E-learning/teaching: Difference between revisions

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This page documents the setup of a Linux system for screencasting
This page documents the setup of a Linux system for screencasting


== Show Keyboard commands ==
==On Screen Display==
=== Show Keyboard commands ===
When showing software it's usefull for the students to see which keyboard shortcuts are pressed. This on screen display (OSD) can be installed like this:
When showing software it's usefull for the students to see which keyboard shortcuts are pressed. This on screen display (OSD) can be installed like this:
   sudo apt install screenkey
   sudo apt install screenkey
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[[File:Screenkey.png]]
[[File:Screenkey.png]]
=== Show Mouse Clicks ===
== Stream Canon 5D via USB ==
== Stream from OBS to a virtual camera source ==
We can't stream directly from OBS into Jitsi, BigBlueBitton, Google Meet, Skype, etc. For this wee need a virtual camera source.
  sudo modprobe v4l2loopback devices=1 video_nr=10 card_label="OBS Cam" exclusive_caps=1
  sudo apt install qtbase5-dev
  git clone --recursive https://github.com/obsproject/obs-studio.git
  git clone https://github.com/CatxFish/obs-v4l2sink.git
  cd obs-v4l2sink
  mkdir build && cd build
  cmake -DLIBOBS_INCLUDE_DIR="../../obs-studio/libobs" -DCMAKE_INSTALL_PREFIX=/usr ..
  make -j4
  sudo make install
Source: https://srcco.de/posts/using-obs-studio-with-v4l2-for-google-hangouts-meet.html
== Wishlist ==
https://www.blackmagicdesign.com/products/intensitypro4k