how to change screencast duration in gnome3 screen recorder
- Open the
dconf-editor
- Find
org.gnome.settings-daemon.plugins.media-keys
in the tree of settings - Find the setting named
max-screencast-length
(the default value is 30 seconds) - Change it to 600 seconds for 10 minutes (10 * 60 seconds), or 1800 seconds for 30 minutes (30 * 60 seconds)
Open a terminal by pressing Ctrl+Alt+T and type:
gsettings set org.gnome.settings-daemon.plugins.media-keys max-screencast-length 1800
Which will set the maximum screencast length to 1800 seconds, which is what you want! ;-)