Xubuntu 20.04: Installing Blackmagic Decklink drivers

[peter_b]

1. Download the Decklink drivers from Blackmagic website.
https://www.blackmagicdesign.com/support/

The file is called something like this:

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Blackmagic_Desktop_Video_Linux_12.1.tar.gz

2. Extract the tar.gz file.

3. Install the .deb packages.
In the subfolder of the extracted Blackmagic Desktop Video Linux folder, enter the following subfolder: deb/x86_64 (for 64bit systems, otherwise "deb/i386"):

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$ cd deb/x86_64
$ sudo apt install libegl1-mesa
$ sudo dpkg -i desktopvideo_12.1a9_amd64.deb desktopvideo-gui_12.1a9_amd64.deb mediaexpress_3.7a7_amd64.deb

Should work.

[peter_b]

If installing the packages throws the following error:

Setting up desktopvideo-gui (12.1a9) ...
dpkg: dependency problems prevent configuration of mediaexpress:
mediaexpress depends on libegl1-mesa (>= 7.8.1) | libegl1-x11; however:
Package libegl1-mesa is not installed.
Package libegl1-x11 is not installed.

... install "libegl1-mesa" manually before running "dpkg -i". The mentioned "libegl1-x11" seems to be an alternative option. On my system it was sufficient to install "-mesa". The "libegl1-x11" package wasn't even available/found on Xubuntu 20.04.3 (maybe different distro?)