Film Frame Rates

Film's subjective fps is actually higher than 24 fps because of motion blur.

Perhaps you watched it on a system with the horrible, high-framerate interpolation switched on? Not everyone is sensitive to 24fps (traditional film) vs. 30fps (looks like Handicam output) and the effects of TV/processor motion enhancement.

Movies have motion blur which smooths out the judders of a low framerate

The 24Hz/fps thing is a legacy from original film where it was the sweet spot that created the effect of a moving image without too much flicker, unfortunately you seem to be one of those people who are sensitive to this frame rate.The argument is that the general populous are used to the 'film look' of 24fps, that anything else diminishes the impact of watching a film. Films that have tried high fps (The Hobbit for example) received negative reviews for picture quality; people

Almost all movies are still filmed at 24fps.The thing is, movies aren't shown at 24fps - they actually flash each frame on and off a few times to reduce flicker.It used to be done with a multiple bladed shutter on film projectors, but I believe digital projectors and TVs can do the same thing (on the TV if you turn off that awful motion interpolation that they all have turned on by default for some reason).But one thing movies don't typically have is a very fast moving mouse p

Most of the issues (like "judder") that people have with 24fps are due to viewing it on 60 fps screens, which will sometimes double a frame, sometimes triple it, creating uneven motion. Viewing a well shot film with perfect, expressive motion blur on a proper film screen is surprisingly smooth.The "soap opera" feel is NOT from bad interpolation that can somehow be done right. It's inherent from the high frame rate. It has nothing to do with "video cameras",

Movies look like garbage in >30fps.That's why moviemakers beg audiences not to do frame interpolation.

No, I'm not. The frame interpolation is actually pretty good, and approximates high framerate relatively well. It is the high framerate itself which causes this effect, however. I've seen two movies in theater at high framerate that were shot as such (The Hobbit and another I'm forgetting), as well as the ability to watch high framerate content on YouTube, and it is absolutely the high framerate that is jarring in cinematic content.

https://www.youtube.com/watch?v=EM16aiSSpFk A Defense of 24 FPS

I think it's because of the motion blur. https://news.ycombinator.com/item?id=8793346#8794004 With only 24 fps, we have come to depend on motion blur on each frame to give us motion information. It can be manipulated intentionally (like removing motion blur to make moves in a fight scene feel more abrupt), but if changes don't match what we expect it can feel weird.