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HDCP is an anti-piracy protocol built into the HDMI cable standard, but it actually does not work well and ruins the viewing experience. Read on to explain how HDCP works, why it can damage the TV and how to repair it.
HDCP (High-bandwidth Digital Content Protection) is a form of digital rights management (DRM). The DRM protocol is designed to protect content creators and distributors from piracy. Different companies and industries use different agreements, but the basic premise is the same: DRM locks in the purchases you make to yourself and your equipment. When you buy a movie on iTunes and can only play the movie on the device that uses your account, you encounter DRM.
Content creators and publishers
Because of the high cost of creating and distributing content, you can get some protection. The problem is that DRM usually makes the lives of honest paying users more difficult-in many cases, it completely destroys the user experience-and does not actually serve as a deterrent. This is the trouble we have encountered in games that require an authorized server to run. If the company goes bankrupt, the authorization server will go bankrupt, and the game will suddenly fail.
In the case of the HDMI standard and digital video, the HDCP DRM standard has brought many unfortunate headaches to ordinary old users, who just want to enjoy their TV and engage in other legal activities.
HDCP is developed by Intel and is used not only with HDMI, but also with various digital video standards such as DisplayPort and Digital Visual Interface (DVI). It provides an encrypted connection between a content output device (such as a Blu-ray player, cable box or streaming device) on one end and a receiving device (such as an HDTV or audio video receiver) on the other end.
HDCP is ubiquitous and built into devices such as Blu-ray players, cable boxes and satellite TV receivers, and built into streaming video devices such as Roku, Chromecast, and Amazon Fire TV. It is also built into laptops and computer hardware, DVRs and other modern HDMI devices.
Although the basic encryption and protocol of HDCP are very complicated and are beyond the scope of this article, the basic premise of its working principle is very simple. There is a licensing agency that issues licenses for HDCP devices. Every HDCP-compatible device (such as a Blu-ray player or Xbox) has a license and can communicate with the receiving device at the other end of the HDMI cable.
The output device displays "Hey, display! Are you HDCP compliant? This is my license, please tell me your license!" The display (or other HDCP compliant device) returns "Why, I am legal! This is my license" !" When the process takes effect, it will happen within a thousandth of a second, and you (the consumer) will not even notice. When you turn on the power of your Blu-ray player or DVR, you can work perfectly with HDTV and live a happy life without even knowing what HDCP is.
Unfortunately, in many cases, HDCP prevents consumers from using their devices and content for completely legal things. If any device in the chain does not comply with the HDCP standard, the video stream will fail.
For example, if you have an older HDTV TV that is not HDCP compatible, you will not be able to watch
Comply with HDCP content. If you plug an HDCP compatible device into an incompatible device, you will see a black screen or error message, such as "Error: Non-HDCP output", "Unauthorized HDCP" or "HDCP error".
Want to turn an old monitor with integrated speakers into a cheap little video box with Chromecast? Sorry, old monitors (despite having HDMI ports) are most likely not HDCP compliant. Unless you want to dedicate a complete computer to the project, you won't be doing any streaming on it.
Want to record your video game sessions or live stream them in real time? Hit or miss. Host manufacturers have done a better job recognizing that players want to record and transmit their content, but HDCP still has problems. The Sony Playstation lineup is a perfect example of solving this problem. Although Sony did release an update for PlayStation 4 in 2014, the update unlocked HDCP when actually playing games, but because the HDCP output is locked at the PS3 chip level, they cannot provide the same update for PlayStation 3. Their only suggestion is to buy capture devices that support component cables and use them instead of HDMI.
Even if we are not actively watching TV or games, we
The HDCP was found to be annoying and disturbing. We have written various tutorials and reviews on How-To Geek, involving HDMI-based products such as Amazon Fire TV. Do you know what cannot be captured due to HDCP? On-screen menu when loading video content. There is a content protection system that prevents you from viewing and promoting streaming devices that can legally provide content to millions of paying customers, which is very unpleasant.
Connecting a Blu-ray player to an old TV, trying to recycle old computer monitors to a small streaming station powered by Chromecast, recording and playing video game streams, or trying to capture menus and screenshots, there is nothing illegal or unethical Provisions. Writing tutorials and guides, but because of the flaws in the DRM protocol, anyone who wants any or all of these things is kept in the dark.
No one needs to buy a new TV, upgrade its perfect audio and video receiver, or spend a lot of money to solve problems that shouldn't exist in the first place. Unfortunately, the only official way to comply with HDCP is to purchase HDCP-compatible equipment.
The most absurd thing about HDCP protection schemes is that there is no HDCP-compliant method that can circumvent it in legitimate use cases. Have
The method recognized or supported by the HDCP authority, if consumers have older devices or legal non-piracy needs to interact with HDCP-compatible devices, they can help consumers in any way.
