Use DSLR Manjaro 20.1

Steps:

  1. Install the linux-headers for your Kernel (same as your kernel version)
    sudo pacman -S linux-headers

  2. Install gphoto2 and its dependencies (if v4l2 failed to install check step 1.)
    sudo pacman -S gphoto2 v4l-utils v4l2loopback-dkms ffmpeg

  3. Add Camera module to the modprobe flags
    sudo modprobe v4l2loopback exclusive_caps=1 max_buffers=2

  4. Allow DSLR to boot with the system

    sudo nano /etc/modprobe.d/dslr-webcam.conf

    # Module options for Video4Linux, needed for our DSLR Webcam
    alias dslr-webcam v4l2loopback
    options v4l2loopback exclusive_caps=1 max_buffers=2

  5. Try capture
    gphoto2 --capture-image-and-download

  6. Streaming to /dev/video0
    gphoto2 --stdout --capture-movie | ffmpeg -i - -vcodec rawvideo -pix_fmt yuv420p -threads 0 -f v4l2 /dev/video0

  7. Create script/allow execution of the script - so streaming is easier than remembering a full Linux command -

    nano ~/script/dslr.sh

    #!/bin/bash
    echo "Streaming to /dev/video0"
    gphoto2 --stdout --capture-movie | ffmpeg -i - -vcodec rawvideo -pix_fmt yuv420p -threads 0 -f v4l2 /dev/video0 -hwaccel nvdec -c:v mjpeg_cuvid

    chmod 755 ~/script/dslr.sh

Ref: https://www.crackedthecode.co/how-to-use-your-dslr-as-a-webcam-in-linux/


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