E-learning/teaching - Revision history

Max at 20:20, 31 May 2020

2020-05-31T20:20:23Z

← Older revision		Revision as of 20:20, 31 May 2020
Line 16:		Line 16:
	There is a feature branch in the screenkey git which implements that, hopefully it will be merged into master once you read this.		There is a feature branch in the screenkey git which implements that, hopefully it will be merged into master once you read this.

	== ~~Stream Canon 5D via USB~~ ==		== Using v4l2loopback to stream in and out of OBS ==
	~~modprobe~~ v4l2loopback		Load the v4l2loopback kernel module and create two devices.
	~~gphoto2 --stdout --capture-movie \| gst-launch-1~~.~~0 fdsrc fd=0 ! decodebin name=dec ! queue ! videoconvert ! tee ! v4l2sink device=/dev/video0~~

	~~[https://stackoverflow.com/questions/12278688/canon-dslr-video-loop-back-using-~~v4l2loopback~~-and-edsdk-liveview Source]~~		modprobe v4l2loopback devices=2 video_nr=10,9 card_label="OBS Output","Canon 5D" exclusive_caps=1

	== Stream ~~from OBS to a virtual camera source~~ ==		=== Stream Canon 5D via USB ===
	~~We can't stream directly from OBS into Jitsi, BigBlueBitton, Google Meet, Skype, etc. For this wee need a virtual camera source~~.		gphoto2 --stdout --capture-movie \| gst-launch-1.0 fdsrc fd=0 ! decodebin name=dec ! queue ! videoconvert ! tee ! v4l2sink device=/dev/video9

	~~modprobe~~ v4l2loopback ~~devices=1 video_nr=10 card_label="OBS Cam" exclusive_caps=1~~		[https://stackoverflow.com/questions/12278688/canon-dslr-video-loop-back-using-v4l2loopback-and-edsdk-liveview Source]

	to install follow these steps:		=== Stream from OBS to a virtual camera source ===
			We can't stream directly from OBS into Jitsi, BigBlueBitton, Google Meet, Skype, etc. So we are using v4l2loopback for this.
			To install the v4l2sink for OBS follow these steps:

	apt install qtbase5-dev		apt install qtbase5-dev
Line 37:		Line 38:
	make -j4		make -j4
	make install		make install

			In OBS, go to Menu → Tools → V4L2 Video Output

			[[File:V4L2 Video Output.png]]

			In BigBlueButton (or any other videoconferencing service) Select the virtual "OBS Output" as a video source.

	[https://srcco.de/posts/using-obs-studio-with-v4l2-for-google-hangouts-meet.html Source]		[https://srcco.de/posts/using-obs-studio-with-v4l2-for-google-hangouts-meet.html Source]



	== Wishlist ==		== Wishlist ==

	https://www.blackmagicdesign.com/products/intensitypro4k		https://www.blackmagicdesign.com/products/intensitypro4k

Max: /* Show Mouse Clicks */

2020-05-28T21:55:08Z

Show Mouse Clicks

← Older revision		Revision as of 21:55, 28 May 2020
Line 14:		Line 14:

	=== Show Mouse Clicks ===		=== Show Mouse Clicks ===
			There is a feature branch in the screenkey git which implements that, hopefully it will be merged into master once you read this.
	~~no solution yet~~

	== Stream Canon 5D via USB ==		== Stream Canon 5D via USB ==

Max: /* Show Keyboard commands */

2020-05-28T21:53:50Z

Show Keyboard commands

← Older revision		Revision as of 21:53, 28 May 2020
Line 3:		Line 3:
	==On Screen Display==		==On Screen Display==
	=== Show Keyboard commands ===		=== Show Keyboard commands ===
	When showing software it's usefull for the students to see which keyboard shortcuts are pressed. You can use screenkey, an on screen display (OSD) which should be installed like this: [https://gitlab.com/screenkey/screenkey/-/issues/111 ~~32767~~ (Don't install from repository)]		When showing software it's usefull for the students to see which keyboard shortcuts are pressed. You can use screenkey, an on screen display (OSD) which should be installed like this: [https://gitlab.com/screenkey/screenkey/-/issues/111 (Don't install from repository)]
	git clone https://gitlab.com/screenkey/screenkey.git		git clone https://gitlab.com/screenkey/screenkey.git
	cd screenkey		cd screenkey

