The language courses. Video. Anytime anywhere. W. Can you spot the fake fake videos fake by a high esteem deceptively real and theyre a serious threat to society in order to expose steve thanks to experts are embroiled in that battle in the name of science while one of them fakes the other on math we met up with both of them to fix our topic today im sure. Some defects are funny others are really mean its fun. The netting how researchers can manipulate videos with the help of Artificial Intelligence i tried out what it was like to control someone elses face. Check me out as Scarlett Johansson. Personally. Or. Its pretty impressive to see how easy that was with the right technology and in real time to i dont even want to imagine what could happen if a fake president declared war how can we stop fake news or deep fakes thats what scientists are asking themselves to we met the 2 most renowned the fake experts in the us their academic competition is advancing research on the issue. Most consider how lead to be the best fake artist in the world the german Computer Scientist teaches at the university of Southern California and manipulates videos for science you know as hard as it sounds were also trying to advance it in order to be able to detect them right because if you dont understand how theyre being generated if you dont have the capability of generating realistic you face there is no way to effectively detect those either his opponent honey fareed uncovers deep makes a professor at the university of california berkeley hes a world leading expert in Digital Forensics. I think the biggest obstacle in detection is that the field is moving so quickly every 3 months you see new advances in the creation of content so our adversary if i can call them that is not static they are changing and theyre changing really fast so we start developing these new friends of technology and always so theres a whole new way of creating deep fakes and now we have to worry about that as well its crazy to see how quickly this technology is that bouncing were used to it from photos technically were all able to also. Them at home with basic software but the deals a few years ago moving images were prove that something had really happened deep fakes have taken this to another level theres growing fear that from information is circulating without anyone noticing especially when it comes to big events like the u. S. President ial elections whether its photos or videos thank you isnt new but its Getting Better as both experts warn weve always had fake news from the day of the Printing Press being developed but heres the difference we this whats new here is not we can create fake news we can create fake averages we can create free videos whats new here is the sophistication with which we can do it the democratization of access so almost anybody on the internet can do it but heres the real issue instant global publication the most scary thing is that it feels like youre stealing someones identity and you can put anything anyone to their mouth and you can make them do whatever you want so far deep technology is used mainly for one purpose porn one study shows that this amounts to 96 percent of the dea fakes online today stars like emma watson and Scarlett Johansson were some of the 1st prominent victims their faces were super imposed on to pornographic videos with the help of ai the program enabling such fakes was 1st uploaded to the online forum reddit the Anonymous User called the fakes was quickly banned but other users took over his Software Code and kept expanding it today Similar Software is so freely Available Online the name is a combination of deep as and deep learning technology and fake but how exactly do defense work how hard is it to make them look real the effect expert how lete explained it to me in los angeles. Many deeds tricks are based on socalled guns out. Rhythms that are on supervised meaning they learn without human guidance instead theyre trained with raw data real photos for example. Youre not modeling anything youre just collecting a bunch of pieces all you need just to make sure they are aligned like this and you crop the feast red and youre manually you would try to make sure that theres a balance of different any condition different expressions and it just learns that by itself this is what is so powerful about the steep learning based approaches. The novelty in this approach is that to algorithms Work Together what generates the or the checks almost like how libyan honey fareed. Its like an arms race read you have a generator that tries to generate some images in the beginning you know its just like some random pixels but then what you try to do is you tell instead of telling it where to improve like traditional supervised learning just how it no its not good enough so you can improve improve again until you would for the discriminator so theyre discriminating cant tell anymore what a difference is in itself than proves the algorithms work in their own without human assistance. So that this one minute long video took 4 days to make its a deep faith generated by how little in this team. To create it they use face what technology and videos of comedians imitating us politicians. Are the biggest but this is the face of the algorithms were fed 5000 images but theres no secret recipe for the perfect. Sometimes we dont know why we add more data and it gets worse so theres a little bit of. Black magic and you know cooking over there weve all got photos on social media right i think its pretty scary to think that somebody could use my pictures to make a fake video of me thats why methods to flecked the fakes quickly and reliably are becoming more and more important tech giants like facebook and microsoft have launched the deep fake detection challenge with a prize of nearly 1000000 s. Here at the w. Weve developed