Tuesday, May 20, 2008

How to make a screencast on ubuntu linux video.



If you wanna be able to do a screencast on linux ubuntu you have to type on your ubuntu's shell:

sudo apt-get install recordmydesktop
sudo apt-get install gtk-recordmydesktop
sudo apt-get install mencoder
sudo apt-get install subtitleeditor
sudo apt-get install avidemux
sudo apt-get install ffmpeg

Then, to capture the video you have to type: recordmydesktop
To stop the video capturing you have to press the combo ctl+c
To run audio/video converter ffmpeg use:
./ffmpeg -vcodec mpeg4 -b 1000 -r 10 -g 300 -vd x11:0,0 -s 1280x1024 test.avi

./ffmpeg --help:
"1000" is the bitrate (increase it to get better quality, but more larger files).
"0,0" tells FFmpeg to record from the top-left cornet of the screen.
"1280x1024" screen resolution, or the window that you want to record.
In that case, you can use xwininfo -frame to get more exhaustive infos about a particular window's coordinates.




If you want to merge files and more other things, likes load multiple video clips, cut and paste portions of video/audio, and save it to an edit decision list (SMIL XML format). Most edit and navigation commands are mapped to equivalent vi key commands. Also, Kino can export the composite movie in a number of formats: DV over IEEE 1394, Raw DV, DV AVI, still frames, WAV, MP3, Ogg Vorbis, MPEG-1, MPEG-2, and MPEG-4 you could use Kino

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