Monday, December 13, 2010

Creating a screencast in Ubuntu Linux

To create a screen cast in Ubuntu we need three softwares
  • recordmydesktop for capturing and recording the desktop
  • gtk-recordmydesktop, a graphical frontend for recordmydesktop
  • mencoder for encoding the recorded video to xvid or any other format.

If you also need to record your voice in the screencast then you will need a properly configured sound card along with a decent microphone. You can test your microphone and sound card settings using Sound Recorder.

You can install the softwares using the following command:
sudo apt-get install mencoder recordmydesktop gtk-recordmydesktop
after installation completes run gtk-recordMyDesktop from Applications->Sound & Video menu

If you want to record your full desktop then simply press record and recording will start. You will see a small square in the Notification Area.
This shows that recordmydesktop is currently recording. When you are done and want to stop recording just click on this square and recording will stop. This square will then turn into a red circle and recordmydesktop will start encoding the captured video. It will take some time before it finishes, after that you can find the recorded video in your home directory.
But if you dont want to record complete desktop but only want to capture a single window then you can click on Select Window button and then click on the title bar of the window that you want to record and recordmydesktop will only record the selected window.
If you dont want a specific window but you want the recording to be limited to specific screen area then you can select that area from gtk-recordMyDesktop's preview area. Just left click and drag your mouse to select the desktop area for recording.
recordmydesktop produces files with .ogv extension. I dont know what codec it uses but the files are big e.g a 10 min recording my take upto 60-70 MB. To covert these files into divx use following commands
mencoder your_file.ogv -ovc xvid -xvidencopts bvhq=1:chroma_opt:quant_type=mpeg:bitrate=658:pass=1 -oac pcm -o /dev/null
mencoder your_file.ogv -ovc xvid -xvidencopts bvhq=1:chroma_opt:quant_type=mpeg:bitrate=658:pass=2 -alang en -oac mp3lame -lameopts br=96:cbr:vol=6 -o your_file.avi
This will convert the ogv files into avi with xvid video and mp3 audio. After that you are done and your screencast is ready. If you want to edit this avi file to add some effects or any thing you can use Pitivi video editor which comes by default with Ubuntu (10.04 onwards)

18 comments:

meldaresearchusa said...

We would like to bring to your attention that, the most effective way one can submit quality Online Custom Paper Writing Service papers is by having an agency offering such services alongside others in Custom Research Paper Services and custom term papers.

Priya Escorts said...

Navi Mumbai Escorts | Call Girls in Navi Mumbai | Navi Mumbai Call Girls | Escorts in Navi Mumbai | Russian Navi Mumbai Escorts | Call Girls Service in Navi Mumbai | Escort Service in Navi Mumbai
Punjabi Call Girls in Navi Mumbai | Navi Mumbai Escort | Independent Navi Mumbai Escorts | Independent Escorts in Navi Mumbai | Navi Mumbai Escorts Agency
Navi Mumbai Escorts Service | Escorts Agency in Navi Mumbai | Escorts Navi Mumbai | Navi Mumbai Female Escorts | Navi Mumbai Escorts Models
Navi Mumbai Model Escorts | Cheap Navi Mumbai Escorts | Navi Mumbai Independent Escorts | Escorts Girls in Navi Mumbai | Navi Mumbai Escorts Girls

Sarah Pilon said...

Lahore Smart City is going to be the best choice for commercial, investment and residential point of view. The scheme will have everything to attract national and international investors. In return, investors will get high revenue. On the other hand, the housing society is equipped with state of the art facilities. The facilities are just dream of come true for the people of Lahore. Peace, safety and eco-friendly behaviors. Future Development Holding hires and corporate’s with world-class developers, architectures and planners. This Smart City Lahore will have golf clubs and fields designed by experienced and world-recognized designers.

Deal and Delas said...

