU12:<width>x<height>" in order for DroidCam not not fail to launch with the bellow error: Fatal: droidcam video device reported pixel format 34524742 (BGR4), expected No matter what command I use (*), when BlenderPlayer starts, it only shows the first frame of the v4l2loopback device. lsmod で存在確認. Use the provided ip '172. 0-rc6-273-tkg-eevdf Error! Mar 7, 2020 · ffmpeg Encoding Status. ls /dev/video*. Copy v4l2loopback. sudo cvlc --v4l2-dev=25 --v4l2-width=640 --v4l2-height=480 --v4l2-fps=30 --vout=mmal_vout v4l2:///dev/video25. The v4l2loopback devices have recently stopped showing in Zoom, Firefox & Brave. ERROR (dkms apport): kernel package linux-headers-5. vlc; rtsp; v4l2; v4l2loopback; nutron. They're sold at places like Amazon, it's just a little plastic box, one HDMI in and two HDMI out. 955: Processor: Intel(R) Core(TM) i7-4770K CPU @ 3. i think i did it, because i followed this guide step by step. ko devices=1 video_nr=2 exclusive_caps=1 was not working Commands: set-fps <FPS> ,/dev/videoX/. I can now start OBS first, to feed the loopback, and then Chromium recognizes that loopback straight away. When I try it in pixel format V4L2_PIX_FMT_GREY ffmpeg works very fine but vlc didn't work again. を実行するとビデオドライバが1つ増えていることが確認できます。. Nov 25, 2020 · I have been successfully using v4l2loopback, with v4l2sink in OBS, to "send" my obs preview panel output to Zoom. 50GHz. b) Streaming the output of OBS into a browser based conferencing system, like this: Found here, this also works. Yes. 0 videotestsrc shows videotestsrc only accepts paddings as video/x-raw. 858 views. I have the following error: Jan 2, 2021 · I’m trying to get to work my Jetson TX2s CSI camera module in Chromium browser. IP webcam stream delay with ffmpeg. Jan 3, 2021 · info: User added source 'VLC Video Source' (vlc_source) to scene 'Scene' [00007f9bb0003830] transform filter error: Unsupported pixel size 0 (chroma VAOP) [00007f9bb00021e0] main filter error: Failed to create video filter 'transform' [00007f9bb0029950] transform filter error: Format change is not allowed RICOH THETA Linux Live 360 Video Streaming with X. usage questions should be asked on "Unix&Linux". 04 still has v4l2loopback 0. Hello. environment: AMD64 2. I've registered properly using "insmod" and a video device is created at /dev/video1 (also I check through "lsmod" if module was loaded), but it isn't detected by any vl2-capable program as cheese, vlc or FlashPlayer. On my desktop, video0 is webcam. For runtime device control you need v4l2loopback version 0. insmod すると /dev/video4 が追加されたので、これに videotestsrc を書き込む。で、video4 を RTSP 配信する。VLC で RTSP アクセスして表示できれば Jan 16, 2024 · "Hi there, I’m currently running Ubuntu 20. 5. sudo modprobe v4l2loopback. 2) Is Ubuntu organising the files a slightly different way than expected? Am I missing a kernel extension? Jan 24, 2021 · DSLR connected to a v4l2loopback device is not recognised as a camera for video calls while a normal webcam is. I don't understand why this is happening. Building initial module for 5. This script works fine on Raspberry Pi but fails on Ubuntu with this error: V4L2 output device supports only a single raw video stream . Note that some applications, including the current desktop release of Discord may not support the virtual camera, showing a solid black square or failing to connect to it at all. To list all video devices: $ v4l2-ctl --list-devices. v4l2loopback provides a way for applications to act as a capture card would, looping back video output as input for use in other applications. 0 rtspsrc location=rtsp May 6, 2011 · Feeding the loopback device from ffmpeg or obs (with v4l2sink) works fine on the host. However, I get the same output. 781193] v4l2loopack driver version 0. Learn more…. Build and install on x86 Ubuntu 20. But with surveillance tools like Motion and ZoneMinder, the cam always defaults to 15FPS - independently of any FPS DroidCam has its own version of v4l2loopback, v4l2loopback-dc, which makes the app a little more user-friendly. Dec 11, 2020 · 仮想ビデオデ バイス を作成するコマンドは、. 0 videotestsrc ! v4l2sink device=/dev/video0. Jun 29, 2016 · Apparently, the queue gets bigger - which isn't necessarily a bad thing - when you use more gst elements and v4l2loopback doesn't negotiate the queue size correctly (this is all something I 'learned' yesterday while speaking to the devs on irc, so please forgive me if it is completely inaccurate). However under Linux you should be able to use v4l2loopback because we use API v4l2 to read the camera video stream. 