WEBVTT 00:00:00.080 --> 00:00:06.400 So, you got your expensive graphics card, your overclocked octaore CPU, and 00:00:04.560 --> 00:00:11.120 more memory than a freaking elephant. But when you're playing the latest AAA 00:00:08.800 --> 00:00:16.080 games on your PC, or really anything else, for some reason, things don't seem 00:00:13.840 --> 00:00:19.920 quite right. Especially when you're looking at a scene where a lot of things 00:00:17.680 --> 00:00:25.039 are moving around at once or the camera's panning. Because even with all 00:00:22.480 --> 00:00:30.000 that horsepower under the hood, motion blur is a problem on even the most 00:00:27.519 --> 00:00:35.120 powerful rigs. And if you're gaming on a VR headset like the Oculus Rift, it can 00:00:32.559 --> 00:00:38.800 be even more distracting. Now, to be clear, we're not talking about the kind 00:00:36.719 --> 00:00:43.440 of motion blur that is intentionally added to a game in post-processing. What 00:00:41.200 --> 00:00:48.640 we're talking about is unintentional motion blur caused by excessive pixel 00:00:46.320 --> 00:00:53.039 persistence. You see, an electronic display, whether it's a computer monitor 00:00:50.399 --> 00:00:57.520 or a headset or a phone, is made up of millions of individual pixels that 00:00:54.960 --> 00:01:01.039 change their brightness and color to create an image that you see. So, 00:00:59.520 --> 00:01:04.960 whenever the image on the screen changes, which is nearly constantly if 00:01:03.120 --> 00:01:10.159 you're playing a game that isn't Pong, the pixels cannot respond 00:01:07.880 --> 00:01:14.240 instantaneously. With a typical LCD monitor, there's actually delay of a few 00:01:12.159 --> 00:01:19.119 milliseconds before the pixels can actually change. Now, while there are 00:01:16.960 --> 00:01:23.600 fast response monitors which have a delay or response time of just 1 or two 00:01:21.439 --> 00:01:28.479 milliseconds, which helps to cut down on motion blur significantly, even those 00:01:26.560 --> 00:01:34.640 don't completely solve the problem. In fact, even if a zero millisecond monitor 00:01:32.000 --> 00:01:40.240 existed, there's still an issue with how LCD displays actually show images to us. 00:01:38.079 --> 00:01:44.320 Like other pieces of digital hardware, an LCD display works by sampling image 00:01:42.640 --> 00:01:49.680 data it gets from the computer many times a second and displaying the 00:01:46.320 --> 00:01:51.840 samples as a series of still images. 00:01:49.680 --> 00:01:56.479 These still images are then displayed at a rate equal to your screen's refresh 00:01:53.680 --> 00:02:01.439 rate, usually 60 Hz, and your brain interprets this as movement. However, 00:01:59.119 --> 00:02:05.439 your eye is not a piece of computer hardware, unless of course your name is 00:02:02.799 --> 00:02:10.000 Adam Jensen. Human eyes are really good at perceiving differences in fluid 00:02:07.680 --> 00:02:16.560 motion. And while high refresh rate displays that operate at 144 hertz or 00:02:13.280 --> 00:02:19.040 even higher look great, they still can't 00:02:16.560 --> 00:02:23.200 completely fool our brains just by showing us a series of static images. 00:02:21.360 --> 00:02:27.840 And as if the problem of motion blur weren't bad enough on computer monitors, 00:02:25.360 --> 00:02:32.000 it's much worse if you're using an Oculus Rift or VR headset like I 00:02:30.000 --> 00:02:36.959 mentioned before. While motion blur might just be an annoyance if you're 00:02:34.000 --> 00:02:42.560 gaming in 2D on a desktop PC, it can actually make you sick on a 3D display 00:02:40.080 --> 00:02:47.599 like the Oculus Rift. Because these headsets work by surrounding your field 00:02:45.200 --> 00:02:52.640 of vision in immersive 3D environments, motion blur in these situations can make 00:02:49.599 --> 00:02:54.879 you feel physically out of balance with 00:02:52.640 --> 00:02:59.360 your surroundings and cause a very similar nausea to what you'd feel in a 00:02:57.519 --> 00:03:04.720 car or an airplane in the same situation. So, the solution itself is a 00:03:02.400 --> 00:03:08.879 pretty simple idea. Well, let's just cut down on how long individual pixels are 00:03:07.280 --> 00:03:12.879 displayed so that we don't we're not out of sync. But how are display 00:03:10.879 --> 00:03:17.200 manufacturers going to accomplish this? Well, one way is through a technique 00:03:14.879 --> 00:03:22.480 called backlight strobing. Typically, modern LCD monitors are illuminated by a 00:03:19.519 --> 00:03:26.480 backlight that's always on. However, in a