How many frames can humans see
100fps.com
100fps.com
The human eye is very sensitive but can we see a single photon? The answer is that the sensors in the retina can respond to a single photon. However, neural filters only allow a signal to pass to the brain to trigger a conscious response when at least about five to nine arrive within less than 100 ms. </quote> http://math.ucr.edu/home/baez/physics/Quantum/see_a_photon.h...
You do get aliasing effects with strong strobing though, where your eyes can see beating patterns in the image intensity. That's why some people get eye strain looking at 60Hz displays; moving to ~70Hz or so generally fixes it.
But again, our visual systems do not have the ability to distinguish between individual events separated by 1/60th of a second. We just can't do it, and trying to animate at that speed is purely wasted effort.
And yet, there's a very clear perceivable difference between a game running at 30hz and 60hz. How does that work?
If the game rendered at 30fps but with motion blurring to account for 1/30s of motion, and at 60fps to account for 1/60s of motion, I predict it would be very difficult to tell the difference.
Almost certainly, you're not seeing a 30Hz game. You're seeing a game running at 30Hz typically and being annoyed by a handful of frames that take longer than ~100ms. It's the outliers that are doing it, not the frame rate.
One of the most interesting examples of 30fps vs. 60fps. was the PC port of the original Halo. It has the option to unlock the framerate from 30fps and render as fast as possible, unlike the locked-at-30 Xbox original. However, all the animations were 30hz - if you disabled the framerate lock, the gameworld would run perfectly smooth (moving, physics, etc.), but all of the animations stayed at 30hz, appearing choppy and disconcerting. (I believe there are demos of Halo 1 for PC and Mac, should you have a computer capable of running it - since it's many years old it should be OK on anything with a reasonable graphics card, though you may need to turn the graphics settings all the way down to see the effects.)
Many games will be fine at 30FPS, as long as they maintain that framerate - but for very fast action games, the extra frames do make a noticeable difference in feel and responsiveness.
The visual difference is so significant that television broadcasters have kept interlacing solely for the greater temporal resolution, despite the tens of billions of dollars in inefficiencies that the legacy technology creates.
The question was if there's a single game (or video) you can point me to that (1) has a solid 30Hz frame rate and (2) looks perceptibly "not smooth" for some obvious definition thereof.
Here, I'll give an example that doesn't even rely on high motion, flashing, or other such tricks: a simple video game clip. This particular game engine has its display locked to 60fps: the in-game time between two frames is absolutely constant, so even if your computer is too slow to display in realtime, it will simply output frames slower. As a result, the FRAPS'd capture of the game is a perfect smooth 60fps no matter what.
Additionally, it doesn't have any single-frame effects that would be visually aliased (e.g. lightning), nor does it have any sort of motion blur.
http://mirror05.x264.nl/Dark/testfps1.mkv http://mirror05.x264.nl/Dark/testfps2.mkv
Don't look at the filesizes (obviously, 60fps will be larger), and don't go checking the file info or whatever. Just play them in your favorite media player.
I'm pretty sure you'll be able to tell which is 60fps.
I agree that the smaller file looks jumpier. But it's still reporting the same frame rates as the bigger file, which leads me to believe the jumps are an artifact of translation somewhere. Certainly nothing seems to be "locked".
Because that's the rate of the frames being displayed during capture. Again, the in-game time between two frames is the same, so if it captures at 50fps, that just means the game runs at 50/60=5/6 times normal speed.
It's similar to how you can capture a 1000fps recording in Counterstrike: the game doesn't actually have to run at 1000fps, it just slows down the game accordingly.
I agree that the smaller file looks jumpier. But it's still reporting the same frame rates as the bigger file, which leads me to believe the jumps are an artifact of translation somewhere. Certainly nothing seems to be "locked".
It sounds like your media player is broken, because ffmpeg gives 60fps for the higher framerate file and 30fps for the lower one.
And it's all relative… The argument is that 30fps is perfectly smooth until you see it side by side with 60fps.
So there definitely is some room for quality improvements above 30Hz, but the amount depends on the viewer and the technology (flat screens do not flicker even at 60Hz, and it is almost always preferable if you animation frame rate is the same as you video refresh rate [edit: or an integer fraction thereof. From which premise we can mathematically prove that there is only one acceptable frame rate for TV sets: the least common multiple of 30Hz (NTSC video), 25Hz (PAL and SECAM video) and 24Hz (movies), which happens to be 600Hz. Way to go, my dear marketing departments.] ).
I have a theory: the ultimate limit of broadband upgrading movement is our brain's whole throughput. After that individual consumers' demand will slow down and the broadband market will be dedicated for industrial broadband market. :)
The human eye is only ~2 megapixels but it's focused on a small part of your field of view. So if you wanted to fool the eye you either need to track what it's looking at or to create a huge high resolution screen most of which is ignored. Add in the ability to focus and you suddenly need to add depth information and a display that can handle it or you will not fool the eye. Now add the fact that most people have 2 of them and it gets even more insane.
PS: Video cards have far higher internal bandwidth than external bandwidth for a reason. Focusing on the brains bandwidth is not going to be enough.
Please, writers--choose your examples with a broad audience in mind.
You're likely to need a Glide wrapper too: http://www.sierrahelp.com/Utilities/DisplayUtilities/GlideWr...
I think we should dismiss his 100fps articles based on the fact that he operates a strange dating tips site.
"Moreover many women have bisexual tendencie"
I can confirm this based on the sample of my female friends. Wondering why ...