dmiraie wrote why is 30fps apparently considered "more cinematic"? |
Because it is closer in appearance to the theatrical film standard, 24 fps.
Why might you choose one over the other? |
Because of the look it gives your work. If you want your project to have a more cinematic appearance, you would want to use a frame rate as close to 24fps as possible. If you are not concerned about that, and want to have the smoothest motion possible, you would use a higher frame rate.
Does it depend on video content? |
Yes, but more about how you want that content to appear, the rendition you want that content to have.
Not so much, your file size is determined by the bitrate of the file, not the number of frames per second.
YouTube, Vimeo, etc. allow for most any frame rate source. It is possible you might have a webmaster that has certain preferred formats for video inserted on a particular site. It is my understanding that the current and earlier iPhones (while they can record 60fps video) always playback the file displaying at 30fps.
Are there some cases where one or the other is simply inappropriate? |
Not that I can think of. Generally speaking, if the content is of sufficient interest, the frame rate is ignored by viewers.
MtD