Furthermore, the plots can be easily booked through our, Deal and Deals –real estate industry experts. One thing that is important to note here is that:
BWC

Blue world city Islamabad payment plan

Blue world city Islamabad installment plan

Blue world city Islamabad map


PWCL

park view lahore payment plan
park view lahore installment plan
park view lahore map
park view lahore location

...

Rudn Enclave.

Rudn Enclave payment plan
Rudn Enclave Rawalpindi
Rudn Enclave location and map
Rudn Enclave Executive Block Payment Plan


makeenmarketing1 said...

Thank you for this article; I'm writing to let you all know about Nova City Islamabad, a real estate project that can generate exceptional returns. Click on the link to get the most bang for your cash.

Alexa Ander said...

"An oral Cavity Tumour is an illness that becomes inside the mouth. It can fill in any part. Specifically, it occurs on the lips, the gums, and the tongue. It can moreover occur on the inner skin of the cheek, the floor, and the highest point of the mouth. Oral Cavity Tumor Surgery in rawalpindi is available for patients to get the best treatment.
"

Alexa Ander said...

"On the off chance that you have lost the hair on your facial hair over the long run or you have normally slight hair, best beard hair transplant in rawalpindi will give a convenient solution to your sketchy facial hair. Indeed, it is conceivable and presently you can accomplish that manly look facial hair medical procedure. Get a new start with a new look.
"

Land Marketing said...


Park view city is a beautiful serene housing society that is located in the prime location of zone IV Islamabad. The vision of this project is to provide a family-friendly, safe, and luxurious lifestyle.
Park View City Islamabad!

Land Marketing said...

New Metro City Gujar khan, a project of BSM Developers is a series to Bahria Town Group Pakistan. After Successful projects in Kharian and Gawadar, now launching Metro City Gujar Khan.
https://landmarketing.com.pk/societies/new-metro-city-gujar-khan

Ali Khan said...
This comment has been removed by the author.
Ali Khan said...

Ghafari Marketing is an authorized sales partner of blue Avalon city Islamabad, New Metro City Gujar Khan, Tab City Rawalpindi and New Peshawar valley. To Know More about real estate visit the official website of Ghafari Marketing

Ali Khan said...

Ghafari Marketing is an authorized sales partner of blue Avalon city Islamabad, New Metro City Gujar Khan,andNew Peshawar valley. To Know More about real estate visit the official website of Ghafari Marketing

Debt collection dubai said...

debt collection dubai is the most prevalent problem, and it can only be solved with knowledge of the market and business strategies. We pledge to make our best efforts to collect on the debt, and our seasoned associate lawyer will diligently guide the customers to prevent further losses or abuses. You can always get assistance from our debt collectors. As the leading debt collection firm in Dubai, we have been serving our clients for nearly 25 years. As with debt collection firms in the UAE, our services operate on a No Win No Fee basis.

Real Estate & Property said...

The blog provides the definite and authentic information. I truly prefer your style and your authenticity has made up my mind to come again and read the blog to increase my knowledge. Keep it up and please produce something informative about Blue World City, Rudn Enclave, Citi Housing Kharian and Zaitoon City.

makaanSEO said...

Avalon City Islamabad is a multi-purpose housing society on Main Chakri Road, that will be developed by ZKB Developers. The Society has a huge potential for profit as it is Pakistan's First-Tech Housing society with Ultra-Modern Tech facilities

XNO said...

Football pitch stamp Nine-player Football Field. NOTE: By state association adoption, the dimensions of the field may be altered.

Zaaan said...

Citi Housing Kharian developers know the worth of an educated community in a housing society. Therefore, we come forward in Kharian to develop the international standard educational institutes within the society.
Every patient and citizen of New Metro City Gujar Khan will get high-quality medical attention from doctors and nurses at every hospital in society. The owner and developers of the new housing society in Gujar Khan

XNO said...

MedTechProviders, best medical billing company delivers seamless experience, offering solutions that are cost-effective, secure, and reliable.