HowTo Create A Screencast - Revision history

Paul Blankenbaker: /* Capturing */

2011-08-15T12:08:00Z

Capturing

← Older revision		Revision as of 08:08, 15 August 2011
Line 60:		Line 60:
	* There are numerous ''Advanced Options'' that can be adjusted before starting your capture. If you are only intending on capturing a single window, you may want to consider turning off the ''Include Window Decorations'' option (especially if your window contains a Virtual Machine, VNC, or RDP session).		* There are numerous ''Advanced Options'' that can be adjusted before starting your capture. If you are only intending on capturing a single window, you may want to consider turning off the ''Include Window Decorations'' option (especially if your window contains a Virtual Machine, VNC, or RDP session).

	* After adjusting your options and selecting a window (if not recording the entire desktop), you can press the ''Record'' button to start the recording. '''NOTE''': If you right click on this button you can temporarily ''pause'' your recording.		* After adjusting your options and selecting a window (if not recording the entire desktop), you can press the ''Record'' button to start the recording. '''NOTE''': If you right click on this button you can temporarily ''pause'' your recording.'''HOWEVER''', be aware that if you pause and then continue your recording you may find it difficult to work with the recording in a video editor once the pause point is reached (I struggled for a couple of hours trying to remove a section of video after a ''pause point'' and finally gave up and re-recorded the ending of my screencast).

	* The small red record button on the GNOME panel will turn into a small gray square stop button. At this point you can start talking and using the application.		* The small red record button on the GNOME panel will turn into a small gray square stop button. At this point you can start talking and using the application.

Paul Blankenbaker: /* Publishing */

2011-04-26T23:37:15Z

Publishing

← Older revision		Revision as of 19:37, 26 April 2011
Line 109:		Line 109:

	{{#ev:youtube\|Uqk7iGYMvbE\|640\|360}}		{{#ev:youtube\|Uqk7iGYMvbE\|640\|360}}

			You can also embed a YouTube in a [http://www.networksecuritytoolkit.org/nstpro NST Pro], [http://www.networksecuritytoolkit.org/ NST], or NST WUI web page using the following JavaScript command:

			NstDom.appendYouTube(domNodeOrId, youTubeId, width, height);

			For example:

			NstDom.appendYouTube(document.getElementById("myVideo"), "Uqk7iGYMvbE", 640, 360);

			The @embedYouTube(YOUTUBEID,WIDTH,HEIGHT) @macro() is also available for this purpose:

			@embedYouTube("Uqk7iGYMvbE", 640, 360);

Paul Blankenbaker: /* Publishing */

2011-04-26T15:51:46Z

Publishing

← Older revision		Revision as of 11:51, 26 April 2011
Line 89:		Line 89:

	= Publishing =		= Publishing =

			Once you are done editing and have exported your final screencast, you will need to upload it to [http://www.youtube.com/ YouTube]. This requires a account (mine is linked to my Gmail account).

			After uploading, you will be given a URL containing a link to the uploaded video. For example:

			http://www.youtube.com/watch?v=Uqk7iGYMvbE

			From the URL, you should be able to identify the [http://www.youtube.com/ YouTube] ID of your video (''Uqk7iGYMvbE'' in the example URL shown above). If you would like to embed the video in a MediaWiki page, you can use the following markup:

			<nowiki>{{#ev:youtube\|ID\|WIDTH\|HEIGHT}}</nowiki>

			The ''WIDTH'' and ''HEIGHT'' are optional, but I've found that if you omit them, the MediaWiki extension assumes a 4:3 aspect ratio (which is not good for showing a 720p HD video in). Since specifying a width and height of 1280 by 720 seems a bit large for a web page, I tend to halve both dimensions to embed the video in a 640x360 window. Even though the video is embedded in the page, the user has the option to view it in full screen mode, or play it back at different resolutions.

			Here's an example:

			<nowiki>{{#ev:youtube\|Uqk7iGYMvbE\|640\|360}}</nowiki>

			This results in the following:

			{{#ev:youtube\|Uqk7iGYMvbE\|640\|360}}

Paul Blankenbaker: /* Set Up Area To Capture */

2011-04-26T15:39:17Z

Set Up Area To Capture

← Older revision		Revision as of 11:39, 26 April 2011
Line 31:		Line 31:

	* YouTube limits video uploads to 15 minutes.		* YouTube limits video uploads to 15 minutes.
	* YouTube permits HD video uploads up to 720p (1280x720).		* YouTube permits HD video uploads up to 720p (1280x720). ''NOTE'': 1280x720 corresponds to a 16:9 aspect ratio (wide screen format) and is known to work. I am not sure if YouTube permits 4:3 aspect ratio, but if it does, this would correspond to a screen size of 960x720.