a very few cation program through the media which can help analyze their talk content theres also a number of specialist start ups on the issue how to for read is an expert in Digital Forensics he uses how these defects to find his erf occasional programs and hes always on the lookout for the best way to use ai but ai approach is exactly what you think it is you get a bunch of real videos you get a bunch of fake videos and you teach them in Machine Learning system to tell the difference but thats a sensitive subject since deep fakes are also created with Machine Learning a detection toll could just as well be used to generate better fakes but i need to read goes beyond the ordinary approach instead of just relying on ai he and his team analyze videos to identify peoples unique facial features we try to understand how do people move how does the mouth move how does the expression change in part because we think that those are properties of the video that the Machine Learning cant currently airlines and that means we are less vulnerable to counterattack so any time you build forensic techniques you always have to ask yourself how will this be used to make better fakes this grid visualizes aspects such as Head Movement line of vision and facial expressions in order to spot differences honey for rican pairs a real video with a video that was possibly altered this method detects about 96 percent of faked footage. One possible use for this might be to integrate Detection Software into social Networks Algorithms in the future google has already provided scientists with some 3000 manipulated videos to help improve detectors. To make these 3000. 00 videos google employed 20 at actors and then manipulated the images with algorithms so tech time seem to be taking deep thanks faeries seriously and its no surprise experts predict the damage caused by manipulated audio and video files could range as high as nearly a quarter 1000000000 euros and 2020 and whats worse theres no Perfect Program to help us detect deep fakes yet but every new technology has a good side to right the fakes also offer f. U. Exciting possibilities for the future a magic you can have a customized movie where when you download a movie you can say i want this actor or this actress to be in the movie instead of who it is that sort of need this is a huge opportunity for the movie industry soon visual effects could be much cheaper to produce but so far deep technology cannot create images in the same High Resolution as movies. But its good enough for you tube videos. Which is so nicolas cage good kirsten the godfather. Fake technology could also bring celebrities back to life like the spanish painter salvador dali. And the dali museum in florida visitors can even pose for a picture with him. I think one of the most interesting ones is in Hollywood Studios for creating movies so if we have a movie that is filmed in german and we want to listen to it in english you create a lip sync deep fake where the person now it looks like theyre speaking english but super cool like this Awareness Campaign and not in languages leiria isnt just any. Everything he said. As you. Do you know what is being. Done. To make its creators unadmitted a 3 d. Model of David Beckhams face wow thats cool so you might be able to watch me host shift in hindi or kiswahili completely in sync and perhaps even life its just a matter of time before were able to manipulate 4 k. Videos in real time its just up to computers getting a little bit faster but back to more serious matters people around the world need to know about this new technology how leap presented his face what studio at the World Economic forum in davos the most important thing is actually that people know that this is possible right if they wouldnt know they could easily be fooled if they know that their ways to actually create the to manipulation is extremely believable then you know we will have some way of protection honestly i have to say that both experts hunted for reid and howdy have managed to call my worries about the fake a little fake use has always been a huge problem not just today but the Perfect Technology is not even necessary for it. The more people are aware of the facts and the possibilities to manipulate views the better they can deal with misinformation is something true or false thats not a question of deep fakes what do you think are you scared of manipulated views or is this all just a storm in a teacup let us know what you think you can do this on you tube too there you can find a video of me getting my very own 3 d. Avatar and how nice lap in los angeles i even sat in the same chair as will smith the hardest part was i had to make 26 different faces take it out on our Youtube Channel thanks for watching and see you next time. Having to buy is a savior of the forest. He calls 210 acres of land in central gonna his own hes recall debating and conserving wood and teaching how to practice Sustainable Forestry is all about training there becomes our people. Bad do it themselves still going to have a ladies come fall and. For. The next. June the city of lovers. Romeo and juliet brought to mind. Their story continues. To relax receives a good 10000. 00 letters a year with despair. Every single letter receives an answer. To used to. 13 its own d w. Whos the world becoming less western what does it mean for the world. The west leaves the stage where theres a key question disappears Munich Security Conference join us for our coverage of the eve security conference 2020 today on d w. Hello everyone and welcome to this new edition of eco africa the environment magazine brought to you by channels t. V. Here in nigeria and t. V. In uganda and germanys door chavela im now inside were coming to you from lagos and joining me of course is my colleague sandra teen o. B. O. And hello there sandra. And hello