Max: /* Show Keyboard commands */

2020-05-28T21:53:40Z

Show Keyboard commands

← Older revision		Revision as of 21:53, 28 May 2020
Line 3:		Line 3:
	==On Screen Display==		==On Screen Display==
	=== Show Keyboard commands ===		=== Show Keyboard commands ===
	When showing software it's usefull for the students to see which keyboard shortcuts are pressed. ~~If your~~ screen ~~resolution is smaller than~~ [https://gitlab.com/screenkey/screenkey/-/issues/111 32767 Don't install from repository] ~~in either direction you can use screenkey, an on screen display (OSD) which should be installed like this:~~		When showing software it's usefull for the students to see which keyboard shortcuts are pressed. You can use screenkey, an on screen display (OSD) which should be installed like this: [https://gitlab.com/screenkey/screenkey/-/issues/111 32767 (Don't install from repository)]
	git clone https://gitlab.com/screenkey/screenkey.git		git clone https://gitlab.com/screenkey/screenkey.git
	cd screenkey		cd screenkey

Max: /* Show Keyboard commands */

2020-05-28T21:52:15Z

Show Keyboard commands

← Older revision		Revision as of 21:52, 28 May 2020
Line 6:		Line 6:
	git clone https://gitlab.com/screenkey/screenkey.git		git clone https://gitlab.com/screenkey/screenkey.git
	cd screenkey		cd screenkey
	~~./screenkey # to run~~		sudo ./setup.py install
	sudo ./setup.py ~~install # to~~ install		will install the screenkey application. Run with screenkey
	will install the screenkey application.

	[[File:Screenkey.png]]		[[File:Screenkey.png]]

Max: /* Show Keyboard commands */

2020-05-28T21:50:23Z

Show Keyboard commands

← Older revision		Revision as of 21:50, 28 May 2020
Line 3:		Line 3:
	==On Screen Display==		==On Screen Display==
	=== Show Keyboard commands ===		=== Show Keyboard commands ===
	When showing software it's usefull for the students to see which keyboard shortcuts are pressed. If your screen resolution is smaller than [https://gitlab.com/screenkey/screenkey/-/issues/111 32767 ~~pixels~~] in either direction you can use screenkey, an on screen display (OSD) which be installed like this:		When showing software it's usefull for the students to see which keyboard shortcuts are pressed. If your screen resolution is smaller than [https://gitlab.com/screenkey/screenkey/-/issues/111 32767 Don't install from repository] in either direction you can use screenkey, an on screen display (OSD) which should be installed like this:
	~~apt~~ install ~~screenkey~~		git clone https://gitlab.com/screenkey/screenkey.git
	will install the screenkey application. ~~Run it from the taskbar:~~		cd screenkey
			./screenkey # to run
			sudo ./setup.py install # to install
			will install the screenkey application.

	[[File:Screenkey.png]]		[[File:Screenkey.png]]

