This app was mentioned in 6 comments, with an average of 1.17 upvotes
I use vidtrim pro to truncate or rotate vids, it also has a transcode function which will let you downscale video resolution/size. Try the free version to see if its useful to you.
Hey!
I like to use VidTrim. I ended up buying the "Pro" version for a few dollars (I don't remember how much it was honestly) because I was so excited to find an Android video editor that actually worked. Although, your mileage may vary--
https://play.google.com/store/apps/details?id=com.goseet.VidTrimPro
https://play.google.com/store/apps/details?id=com.goseet.VidTrimPro&hl=en
Hehehe ... touché. Well it just works and I know people coming from iOS like this sentence a lot :P.
Try it. Its only $2.49