display that uses backlight strobing, 00:03:24.720 --> 00:03:32.239 the backlight instead switches on and off rapidly, reducing the amount of time 00:03:29.280 --> 00:03:36.640 that you actually see each pixel. This is very similar to the way that CRT 00:03:34.480 --> 00:03:40.799 displays, which were, you know, for the kids that weren't alive in the time of 00:03:38.720 --> 00:03:46.159 the dinosaurs, which are those old tube things that existed before LCDs came 00:03:43.599 --> 00:03:50.799 onto the market, and is the reason that CRTs have historically been better at 00:03:48.959 --> 00:03:54.560 displaying scenes with fast motion, at least to our eyes. There are a number of 00:03:53.120 --> 00:03:59.200 monitors on the market that feature backlight strobing combined with high 00:03:56.720 --> 00:04:04.000 refresh rates to reduce motion blur as much as possible while still maintaining 00:04:01.760 --> 00:04:09.280 the picture quality and low energy consumption, not to mention the space 00:04:05.599 --> 00:04:11.200 savings of a flat panel LCD. Of course, 00:04:09.280 --> 00:04:15.360 it's also possible to ditch the backlight altogether and go a different 00:04:13.439 --> 00:04:20.639 route. So, the consumer version of the Oculus Rift features a display based on 00:04:17.359 --> 00:04:22.720 organic LEDs or OLEDs. OLEDs can 00:04:20.639 --> 00:04:27.360 generate their own light through the use of specialized organic compounds. But 00:04:25.040 --> 00:04:32.000 more importantly for gamers, OLEDs have a very quick response time, much faster 00:04:29.759 --> 00:04:36.479 than the pixels in a conventional LCD. And not only does this cut down on 00:04:33.680 --> 00:04:41.120 motion blur on its own, the low response times allow OLEDs to interpolate frames 00:04:39.040 --> 00:04:45.919 easily, meaning that your system can guess missing frames in a given second 00:04:44.080 --> 00:04:49.520 to match your display's frame rate. Or if you're just watching a movie recorded 00:04:47.600 --> 00:04:53.120 at the usual 24 FPS and you want your experience to be less cinematic, I guess 00:04:51.040 --> 00:04:58.000 it could do that, too. So whether you're gaming in 3D using a headset or just a 00:04:56.000 --> 00:05:02.400 monitor with 3D glasses, these technologies will help you do your thing 00:05:00.639 --> 00:05:06.639 without feeling like you're on some kind of vomit inducing carnival ride. 00:05:04.880 --> 00:05:10.400 Speaking of vomitinducing carnival rides, our sponsor today is Fractal 00:05:08.639 --> 00:05:15.199 Design. And boy, do we have a treat for you. Instead of telling you guys about 00:05:12.639 --> 00:05:19.520 their, you know, Scandinavian designed cases and power supplies and cooling 00:05:17.759 --> 00:05:24.000 products, we're having Luke wrap up here. Look, we had this conversation 00:05:22.240 --> 00:05:28.400 already. I told you I have to host this because you just can't do a good enough 00:05:25.360 --> 00:05:30.560 job of it. So, I'm super done. I'm sick. 00:05:28.400 --> 00:05:33.840 This is ridiculous. I've I've been trying to build this company for like 2 00:05:32.160 --> 00:05:37.840 years. We don't have to roll the camera on this. Like, okay, look, if you need 00:05:35.680 --> 00:05:41.759 to talk about this, then you need to talk to yourself about how you run the 00:05:39.840 --> 00:05:46.080 company. No air conditioning. People are like overheating all the time. Um, I'm 00:05:44.639 --> 00:05:52.000 working while I'm sick. I have to get my doctor's appointment because I have to tape you up. Look, I think What even is 00:05:49.680 --> 00:05:55.120 that? Like I've been sick for like 2 months. I finally get a doctor's 00:05:53.520 --> 00:05:58.479 appointment with my family doctor and you don't you make me not go because of 00:05:56.720 --> 00:06:02.800 masking tape. Well, I think you're I think Look, okay, but we were supposed 00:06:00.800 --> 00:06:07.039 to have you do the spot and you were supposed to do Josh's thing. I get 00:06:05.120 --> 00:06:14.560 dragged into the office and I have to film this. It's not like I wanted to 00:06:10.680 --> 00:06:19.400 like Okay, you know what? Just I'm done. 00:06:14.560 --> 00:06:19.400 We'll talk later. No, I'm just done. 00:06:23.759 --> 00:06:26.759 You 00:06:28.680 --> 00:06:34.319 um so sorry. I hope that wasn't too awkward. Guys, like the video if you 00:06:32.880 --> 00:06:37.600 liked it. Dislike it if you disliked it. Leave a comment. Um, if you have 00:06:35.919 --> 00:06:42.479 suggestions for future fastest possibles that I guess won't be hosted by Luke.