0-11-lowlatency After a reboot, the virtual camera button and settings are showing up in OBS, and clicking the start button creates the following CLI output: Aug 29, 2015 · 9. Apr 11, 2022 · I have created Video0 device using V4l2loopback and used the following sample Git code V4l2Loopback_cpp as a application to stream jpg images from a folder sequential by altering some conditions in the code. 0-1ubuntu1. Nov 25, 2018 · where /dev/video1 is my v4l2loopback device. 04, on a Surface Pro 6 with kernel 5. 16-rockchip #19 SMP PREEMPT Fri Nov 24 19:34:54 CET 2017 armv7l armv7l armv7l GNU/Linux. To check the available video devices: $ v4l2-ctl --list-devices. I've tested the output from OBS-Studio in Qt V4L2 video capture utility Using gstreamer and OpenCV without v4l2loopback. 39 RICOH THETA Linux Live 360 Video Streaming with X. 7. 2. packages. Feb 5, 2022 · VLC media playerでRTSPを受信. This page contains changes which are not marked for translation. 0 -v filesrc location=test. です。. Mar 1, 2010 · Hello, I installed v4l2loopback as kernel module. launch this test program (even in background), it will initialize the * loopback device and keep it open so it won't loose the settings. If I type: vlc v4l2:///dev/video0 my webcam will open, and my face will show up in vlc player. v4l2loopback version: [12420. '/dev/video1') or a device number ('1'). I can connect the loopback device, it becomes visible in the guest but does not seem to work. 13. When I use vlc, ffmpeg or other programs, it did not work. May 7, 2019 · Check the "Used by" counter again, it increased by 2: v4l2loopback 49152 3; Close the browser tab, the "Used by" counter only decreases by one: v4l2loopback 49152 2; Try to unload v4l2loopback via "modprobe -r v4l2loopback", it will complain with modprobe: FATAL: Module v4l2loopback is in use. 6. 2. 52 -a -n. I tried doing it again, this is what i get: Loading new v4l2loopback-0. Ubuntu 22. Top users. 11-surface. 35-27-generic on Ubuntu 10. v4l2-loopback device . 916962] v4l2loopback driver version 0. kernel version: Linux tinkerboard 4. HDMI splitter is hardware. /v4l2loopback. However, when I try to execute . Then try to build the v4lloopback module. answered May 10, 2021 at 7:46. /gst_loopback from working. 8-rc6 and v4l2loopback-dkms fails to build against that Kernel. 1~ppa1 Kernel: 5. mp4 -map 0:v -f v4l2 /dev/video0 , where input. To that I have attached a USB video grabber dongle, where I have a Pioneer rearcam attached. 52' and automatically start an ffmpeg to expose the device to the OS. Resources. The 'Path to V4L2 Device' in Tools is shown as "/dev/video0" and its mode is RGB. So far I have done this: using Nvidia guidance on building v4l2loopback module (version 0. Aug 29, 2023 · Restart the machine. 75 KB. patch. 12 that has the old v4l2loopback-ctl that doesn't support adding and removing devices in runtime. I searched in google how to install it and I ended up downloading the . What I tested: - Using VLC, webcam and any v4l2loopback works OK. However, while Zoom sees a webcam which it identifies as "Dummy video device (0x0000)" the Zoom screen is totally black. Successfully merging a pull request may close this issue. After running (the same happens from source install) sudo apt-get install linux-generic (tempts to load videodev) sudo apt-get install v4l2loopback-dkms. 13, not even the next version currently in development. The standard v4l2loopback module is already available on most distros as v4l2loopback-dkms. by recording a video with ffmpeg via: ffmpeg -f v4l2 -framerate 5 -video_size 640x480 -i /dev/video0 test. 7 -k 6. GitHub. set-timeout-image <IMAGE> ,/dev/videoX/. ko を imx に持っていって以下を確認。 