OBS does not recognize Blackmagic Capture Card as a Video Source
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I am trying to configure my [Blackmagic DeckLink Quad HDMI Recorder](https://www.blackmagicdesign.com/products/decklink/techspecs/W-DLK-36) to work with OBS on Arch Linux.
On Windows, I could go to [their website](https://www.blackmagicdesign.com/support/family/capture-and-playback) , install their Desktop Video 14.5 Program. Once the drivers were installed, OBS would recognize the device.
Linux wasn't as straightforward. I downloaded [14.4.1](https://swr.cloud.blackmagicdesign.com/DesktopVideo/v14.4.1/Blackmagic_Desktop_Video_Linux_14.4.1.tar.gz?verify=1748017031-8xieTBOzdt4rQ%2FPasifFSs1vESAzwvSPyHGl7hgaJv0%3D) because they did not provide a Linux version for 14.5.
I unzipped the
.tar.tar
which contained
for Debian,
for Fedora, and
for miscellaneous systems. I navigated to ./other/x86_64
and unzipped -14.4.1a4-x86_64.tar.gz
. I then moved to ./usr/bin
, where I found the executable
.
When I ran it I got Desktop Video Device Detected
. The files in the folder were subsequently found in my actual /usr
and /etc
, so the installer likely did its job. However even after a reboot OBS still won't recognize the device. Neither Capture Device (V4L2)
nor Capture Device (Pipewire) (BETA)
display my capture device as an option.
> lspci | grep Blackmagic
05:00.0 Multimedia video controller: Blackmagic Design DeckLink Quad HDMI Recorder
> lsmod | grep blackmagic
blackmagic_io 2420736 8
> dkms status -m blackmagic-io -k uname -r
blackmagic-io/14.4.1a4, 6.14.7-arch2-1, x86_64: installed
> sudo modprobe blackmagic-io
> sudo dkms build -m blackmagic-io -v 14.4.1a4
Module blackmagic-io/14.4.1a4 already built for kernel 6.14.7-arch2-1 (x86_64), skip. You may override by specifying --force.
I am not sure what I am supposed to do now, as the OS does recognize the device.
Asked by Hyunbin Yoo
(175 rep)
May 23, 2025, 04:34 PM