In order to further aggravate the insult to people, the HDCP standard has been compromised for many years. Manufacturers continue to pay for licenses and include HDCP in their products, not because it actually helps prevent piracy, but because they don't want to obtain licensing agencies and anti-piracy lobbying. So, how do you deal with the obsolescence of HDCP and the now destroyed chaos?
The only way to buy a new TV or abandon a video game project is to solve the HDCP compliance problem, and that is to buy a low-cost HDMI splitter that will ignore HDCP requests.
We really hope we are joking, but this is a secret media center element that can help thousands of consumers, and when we need to take a screenshot of a screen menu to show a menu, we are in How-To Geek The same goes for the secret elements used. The product we are reviewing.
Specifically, we use
($20), because even in cheap HDMI splitters, there is no consistency as to whether they comply with the HDMI standard (even sometimes in products from the same company). Reading carefully and using the Amazon review search function can be of great help in finding cheap separators that other consumers have successfully used.
To use the splitter, simply place it between the output and display device. For example, suppose you have a simple setup and just want to plug the Chromecast into an old monitor. Instead, you can plug the Chromecast into the input on the HDMI splitter, and then use the HDMI cable to connect the output on the splitter to the display. If you have a new audio and video receiver that cannot be used with the old HDTV, please plug all HDMI devices into the receiver, and then place the HDMI splitter between the receiver and the display.
In the photo above, you can see a simple setting on our table, which is used to capture menus and screenshots when viewing HDMI devices. In this example, we feed an Amazon Fire TV Stick into the ViewHD splitter, and then pass the signal to Roxio GameCapHD Pro so that we can capture screenshots on the computer. The place where we put GameCapHD Pro in the chain is where the vast majority of users looking for this solution can plug in the TV.
This is our attempt to capture good screenshots for the tutorial before dealing with HDCP issues.
You can see that screenshots like this will be useless for our purposes. No one wants to see the menu of the device they are considering buying looks like a big ugly error message on the back. In this example, even if we are using a capture tool, you can see exactly what a home user with an HDTV that does not comply with the HDCP specification sees: the part of the video that is not protected by HDCP (menu bar and pause button) ) Delivered, but the actual content has been deleted.
This is the exact same screenshot, but the signal is passed through the splitter, thus eliminating the nonsense of HDCP.
As you can imagine, given that we are keen to provide clever and thoughtful solutions to problems that plague people, how absurd we found that the solution to problems that shouldn’t even exist is to “buy substandard equipment and ignore faulty equipment . Agreement.” Nevertheless, this is exactly what consumers have discovered, and fortunately, whether through bad design or intentional design, there are products that can attract new media players to dialogue with old HDTVs.
Are there pressing technical issues? Send us an email to ask @howtogeek and we will do our best to help you.
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Elgato HD60 S is a clever little black box that can immediately be here and capture what is happening on the display. The name Elgato is widely known among gamers-especially to prove that "they beat the machine".
There was a time when you needed to wait patiently in the gaming hall and watch other people's games before it was your turn. These moments may be tense and triumphant, but they are mainly a barrier between you and where you want to be.
Nowadays, everything has to do with gameplay on PCs, Macs, consoles, mobile devices or the cloud. Happily, we are now living in an era where people are actively seeking online experiences. They watch people play games and comment on games every day. It sounds ridiculous, but some popular streamers earn six figures per month. Streaming games can be very profitable.
Elgato HD60 S is
Video capture "box", which can capture game video and images of almost all objects on the screen, up to
(The number of frames per second).
For clarity, it will digitally capture everything displayed on the screen, and then your PC/Mac will encode/render the final edited material into H.264/5 or VP8/9 format. It has no built-in encoding.
Physically speaking, the HD60 S is a small, rounded rectangle, weighing about 100g, about the size of a wallet. It is made of sturdy matte plastic, which strikes a good balance between high-quality appearance and durability.
It is bundled with Elgato's free Game Capture HD companion software and provides everything you need to set up and stream in minutes.
We call it entry level simply because it is limited to
Capture via USB-C. If you want to capture a higher resolution, the 4K60Pro model can be installed in a desktop PC with a PCIe x4 channel expansion slot and can reach 140Mbps.
To improve your skills, you can plug the HDMI cable of your PC, Mac, PlayStation 4, Xbox One, Nintendo Switch, Android or iPhone smartphone (if they support video output and are not protected by HDCP copy) into the Elgato HDMI-IN port.
Then you plug the HDMI cable into its HDMI output port and the display to see what is happening (video and audio pass-through).
Then, use Elgato's video capture software to plug the USB-C 3.0 cable into the PC or Mac. USB-C can provide up to 40Mbps power and data capture. now it's right!
At the top is a discreet light strip-a simple visual indicator. When the strip is white, it means it is connected. When red, it means recording or streaming.
There is also a 3.5 mm audio jack to listen to any sound in the video stream.