モジュール読み込み. sudo rmmod v4l2loopback. Create a video loopback device using v4l2loopback: sudo modprobe -r v4l2loopback && sudo modprobe v4l2loopback devices=1 video_nr={video_nr} card_label={label} exclusive_caps=1 Redirect network stream using ffmpeg to said loopback device and applying some filters to make it compatible with voip apps: ffmpeg -i rtsp://localhost:{port}/ -f v4l2 Mar 20, 2020 · I followed the steps to install v4l2loopback and obs-v4l2sink, updated the solution to get Skype to recognise the virtual device for the current version of gstreamer and so ended up with this code to start the video signal ( /dev/video2 is the device created by sudo modprobe v4l2loopback ): However Skype still doesn't recognise my device Apr 27, 2016 · Here are the steps I took to compile the v4l2loopback kernel module on a raspberry pi: Install kernel headers with rpi-source utility. Version 3. We would like to show you a description here but the site won’t allow us. v4l2loopback - a kernel module to create V4L2 loopback devices ===== this module allows you to create "virtual video devices" normal (v4l2) applications will read these devices as if they were ordinary video devices, but the video will not be read from e. Is there an equivalent toolset for OS X? How does one create multiple streams of videos on MacBook? Jul 24, 2020 · So I installed v4l2loopback (apt install v4l2loopback-dkms), then ran modprobe v4l2loopback. mp4 -map 0:v -f v4l2 /dev/video2. Sep 24, 2020 · I am using v4l2loopback v0. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Talent Build your employer brand Mar 20, 2023 · v4l2loopback is a linux kernel module to create V4L2 loopback devices. 20 • Windows • 38 MB. In "dmesg": [ 1678. My question here would be, can we set mjpeg as the format for v4l2loopback device? Mar 18, 2022 · $ modprobe v4l2loopback. I have used version wf-recorder 0. $ gst-launch-1. My main machine runs i3 as its window manager and hence sits on X11. 04 instance at aws and facing the current situation. I've been trying to utils/v4l2loopback-ctl delete <device> <device> can be given one more more times (to delete multiple devices at once). The plugin is easy to install - it is a binary module, the current version 1. listing devices ('list') ===== utils/v4l2loopback-ctl list {<flags>} <flags> any of the following flags may be present-e/--escape Apr 14, 2021 · In a jetson nano, I’ve created a video loopback device with the command: modprobe v4l2loopback exclusive_caps=1 and try to send to this device the result of decode an mp4 file, using the nvv4l2decoder element for gstreamer: gst-launch-1. V4l2loopback. 04; Jetson Nano with OpenCV and VLC on /dev/video0; Compile libuvc-theta on Jetson Nano - silent screencast Jul 28, 2020 · First you need to know the linux version you are running. Hello, I'm in Ubuntu 20. Download minimal-webrtc-gstreamer and install v4l2loopback. Feb 7, 2022 · sudo modprobe v4l2loopback video_nr = 3, 4, 7 card_label = "device number 3", "the number four", "the last one" # Remove a virtual device sudo v4l2loopback - ctl delete / dev / video7 Command line. さらに、複数ビデオデ バイス を作成する場合には、. playing a static video file out to /dev/video1 works well. Fix format for the device (using GStreamer caps), so it will be maintained until reset Mar 7, 2011 · Synopsis: V4l2loopback is sending duplicate timestamps. Then run. VLC for Windows. DroidCam works with the standard v4l2loopback module, so installing v4l2loopback-dc is optional. I haven’t figured out how to save to file directly with gstreamer. linux_latest_libre. Here is my log with audio failure: Code: 22:56:04. 1 loaded. 3. Jan 20, 2021 · I’m playing around with using DSLR cameras as webcams with gphoto (CLI to cameras over USB) and v4l2loopback (dummy video devices), which works with OBS but neither Skype nor VLC which will e… Feb 6, 2017 · Under Windows the driver can only be openCV, and it's slow. When i try to play it back with VLC , nothing happens. ). (Ubuntu only) If you have enabled the Extensible Firmware Interface (EFI) and UEFI Secure Boot on the Ubuntu virtual machine, configure signing settings for the V4L2Loopback driver. Alternatively, you can use cameractrls : $ cameractrls -c brightness=128. ko in the source directory. For that kernel-version, you need the kernel development headers. mp4 ! qtdemux ! h264parse ! nvv4l2decoder ! nvvidconv ! video/x-raw, format=I420 ! v4l2sink device=/dev/video0 however, it crashes v4l2loopback is a linux kernel module to create virtual video devices. sudo modprobe v4l2loopback Done v4l2loopback-dkms is already the newest version (0. 187. the kernel is the core component of your operating system. If step 2 is successful, you should have v4l2loopback. Aug 2, 2014 · modprobe v4l2loopback devices=1 label="OBSoutput" exclusive_caps=1. WindowsのVLC media playerでRTSPを受信してみます。 [メディア] - [ネットワークストリームを開く] からRTSPのURLを指定して受信します。 表示されました。 カメラがかなり古いので、Motion JPEG形式での配信となっています。 