Awareness of remaining disk space

VEAI should know when an operation could fill a disk and at least warn the user. I’m not sure exactly how it should be done, but anything would definitely be appreciated. As it is right now, it will just keep writing until the disk is absolutely full and then it totally freezes.

When exporting you don’t really know the output file size in all but one case - uncompressed frames. Still, that’s 1/3 of the options, so it should be doable (calculate the number of output frames, multiply by frame size, report export total size, cry).