	So, my theory is that to get the best rendering on the final HD video, it's best to start with a screen size that matches the 720p resolution. You basically have three options to do this if you want to capture the entire screen:		So, my theory is that to get the best rendering on the final HD video, it's best to start with a screen size that matches the 720p resolution. You basically have three options to do this if you want to capture the entire screen:

Paul Blankenbaker: /* Capturing */

2011-04-26T15:36:08Z

Capturing

← Older revision		Revision as of 11:36, 26 April 2011
Line 25:		Line 25:

	To adjust the recording levels, I used ''alsamixer''.		To adjust the recording levels, I used ''alsamixer''.

			= Set Up Area To Capture =

			Prior to starting your screencast, you should think about your final output. Here are some things to consider:

			* YouTube limits video uploads to 15 minutes.
			* YouTube permits HD video uploads up to 720p (1280x720).

			So, my theory is that to get the best rendering on the final HD video, it's best to start with a screen size that matches the 720p resolution. You basically have three options to do this if you want to capture the entire screen:

			* Resize your screen to 1280x720 and capture your full screen.
			* Pull up a 1280x720 VNC desktop of a system you want to capture and select this window as the source to be captured (sans window decorations).
			* Use the ''rdesktop'' command to create a 1280x720 desktop view of a remote system and select this window (sans window decorations).
			* Set up a virtual machine running in a 1280x720 window and capture this window (sans window decorations).

			== VNC Set Up ==

			The following command will setup a 1280x720 VNC desktop on a NST system (you might prefer to use the WUI instead).

			nstvncadmin --mode setup -display 1 --width 1280 --height 720

			== RDP Set Up ==

			The following command can be run from the NST command line to launch a 1280x720 RDP viewer of a RDP server (typically a Windows box).

			rdesktop -g 1280x720 192.168.1.8

	= Capturing =		= Capturing =

Paul Blankenbaker: /* Editing */

2011-04-26T15:21:43Z

Editing

← Older revision		Revision as of 11:21, 26 April 2011
Line 57:		Line 57:

	After starting OpenShot, open up the preferences panel and change the ''Melt Executable'' from ''melt'' to ''mlt-melt''.		After starting OpenShot, open up the preferences panel and change the ''Melt Executable'' from ''melt'' to ''mlt-melt''.

			Once you finish with your edits, you can ''Export'' your final screencast from the ''File'' menu. The following screen shot shows the settings I used for HD output for [http://www.youtube.com/ YouTube] uploading.

			[[File:OpenShot-Export.png\|center\|frame\|OpenShot Export Settings]]

	= Publishing =		= Publishing =

Paul Blankenbaker: /* Publishing */

2011-04-25T20:02:33Z

Publishing

← Older revision		Revision as of 16:02, 25 April 2011
Line 43:		Line 43:

	It's highly recommended to make a short ''test'' screencast to verify your settings (it's easy to have the wrong sound device selected).		It's highly recommended to make a short ''test'' screencast to verify your settings (it's easy to have the wrong sound device selected).

			= Editing =

			For editing the captured video, I came across a program called [http://www.openshot.org/ OpenShot]. However, the installation was a bit tricky. Here are the steps I followed:

			Download and install the OpenShot RPM for your system.

			yum install openshot-1.2.2-1.fc13.noarch.rpm

			Install the following packages (if they are not already on your system):

			yum install blender freeze frei0r-plugins

			After starting OpenShot, open up the preferences panel and change the ''Melt Executable'' from ''melt'' to ''mlt-melt''.

