jaiabird

Hi everyone - 
I just encountered the same problem and found a couple solutions that may work for some of you.
If you need to reduce video files, one program you can use is Handbrake. This is a free video-compression program for both Windows and Mac, and it's amazing at reducing file size without reducing quality. The resulting videos look exactly the same as their originals. Here's a video walk-through of working with handbrake, including which settings to use, where it exports to, etc: https://youtu.be/nnipCQPd0fw
Second is a website called https://www.freeconvert.com/ which offers a bunch of file-compression tools to reduce file sizes of almost any kind of media (videos, audio files, pdfs, jpegs, etc.). On their website under Tools > File Compressors, you'll find all the file types you can compress.
 
If you need to compress videos like I did, in the Video Compressor tool (https://www.freeconvert.com/video-compressor) they allow you to define the target output size (in our case, 300MB), and not only did it work like a charm (my video went from 606MB to 287MB), the video quality also looks great to me - honestly can't tell the difference between the original and the compressed one).
I think you can do a lot on their site for free (e.g. I was able to compress 5 x 600MB+ videos for free), and if you need to do more it's only $9 (for a 1-month subscription).