Spoken Tutorial Technology/Creation of spoken tutorial using recordMyDesktop/English for Translation

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Time Narration
0:00 Hello and welcome to this tutorial on “How to use recordMyDesktop”.
0:05 recordMyDesktop is a free and open source screencasting software that works on the Ubuntu Linux operating system.
0:13 For more information on Screencasting software, please watch the spoken tutorial on "How To Use Camstudio" available on this website.
0:21 I have already downloaded gtk-recordMyDesktop version 0.3.8 and installed it on my PC through the Synaptic Package Manager.
0:33 For more information on how to install software in Ubuntu Linux, please refer to the spoken tutorials on Ubuntu Linux available on this website.
0:43 Once you have successfully installed recordMyDesktop, go to the Ubuntu main menu on the top of the monitor or screen.
0:51 Click on Applications and choose Sound&Video.
0:55 This will open the context menu in which you will find the application gtk-recordMyDesktop. Click on it.
01:02 This will open the gtk-recordMyDesktop application window.
01:07 The main application window serves the purpose of defining some basic parameters of the recording, while the tray icon is primarily used for runtime control of your recordings.
01:19 Notice a new entry in your system tray icon - the red circle, representing the record button.
01:27 The system tray icon has 3 states:
  • Recording
  • Stop
  • Pause
01:34 When recordMyDesktop is launched, the icon will be a record sign, i.e. the red circle.
01:41 When one starts recording, the icon will change into a square which is the Stop sign.
01:46 Observe there are 2 squares here.
01:48 This is because I am using recordMyDesktop to record this tutorial.
01:51 To pause the recording, one has to right-click on the square and the icon will change into a pause sign - two thin parallel and vertical rectangles.
02:03 To resume the recording, one has to click on the pause sign again.
02:07 Inorder to stop the recording, one has to click on the square.
02:12 Before setting any parameters, let me give you an important information.
02:18 Right-click on the red circle system tray icon. Here you have the options to show or hide the main application window.
02:26 When you start a recording session the main window will hide itself by default.
02:32 One can also choose to show the main application window by selecting this option.
02:37 “Select Area on Screen” is a way of defining the area that you wish to record.
02:43 Choosing this option will change the cursor into a crosspen with which one can draw the capture on the screen.
02:51 “Quit” option exits recordMyDesktop, exactly like the button on the main window.
02:57 Coming back to the application window, you will find the display panel to the left with a small preview window.
03:06 It depicts a scaled version of your desktop, which can be used for defining an area of recording.
03:13 To the right of this panel you will find the options to increase or decrease the Video Quality and the Sound Quality.
03:22 By default, both Video and Sound quality are set at 100. This setting gives very good playback video quality as well as audio quality.
03:32 The trade-off, however, is a larger file size. For creating Spoken Tutorials, one does not need to have 100% Video quality as it increases the file size.
03:44 Experimenting a bit with these parameters will allow you to get an optimum file size with reasonably good video and sound quality.
03:53 I will set the video quality to 50 and sound quality to 100.
4:00 This is because the size of the audio stream will occupy only a small part of your resulting file.
4:08 By default, recordMyDesktop does not record audio. To enable audio capture,one has to check the box to the left of Sound Quality.
4:20 Notice the button ADVANCED. Lets click on it. This will open another dialog box as seen here.
4:28 Visit the ADVANCED window at least once, in order to better customize the behavior of recordMyDesktop.
04:35 All options in this window are saved and applied when you close it. There are 4 options in the Main Menu of this window.
04:43 The first tab is Files. There are two options here.
04:48 There is an option to overwrite existing files, bearing the same filename in the same location, with the one you chose for your recording.
04:57 By default this option is turned off. Hence the existing files are not touched at all. Instead the new one is saved with a number postfixed at it's filename.
05:10 So, if you choose to save your recording as recording.ogv, in your home directory and there is already a file named like that,
05:18 the new one will instead get saved as recording-1.ogv. If recording-1.ogv exists ,then the new file will be named as recording-2.ogv and so on.