Max: /* Stream from OBS to a virtual camera source */

2020-05-27T21:45:19Z

Stream from OBS to a virtual camera source

← Older revision		Revision as of 21:45, 27 May 2020
Line 24:		Line 24:
	We can't stream directly from OBS into Jitsi, BigBlueBitton, Google Meet, Skype, etc. For this wee need 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		modprobe v4l2loopback devices=1 video_nr=10 card_label="OBS Cam" exclusive_caps=1
	~~sudo~~ apt install qtbase5-dev
			to install follow these steps:

			apt install qtbase5-dev
	git clone --recursive https://github.com/obsproject/obs-studio.git		git clone --recursive https://github.com/obsproject/obs-studio.git
	git clone https://github.com/CatxFish/obs-v4l2sink.git		git clone https://github.com/CatxFish/obs-v4l2sink.git
Line 32:		Line 35:
	cmake -DLIBOBS_INCLUDE_DIR="../../obs-studio/libobs" -DCMAKE_INSTALL_PREFIX=/usr ..		cmake -DLIBOBS_INCLUDE_DIR="../../obs-studio/libobs" -DCMAKE_INSTALL_PREFIX=/usr ..
	make -j4		make -j4
	~~sudo~~ make install		make install

	~~Source: https://srcco.de/posts/using-obs-studio-with-v4l2-for-google-hangouts-meet.html~~



			[https://srcco.de/posts/using-obs-studio-with-v4l2-for-google-hangouts-meet.html Source]

	== Wishlist ==		== Wishlist ==

	https://www.blackmagicdesign.com/products/intensitypro4k		https://www.blackmagicdesign.com/products/intensitypro4k

Max: /* Stream Canon 5D via USB */

2020-05-27T21:44:10Z

Stream Canon 5D via USB

← Older revision		Revision as of 21:44, 27 May 2020
Line 19:		Line 19:
	gphoto2 --stdout --capture-movie \| gst-launch-1.0 fdsrc fd=0 ! decodebin name=dec ! queue ! videoconvert ! tee ! v4l2sink device=/dev/video0		gphoto2 --stdout --capture-movie \| gst-launch-1.0 fdsrc fd=0 ! decodebin name=dec ! queue ! videoconvert ! tee ! v4l2sink device=/dev/video0

	~~Source:~~ https://stackoverflow.com/questions/12278688/canon-dslr-video-loop-back-using-v4l2loopback-and-edsdk-liveview		[https://stackoverflow.com/questions/12278688/canon-dslr-video-loop-back-using-v4l2loopback-and-edsdk-liveview Source]

	== Stream from OBS to a virtual camera source ==		== Stream from OBS to a virtual camera source ==

Max: /* Stream Canon 5D via USB */

2020-05-27T21:43:44Z

Stream Canon 5D via USB

← Older revision		Revision as of 21:43, 27 May 2020
Line 17:		Line 17:
	== Stream Canon 5D via USB ==		== Stream Canon 5D via USB ==
	modprobe v4l2loopback		modprobe v4l2loopback
	gphoto2 --stdout --capture-movie \| gst-launch-0~~.10~~ fdsrc ! ~~decodebin2~~ name=dec ! queue ! ~~ffmpegcolorspace~~ ! v4l2sink device=/dev/video0		gphoto2 --stdout --capture-movie \| gst-launch-1.0 fdsrc fd=0 ! decodebin name=dec ! queue ! videoconvert ! tee ! v4l2sink device=/dev/video0

	Source: https://stackoverflow.com/questions/12278688/canon-dslr-video-loop-back-using-v4l2loopback-and-edsdk-liveview		Source: https://stackoverflow.com/questions/12278688/canon-dslr-video-loop-back-using-v4l2loopback-and-edsdk-liveview

Max: /* Show Keyboard commands */

2020-05-27T21:42:38Z

Show Keyboard commands

← Older revision		Revision as of 21:42, 27 May 2020
Line 3:		Line 3:
	==On Screen Display==		==On Screen Display==
	=== Show Keyboard commands ===		=== 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. If your screen resolution is smaller than [https://gitlab.com/screenkey/screenkey/-/issues/111 32767 pixels] in either direction you can use screenkey, an on screen display (OSD) which be installed like this:
	~~sudo~~ apt install screenkey		apt install screenkey
	will install the screenkey application. Run it from the taskbar:		will install the screenkey application. Run it from the taskbar: