Storage becomes temporarily full while swapping a video. Is there any way to prevent this?

I have 150gb of free space but when a video is being processed, my storage gets really full like only some megabytes of free space are left. I get the idea of having temporary files when it's processing but it slows down the whole process when this happens.

Is there any way for me to minimize or prevent this? I just dislike the slow process of waiting for hours when processing a video. Thanks in advance.