	= Publishing =		= Publishing =

Paul Blankenbaker: /* Capturing */

2011-04-25T19:04:35Z

Capturing

← Older revision		Revision as of 15:04, 25 April 2011
Line 34:		Line 34:
	* There are numerous ''Advanced Options'' that can be adjusted before starting your capture. If you are only intending on capturing a single window, you may want to consider turning off the ''Include Window Decorations'' option (especially if your window contains a Virtual Machine, VNC, or RDP session).		* There are numerous ''Advanced Options'' that can be adjusted before starting your capture. If you are only intending on capturing a single window, you may want to consider turning off the ''Include Window Decorations'' option (especially if your window contains a Virtual Machine, VNC, or RDP session).

	* After adjusting your options and selecting a window (if not recording the entire desktop), you can press the ''Record'' button to start the recording.		* After adjusting your options and selecting a window (if not recording the entire desktop), you can press the ''Record'' button to start the recording. '''NOTE''': If you right click on this button you can temporarily ''pause'' your recording.

	* The small red record button on the GNOME panel will turn into a small gray square stop button. At this point you can start talking and using the application.		* The small red record button on the GNOME panel will turn into a small gray square stop button. At this point you can start talking and using the application.

Paul Blankenbaker: /* Capturing */

2011-04-25T16:28:19Z

Capturing

← Older revision		Revision as of 12:28, 25 April 2011
Line 6:		Line 6:

	yum install gtk-recordmydesktop totem		yum install gtk-recordmydesktop totem

			= Sound Card Configuration =

			Configuring and choosing the sound card for ''gtk-recordMyDesktop'' can be difficult on systems with multiple sound devices. Here are some tips:

			ALSA sound sources are used by ''gtk-recordMyDesktop'' and by default, the ALSA sound source of ''hw:0,0'' is used if you leave the sound device set to ''DEFAULT''. To see what sound devices you have available, use the following command:

			[pkb@rice ~]$ cat /proc/asound/cards
			0 [SB ]: HDA-Intel - HDA ATI SB
			HDA ATI SB at 0xfe024000 irq 16
			1 [HDMI ]: HDA-Intel - HDA ATI HDMI
			HDA ATI HDMI at 0xfdffc000 irq 19
			2 [Headset ]: USB-Audio - Logitech USB Headset
			Logitech Logitech USB Headset at usb-0000:00:12.0-2, full speed
			[pkb@rice ~]$

			From the output above, there are 3 ALSA sound sources available. To use the ''Headset'', I needed to change the sound device in ''gtk-recordMyDesktop'' from ''DEFAULT'' to ''hw:2,0''.

			To adjust the recording levels, I used ''alsamixer''.

	= Capturing =		= Capturing =

Paul Blankenbaker: Created page with 'This page provides some notes on creating [http://en.wikipedia.org/wiki/Screencast Screencasts] using a NST system. = Installing Packages = We have found that the ''gtk-recordm…'

2011-04-25T15:13:08Z

Created page with 'This page provides some notes on creating [http://en.wikipedia.org/wiki/Screencast Screencasts] using a NST system. = Installing Packages = We have found that the ''gtk-recordm…'

New page

This page provides some notes on creating [http://en.wikipedia.org/wiki/Screencast Screencasts] using a NST system.

= Installing Packages =

We have found that the ''gtk-recordmydesktop'' provides a simple and free method for capturing screens and producing a screen cast. The ''totem'' package provides a viewer for the ''Ogg Video'' format screencasts (the [[Installing VideoLAN VLC Media Player|VLC media player]] is also capable of playing back these files). To install these packages:

yum install gtk-recordmydesktop totem

= Capturing =

To create your screencast:

* Launch the ''gtk-recordMyDesktop'' application. From the GNOME Desktop, it should be found under the ''Applications'' | ''Sound & Video'' menu.

* There are numerous ''Advanced Options'' that can be adjusted before starting your capture. If you are only intending on capturing a single window, you may want to consider turning off the ''Include Window Decorations'' option (especially if your window contains a Virtual Machine, VNC, or RDP session).

* After adjusting your options and selecting a window (if not recording the entire desktop), you can press the ''Record'' button to start the recording.

* The small red record button on the GNOME panel will turn into a small gray square stop button. At this point you can start talking and using the application.

* When you are done press the small square button on the GNOME panel.

* At this point the raw screen capture data will be encoded and the output file will be saved. By default this will be save to the file ''$HOME/out.ogv'' unless you press the ''Save As'' button before recording.

It's highly recommended to make a short ''test'' screencast to verify your settings (it's easy to have the wrong sound device selected).

= Publishing =