Question: Location: Jahangirnagar university, Savar, Bangladesh
[![unidentified spider](https://i.stack.imgur.com/6pSiJ.jpg)](https://i.stack.imgur.com/6pSiJ.jpg)

EDIT: [Here](https://youtu.be/52lSx_yl45A) is the video from which image is taken

Answer: 
It is a [jumping spider](https://en.wikipedia.org/wiki/Jumping_spider). Could be Genus *[Epocilla sp.](https://en.wikipedia.org/wiki/Epocilla)* .

Jumping spiders have their posterior lateral eyes placed high up the cephalothorax and the rest three pairs in a [typical arrangement](https://upload.wikimedia.org/wikipedia/commons/1/1b/Salticidae_Male_Anterior_annotated.jpg) as observed in your specimen.

[![enter image description here](https://i.stack.imgur.com/1pu0F.png)](https://i.stack.imgur.com/1pu0F.png)

An image of *Epocilla sp*. from [Wikipedia](https://commons.wikimedia.org/wiki/File:Epocilla.jpg).

Your specimen more closely resembles the [*E. calcarata*](http://www.jumping-spiders.com/php/tax_drawings.php?id=1323) .
Accurate Spider identification to species level is done by viewing the tiny structures of their anatomy under a microscope examining the spider’s reproductive organs. To find out which family your spider belongs to comes with experience. Helpful in identification are the eyes of the spider and they are not visible in this photograph. How many does it have? How are they arranged? How does each eye’s size compare to those around it? Here is a helpful link to some rules for identification. Good luck!!

<http://www.spiders.us/articles/identification/#spider-location>