After providing my classmates with very specific guidelines on how to export their footage, I realized that there was in fact a better option available. Originally having them export in an mpeg4 codec the clips were not as good quality as they could have been. However, when I checked with a newer version of Premiere Pro, it became apparent that the Apple Pro Res codec would be much more appropriate.
Here are the new guidelines and the comparison on quality difference:
Facebook did degrade the quality of this image, so difference is not as drastic as this photo makes it seem. Anyway, I left it open as an option, the original clips quality was still appropriate for Signal.