How do u post a video on instagram?

[Lames]

I know how to post a vid on instagram but what I mean by my question is how do u post videos like vines on instagram
Please someone help
P.s. I downloaded the video on my laptop but I don't know what to do next!!!

[Vaibhav T]

You can share videos to Instagram you've previously recorded on your phone! To upload a video from your phone:
Tap at the bottom of the app
Tap to switch from camera to video
Tap the box in the bottom-right corner to go to your phone's video album
Pick the video you want to upload (on iPhone, tap Next at the top)
Choose which 15 seconds of the video you want to share by placing your finger on the video strip at the bottom and sliding left to choose where the clip starts playing
Drag the blue slider above the video strip to choose where the clip ends
Tap Add (iPhone) or (Android) at the top