If you would like to record your screen and save it as an HD video, Screencast-O-Matic would be the best app for you as it is FREE. Furthermore, it can help you create HD video and upload it for free hosting all from your browser with no install!
Below is the HD video that I created by using Screencast-O-Matic and upload it on youtube for your reference.
In Vietnamese - Tiếng Việt:
Vietnamvoiz.com
Below is the HD video that I created by using Screencast-O-Matic and upload it on youtube for your reference.
In Vietnamese - Tiếng Việt:
Vietnamvoiz.com