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PolySaken
Asked: 2020-05-05 13:02:51 +0800 CST

Droidcam unable to find dev/video0

  • 772

After recently installing a system update droidcam will no longer open and fails with the message: Device not found (/dev/video[0-9]). Did you install it?

Ubuntu 18.04.4 LTS

droidcam

3 Answers

  1. Best Answer

    I don't really know what happened with previous droidcam source I was using to install it on 19.10 a few weeks ago. But now I've found a different source which works in my case on 20.04.

    Steps I was using which could not be required if you've done them previously. It is better to run the next command:

    $ sudo apt install v4l2loopback-utils v4l2loopback-dkms cmake nasm yasm pkg-config libgtk2.0-dev
$ sudo modprobe v4l2loopback
$ v4l2-ctl --list-devices     # check if you have dummy video devices
Dummy video device (0x0000) (platform:v4l2loopback-000):
/dev/video0

    Build required dependencies:

    cd ~/Downloads
git clone https://github.com/libjpeg-turbo/libjpeg-turbo.git
cd libjpeg-turbo
mkdir build && cd build
cmake -G"Unix Makefiles" ../
make && sudo make install

    Build droidcam from sources:

    cd ~/Downloads
git clone https://github.com/aramg/droidcam.git
cd droidcam/linux
make
sudo ./install-dkms

    Run it:

    droidcam &
ffplay /dev/video1    # in your case it could be a different video device
    • 12

  2. I disabled secure boot - see here https://wiki.ubuntu.com/UEFI/SecureBoot/DKMS

    Then reinstalled Droidcam

    gcc make linux-headers-`uname -r`

cd /tmp/
wget https://files.dev47apps.net/linux/droidcam_latest.zip
echo "957e5ff9e1762d0e912ee43a5f9083bb droidcam_latest.zip" | md5sum -c --
# OK?
unzip droidcam_latest.zip -d droidcam && cd droidcam
sudo ./install
    • 4

  3. I think DroidCam looks for v4l2loopback_dc I get this error after updating the kernel. After this, the module is no longer in the folder of the current kernel.

    When I get this error I usually resolve it by uninstalling and reinstalling DroidCam like this: https://www.dev47apps.com/droidcam/linuxx/

    Reference: Reddit- Suddenly, Droidcam ceases working

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