Recently, I was rendering/exporting a 3 hour video. The software said the exported file would be 19GB, and I had 47GB left on my drive. Turns out, that to create enough files, there needs to be more space to create such a big file.
So I have a feature request. When you start to export a video, it should calculate the amount of space left on your storage and should be able to tell you beforehand whether or not the video will render. It's a small thing, but it can be extremely frustrating to wait 6 hours for a video to render, then be super excited to watch it, then see it non-existent.
I understand it's about user error to see that there's not enough storage, but sometimes we don't always check how much storage we have, or we think we will have enough space, when in reality, we don't (like my case).