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Questions tagged [v4l2loopback]

v4l2loopback is a linux kernel module to create V4L2 loopback devices. usage questions should be asked on "Unix&Linux".

If you are having troubles using the v4l2loopback module, you probably should ask on Unix & Linux instead.

Upstream: https://github.com/umlaeute/v4l2loopback

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GStreamer Playbin video speed is too fast

I am trying to create virtual web camera using GStreamer and v4l2loopback. The problem is that I want to use Playbin but the video speed is too fast when I use it. For instance, it happens when I execute the following command: gst-launch-1.0 -v…
Danylo Zatorsky
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directing gstreamer NV12 video to v4l2loopback sink

I want to direct a video with the NV12 pixel format to a v4l2loopback device but I failed in all my attempts to do so. I tried this pipeline gst-launch-1.0 videotestsrc ! videoconvert ! video/x-raw,format=NV12 ! v4l2sink device=/dev/video1 and…
وليد تاج الدين
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making linux virtual device driver work with udev

I'm trying to fix the v4l2loopback driver to work with udev (to have udev automatically assign stable device names). The problem seems to be, that the device driver doesn't expose a few fields that are seemingly required by udev to properly work…
umläute
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GStreamer decklinksrc doesn't work with v4l2loopback

I have Blackmagic intensity pro capture card and GoPro Hero 3 connected to it with HDMI. I have installed v4l2loopback to /dev/video0. Trying to capture video with decklinksrc to v4l2sink: gst-launch decklinksrc mode=8 connection=1 !…
user3683896
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DELL Precision 5470, Intel MIPI Camera not working

my Dell Precision 5470 webcam is not working on my Linux Mint 21.2 laptop. Some months ago it worked, but now, probably cause by some updates, it doesn't work. I tried some fixes that I found on internet (like this one described in this link…
Daniele B.
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Feeding content of an X-Window to a virtual camera

I want to feed a virtual webcam device from an application window (under Linux/Xorg). I have so far just maximised the window and then used ffmpeg to grab the whole screen like this: ffmpeg \ -f x11grab -framerate 15 -video_size 1280x1024 -i…
Ingo
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Raspberry Pi Camera Module undetectable by common applications

I bought a 5 mp camera module available at Amazon for my raspberry pi 4 2 gb model. Then I configured it for use and tested it with raspistill and raspivid, it is working as expected. But since it is a module connected to the CSI port and not a USB…
Popcorn Movies
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