There are many tools and processes for compressing video in order to make it small enough to send to the assignments folder, through email, etc. The Windows and Apple app stores contain many free options that you may want to try for this issue. These instructions will use a free application called VLC (Video Lan Client). VLC is a popular app for playing different types of media on Windows, Mac, and Linux computers and it can also be used to make videos smaller. 

Before you begin, you will want to visit https://www.videolan.org/index.html, download VLC, and install it on your computer. 

1. With VLC open, click on Media > Convert/Save. 

2. Click Add... to select the video you wish to compress.

3. Click Convert/Save to bring up the conversion options. Click on the Profile drop-down menu and select an option that sounds like it would fit a smaller screen size, such as "Video for iPod/iPhone/PSP" or "Video for YouTube SD". 

4. Next, click on the "Settings" icon directly to the right of the profile drop-down menu. From here, you can view the width and height that your video will be set to and alter it to make it smaller, if necessary. 480px x 272px should, in most cases, make a significantly smaller video file than what you originally recorded in. 

5. Click "Save". 

6. Click the "Browse" button to select a location to save your newly compressed video file. 

7. Click "Start". 

Once the process has completed, you should have a much smaller video that you can attempt to send through an assignments folder, via email, etc.