You can use third app to root your mobile if your mobile is Android 4.4, like Kingroot, Rootland etc.
DowlandKingroot:https://play.google.com/store/apps/details?id=net.mydev.kingproroot
DowlandRootland:https://play.google.com/store/apps/details?id=com.rootlandscn

Recording Master is the BEST FREE app to record screen of your Mobile.

Recording Master will work smoothly without root on Android 5.0 Lollipop, but for Android 4.4 and below, it requires ROOT access.

Recording Master is the BEST FREE app to record screen of your Mobile. The app contains no watermark, it is ad free and very easy to use with one click to start and stop recording. This screen recording app will provide all features that you need in a simple and elegant UI design, which can help you make beautiful screen-cast videos.

Recording Master can make everyone satisfied with highlights below:

1.HD or SD Recording

2.Floating widget staying on top

3.Pause recording at anytime

4.Show screen touches for the duration of your recording

5. Open front facing camera: you can record your face and your emotions in a small overlay window

6.Shake to start or stop recording

7.Edit videos while complete recording

Additionally, there are many other features in this free screen recorder such as setting video resolution , screen orientation, saving directory selection, view/share or delete your recorded videos... All of them these are free for you!

FAQ:http://www.ifeimo.com/faq.html
Help:http://www.ifeimo.com/help.html

If you have any feedback, bug reports, suggestions or you can help with the translations, please contact us at xuhao@ifeimo.com