It's definitely not 24 hours per frame outside of gargantuan shots, at least by wall time. If you're going by core time, then it assumes you're serial which is

It's definitely not 24 hours per frame outside of gargantuan shots, at least by wall time. If you're going by core time, then it assumes you're serial which is never the case. That also doesn't include rendering multiple shots at once. It's all about parallelism. Finally, those frame counts for a film only assume final render. There's a whole slew of work in progress renders too, so a given shot may be rendered 10-20 times. Often they'll render every other frame to spot check and render at lower resolutions to get it back quick.