Then you need to send the video stream to the device /dev/videoN (where N is the number that corresponds to the freshly created device - probably the highest number) using a program like ffmpeg. Apr 11, 2021 · v4l2loopback-dkms 0. v4l-utils installs a command line tool, v4l2-ctl. I can watch the video when I connect VLC to /dev/video1. Compile v4l2loopback source. Jun 2, 2020 · The program works fine! When I push out the image over /dev/video6 with the pixel format RGB24, it works fine when I use another programm and fetch the stream with opencv. こちらを実行してから、. I'm trying to use an unused Jul 12, 2020 · The solution. 1 and this fork as it adds the option to set the framerate. But the code read images as 24Bit RGB image and send it Video0 device which is fine ,because the image run like a proper video on VLC video Jun 16, 2012 · vlc; rtsp; v4l2; v4l2loopback; nutron. This works fine e. g. 5-1 obs-studio 26. 8. ffmpeg: kmsgrab to v4l2 loopback device. Currently trying to install v4l2loopback into a ubuntu 18. Set timeout on device, and optionally the placeholder picture, instead of default null frame. I'm trying to install v4l2loopback module to use my android phone as a… Feb 12, 2024 · Description I have DroidCam and v4l2loopback installed and I can use them. v4l2sink を試す. gopro webcam -i 172. 10. I have has some success in getting a GStreamer test video recognized in Chrome with MediaStreamTrack. Could anybody give me some tips on what i am doing wrong here Feb 2, 2017 · A possibility to stream to the v4l2loopback looks like a must for this kind of software on linux. I tried to use Jan 20, 2021 · The obs-plugin method does not need v4l2loopback, so you can test this independent of the virtual camera. All host applications that I tested it with work fine and can read the video back. I get smooth playback. So to have a good performance we recommend using Linux with v4l2loopback instead of Windows with openCV, but we cannot guaranty that because have have never conducted any Aug 7, 2019 · vlc; rtsp; v4l2; v4l2loopback; nutron. @snafu666. 0. a capture card but instead it is generated by another application. 39 No matter what command I use (*), when BlenderPlayer starts, it only shows the first frame of the v4l2loopback device. When I run . Enter /dev/video0 as the “Video Device Name”, and click the “Play” button. I am new to gstreamer and i am poking a little bit in the dark there. mp4 is your input video file and /dev/video0 corresponds to the virtual device created by v4l2loopback vlc; v4l2loopback; user3816638. I already read that the v4l2loopback device must be controlled via regular Linux driver commands (open, ioctl, write etc. v4l2loopback - a kernel module to create V4L2 loopback devices. Original workaround is as follows: v4l2loopback - a kernel module to create V4L2 loopback devices. c. Distribution (+version): No LSB modules are available. Sorted by: 0. Currently I am unable to get anything other than 60fps. Nov 12, 2018 · or, if you really want to see it in vlc on Xavier, using v4l2loopback so that with vlc you’ll open it as video capture device: gst-launch-1. This works in that I can open /dev/video0 in VLC (Media > Open Capture Device> open /dev/video0) and see the stream. * 2. However, I can confirm the loopback is viewable in VLC. It's hard to tell where to start digging for the cause. It may break easily through upgrades, though. 04 src from github; make; make install; modprobe v4l2loopback gst-launch-0. . In order to capture the desktop and forward it to /dev/videoN with ffmpeg, you can use the following command line: ffmpeg -probesize 100M -framerate 15 Feb 7, 2022 · Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have v4l2loopback - a kernel module to create V4L2 loopback devices. Depending on application i get "no such Nov 15, 2023 · But I can't install the v4l2loopback kernel module: root@trainwatching:~# apt install v4l2loopback-dkms Reading package lists Done Building dependency tree Done Reading state information Done The following NEW packages will be installed: v4l2loopback-dkms 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. That is, at the same time 2 VLCs must show the image from video99. 11-surface is not supported. 955: Processor: 8 logical cores. Contribute to umlaeute/v4l2loopback development by creating an account on GitHub. 0+0,0 -f v4l2 /dev/video0. zip from the master branch of this repo https://github 188 lines (146 loc) · 4. In you package manager, search for 'kernel development headers' (or 'kernel development'). 