1. From Media menu select Convert/Save

2. Open Media dialog will be presented and you have to switch to Capture Device tab.

3. Select Capture Mode: Desktop
4. Set desired frame rate. I used 25 fps.
5. Press Convert/Save button and you will see Convert dialog. Source will be preselected to screen://

6. Browse to select destination file
7. In Settings you need to choose profile. I got best results with "Video - MPEG-4 + AAC (MP4)"
8. Hit settings icon to edit profile.

9. My preferred settings are:
- Encapsulation MP4/MOV
- Video codec H-264, 25fps
- Audio codec unchecked since I am not going to record any audio
10. Press Start to begin recording then stop when you finished.
That's all, you got screencast.
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