How to resize the video with any changing of video quality by mobile?

Hello everyone.This is my first post.Today we learn how to resize the video.We all know that there are some video quality like MP4,Hd,3gp etc.But we can resize the into 3gp without any changing of video quality.For doing this we need an apps which can help us for doing this.

First download the the app form play store.link is here

and now flow the screenshot.

First open the app and click trim&compress or convert to mp4.

Second choose the video from gallery and select the  resolution option select resolution then click the option which I show in the screenshot and then follow the next screenshot.

Now as you can see that 

the real video size is 898.73mb which is less than compress video size .

So now we learn how to do this if like my or any problem then comment me,Bye.