81 views. 1 works at least with my Fedora 33 version of obs. 04 on a Jetson device in an ARM environment. Run the following command. org Video Driver and VLC using v4l2loopback r/AskPhotography • Client asked for Premium Photo and now they say it's not premium enough. First Message ==> dkms install --no-depmod v4l2loopback/0. 43; asked Dec 11, 2015 at 15:38. See v4l2loopback usage examples. It seems like it is using gstreamer videotestsrc as the pipeline video src for setting the caps, and gst-inspect-1. Feed the video device with data according to the settings specified * below: size, pixelformat, etc. How To Compile and Install Software. a Linux kernel is not compatible with a Darwin kernel (which is what runs your OSX) Share. 0 -v v4l2src ! "video/x-raw,format=YUY2,width=640,height=480,framerate=30/1" ! queue ! v4l2sink device=/dev/video1 sync=0 Use the provided device 'enxenx9245589250e7' and do not ask for user input. 0 and trying out Kernel 6. Now, open the VLC application, select the Media Menu -> Capture Device (Ctrl+c). Just start VLC to preview the output you'll get from the Camera. I've been trying to Jul 9, 2020 · I have a Raspberry PI 4 with a Raspberry 7" touch screen, where buster is installed with Ffmpeg, Gstreamer, and v4l2loopback-dkms. Sep 18, 2022 · v4l2loopback-dkms makes the video stream available to applications as a virtual webcam; v4l2loopback-utils (optional) adds a commandline utility for managing v4l2loopback; linux-headers-$(uname -r) provides the infrastrucure we need for signing the v4l2 kernel modules; vlc (optional) gives us an easy way to preview the camera stream 2. this allows you for instance to apply apply some nifty video effects on . 2 votes. /gst_viewer, the video display appears on my computer. ko to /lib/modules (I believe just /lib/modules directory works, but if that doesn Jun 27, 2014 · The problem came when I tried to use gstreamer with v4l2loopback. Don't know which it was, because they both had updates and now it works. 1 vote. 955: Physical Memory: 7663MB Total. org Video Driver and VLC using v4l2loopback Mar 6, 2019 · In Linux, I can use v4l2loopback to create virtual devices and use them as video inputs/outputs. either specify a device name (e. May 29, 2020 · Working with v4l2loopback devices I can run these two virtual devices: a) running the preview image from a Canon DSLR via USB through v4l2loopback into OBS: Found here, and it works. However, I need to run both a) and b) at the same VLC media player. txt. 11. 9. But I get a error: v4l2 stream error: **cannot start streaming: Device or resources busy** If I turn off the first VLC instance, then the second VLC instance starts working normally. 13 or higher. I am looking to reduce the framerate of the video stream as read by my browser. VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols. - Using Blender, webcam and another capture device (EasyCap), also I get smooth playback of both devices. VLC Dec 3, 2016 · The cam is doing great in low light situations, if FPS can be reduced to 10 FPS or even 5 FPS. Improve this answer. /* * How to test v4l2loopback: * 1. This module allows you to create "virtual video devices". 0 rtspsrc location=rtsp Jun 13, 2017 · As well the example code from the v4l2loopback page, for e. Dec 20, 2023 · Now I want to run a copy of VLC and view video99 again. Pull the 11. 1 launching module with insmod v4l2loopback. I compiled the v4l2loopback module from source . the v4l2loopback (which is an abbreviation for "video for linux (version 2) loopback") integrates tightly with the linux kernel . On the cli, do uname -a. If your objective is to use OpenCV, consider using gstthetauvc instead. 0 loaded. I am currently on Arch with KDE Plasma 6. A "Dummy video device" should be available, for simplicity, we will call this device /dev/video2. 39; asked Apr 25, 2021 at 21:51. I suspect the gstreamer pipeline is not correct. getSources: $ sudo modprobe v4l2loopback. 857 views. Then I ran the ffmpeg command: ffmpeg -f x11grab -framerate 25 -video_size 1280x720 -i :1. Maybe someone on this forum knows how to save it directly to file from within gst_viewer. Download VLC. ko. Sep 19, 2023 · v4l2loopback is a linux kernel module to create V4L2 loopback devices. [12420. Aug 16, 2022 · topic:documentation. ue yx ex nq hh ue tc en hu cz