17.10desktop-recordingscreencast
Ubuntu Desktop Guide > Tips & tricks says that we can start and stop a screencast by pressing Ctrl+Alt+Shift+R. It works. But it automatically stops at 30s.
Is there a default settings somewhere for that? Or is it a bug?
Before on Ubuntu 17.04 I used gtk-recordmydesktop but now it won't launch. I tried simplescreenrecorder and vokoscreen but for some reason the screen goes black in the result file. The cursor is visible though.
Adds an easy to use graphical icon on the GNOME toolbar to make a pleasure use and configure the audio and video capture and screencast application recordMyDesktop.
As mentioned at 20.04: Can't install gtk-recordmydesktop and on the package search, the package is not available on the main repository anymore, and sudo apt install gtk-recordmydesktop fails. I'm not sure why the http://apt.ubuntu.com/p/gtk-recordmydesktop link seems to work, maybe it installs an older version. But this indicates that the software is not being actively supported.
This is the non-GUI backend of recordmydesktop, and it is still available in 20.04:
sudo apt install recordmydesktop
recordmydesktop --on-the-fly-encoding
This will record until you stop the program on the terminal e.g. with Ctrl + C.
--on-the-fly-encoding encodes the output immediately; without it you need to wait for a possibly long time at the end for the encoding to be done. I haven't seen any significant downsides to that option yet, likely it will just take a bit more of CPU resources, but it is generally worth it.
It should be able to do everything that gtk-recordmydesktop does, but it is a bit harder to learn as you have to deal with the command lines.
You can set a stop recording shortcut e.g. with:
recordmydesktop --stop-shortcut=Control+s
You can select to record a single window as shown at: How can I get the value of Window ID?
recordmydesktop --windowid `xwininfo | grep 'id: 0x' | grep -Eo '0x[a-z0-9]+'`
This will allow you to first select the window with a mouse click, and it starts recording after you click.
How to record sound output with it: https://unix.stackexchange.com/questions/3490/how-can-i-record-the-sound-output-with-gtk-recordmydesktop
A screen capture enabling you to capture videos off your X-Window desktop for illustration or documentation purposes. It is intended to be a standards-based alternative to tools like Lotus ScreenCam.
Video can be saved in MPEG or AVI files format.
An alternative is to use this Gnome Extension EasyScreenCast, it uses gnome-shell's screencast
It handles audio and many more options
You need to choose what audio source to record from, as shown here:
Best Answer
Ubuntu 17.10 by default uses Wayland server. Many application which are not yet completely compatible with Wayland may fail to work under a Wayland session.
You may try to switch to an Xorg session to make the applications work again.