05:31 Let me open the Advanced tab again . If the “Overwrite Existing Files” option is turned on, existing files are deleted without any prompt.
05:41 So, one has to be careful with it. The “Working Directory” option is the location in which the temporary files are stored during the recording.
05:50 This applies only when you are not performing encoding on the fly.
05:55 The next tab is Performance. There are 5 options here. Be sure to set the “Frames per second”.
06:02 2 frames per second is a good setting for this parameter. However, for high animation videos, set any number between 15-20 frames per second.
06:12 The “Encoding on the Fly” option causes recordMyDesktop to encode during the capture.
06:19 By default, it is off. This is useful when you don't need a high fps, or you are capturing a small area.
06:28 But if you need a smooth recording of a not-so-small area, you should turn this option off.
06:34 As mentioned earlier, when using this option, both audio and video quality must be set to 100%.
06:42 “Zero Compression” tab controls the compression of the cache. “Quick Subsampling” deals with the quality of the colorspace transformation. We will leave them as they are.
06:55 “Full shots At Every Frame” enables full captures. By default, it is turned off.
07:02 The third tab is Sound. The “Channels” option sets the number of channels in the resulting audio stream.
07:10 It can be 1 (mono) or 2(stereo). When recording from a microphone, selecting more than one channels is completely unnecessary and will only increase the size of your output file.
07:24 The “Frequency” setting, is probably the most defining factor for the audio quality of a recording.
07:30 The default is 22050, which is more than enough for speech, but if you are recording music, you might need to use 44100.
07:40 The “Device” should be set to “plughw:0,0” this is so that you have precise control of the channels and frequency values.
07:54 Only then will the audio play smoothly, without any hitches or jumps. Typing “default” in lowercase alphabets also works.
08:05 If you are using an external jack for recording, then check this box.
08:11 The channels, frequency and device fields will be disabled. These settings are now provided by the Jack server.
08:19 Before enabling Jack capture, you should make sure that a Jack server is running.
08:25 The last tab is Miscellaneous. There are various options here which are meant to be used less frequently.
08:34 An important option here is the Follow Mouse option. When checked the capture area will follow the cursor wherever it moves on the screen.
08:43 When unchecked, the capture area remains stationary inspite of cursor movement. I will give you a demo of this soon.
08:53 Let me also check outline capture area on screen.
08:58 We will close this window now. Remember, all the settings will be saved as soon as we close this window.
09:06 In the preview window of the display panel lets draw a capture area for our sample recording.
09:14 Click on the left-mouse button drag. Release the button.
09:20 You will find a small rectangle in the preview window and a larger rectangle on your screen. This is the actual capture area.
09:30 All activities within this rectangle will be captured in the demo recording. Now, lets do a demo recording.
09:39 I will click on the record icon. Hello and welcome to the demo recording using recordMyDesktop.
09:48 This is a demo recording to demonstrate how easy it is to create a spoken tutorial.
09:54 Click on Applications – Choose office - wordprocessor. Let me type DEMO here and click on the square icon to stop the recording.
10:16 recordMyDesktop is now encoding and producing a movie in 'ogv' format.
10:24 let me close the open office writer. The encoding is complete and the movie is now ready. Lets check it out.
10:31 We will find the output 'ogv' file in the Home Folder. Click on home folder, here it is,This is our demo recording. Let's play this.
11:14 So, I hope the information given in this tutorial will help you to use recordMyDesktop on your computer.
11:21 Install this free and open source software and use it to create audio-video tutorials and online visual learning modules of your own.
11:30 Spoken tutorial activity is the initiative of the ‘Talk to a Teacher’ project coordinated by http://spoken-tutorial.org, developed at IIT Bombay.
11:42 Funding for this work has come from the National Mission on Education through ICT, launched by MHRD, Government of India.
11:51 For more information, please visit http://spoken-tutorial.org/NMEICT-Intro.
12:01 This brings us to the end of this tutorial. This is Nancy from IIT Bombay saying Goodbye and Thank you for watching.

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