Please note that this is a pass-through device, you can plug it into any 1080p monitor, or you can disconnect it and put it in your pocket or backpack.
Surprisingly, it can get along with Intel i5-4XXX, quad-core, 4GB and hard drives. It can use embedded Intel HD/UHD or AMD Radeon or NVIDIA GPU. It must have a USB 3.0 port.
We tested it with 4K Lenovo Yoga 920 (review
) And Huawei 3K MateBook X Pro (review
), and perfectly captured 16:9, 1080p (1K video). We also tried using a USB-A 3.0 to USB-C cable, a USB-C to HDMI cable, and testing through a Thunderbolt 3 docking station, which are all good.
When we use the 8th generation Intel i5 and i7 processors, we suspect that its success depends more on a) the device’s native video encoding, and b) getting the speed from the USB port, and devices equipped with USB-C will be more Work well. Players should have no doubts about powerful equipment.
A file size of 40 megabits per second (5MB per second) can be very large. One hour of uncompressed capture time is 15-20GB. You can then edit, render, and encode, so the faster the PC and disk, the better. Or, you will drink a lot of beverages of your choice while waiting for the finished product.
In theory, you can play copyright-protected DVD/Blu-ray or streaming video content on the monitor. All device manufacturers have agreed to implement HDCP (High-bandwidth Digital Content Protection), an anti-piracy protocol built into HDMI, DVI, and DisplayPort cable standards. When the Elgato HD60 S detects HDCP content (copy protected), it will not capture this content at all.
Now, we do not advocate piracy in any form, but sometimes HDCP may be too strict. Most mobile phones and game consoles have HDCP protection, but you want to stream from it.
You can solve this problem by purchasing an HDMI splitter, which separates the HDCP signal from the stream. You can read more
, And we need to test on multiple devices. With it, we can record from Android and iOS devices.
Although you can use expensive and powerful capture software, Elgato's products do not disappoint.
It supports recording the recorded content to your computer, as well as real-time streaming to accounts on Twitch, YouTube, Restream.io, Ustream, Facebook and any other platforms that support RTMP: // streaming protocol. By connecting your account to Elgato's software, you can easily switch between streaming platforms through the drop-down box.
It has all the necessary functions-bit rate control, output/recording quality and frame rate, and audio mixing control between game audio and adding voice comments. But it also has many professional features, such as themed scenes and graphics, which you can superimpose in the stream.
I mean customization: you can add a webcam so that people can watch your reaction to the game, insert custom pictures and text, and even add animations to subscribers or other activities in the channel feed. For gamers who are eager to promote themselves and build brand channels, these custom tools are extremely valuable.
If you want to record content for editing on platforms such as YouTube, the software includes a simple timeline trimming, arranging and editing tools. However, if you want to produce clear video content, you need to export the captured content to a dedicated video editing program. It will not use it for gorgeous YouTube content.
My test is to see if the Elgato HD60 S affects the game speed-lag.
After connecting the card, no lag is detected on the TV screen
The capture window of Game Capture HD software has a small lag
This provides a natural gaming experience and allows me to continue to participate in the game.
After recording, the file is immediately exported to the library folder and is ready for editing. I shot this footage in the "best" setting. The overall quality and smoothness of the final video left a deep impression on me. Overall, the experience is easy and very effective.
Elgato HD60 S is ideal for users who want to start streaming or gaming YouTube channels.
Because of its overall ease of use, easy-to-access and easy-to-browse software, and excellent capture performance, it is recommended by us as an entry-level device. For most people, this box is what you need to start capturing and producing great content.
For those streaming media seeking the maximum bit rate, 40 Mbps may disrupt the transaction. This is why Elgato offers other alternatives.
Price: The retail price of Elgato HD60 S is $269
. A savvy online buyer may save a few dollars on this, but make sure you consider the local warranty, shipping, and taxes.
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How do you display movies to users online without letting them copy them? For streaming services such as iTunes, Amazon and Netflix, the answer is High-bandwidth Digital Content Protection (HDCP), which is a system owned by Intel that can encrypt the video stream to the screen to prevent the video stream from being Intercept and copy. Conventional means. For a long time, it has been possible to strip HDCP encryption through analog conversion or other means, but legal threats have prevented the spread of this strategy.
Now Intel and Warner Bros. are accusing a Chinese company
In the complaint
In the Federal Court. The complaint stated that a Shenzhen company called LegendSky produces HDFury series devices, which are “mainly designed or produced for the purpose of circumventing HDCP” and “except for circumventing HDCP, they have only limited commercial significance or uses. The complaint cited many product descriptions, among which LegendSky showed HDFury as a way to access protected versions of content that is not protected by HDCP.
Piracy is not the only reason you might want to delete HDCP. Certain HDMI splitters have cancelled protection measures for simple engineering reasons, thereby avoiding similar lawsuits, simply because they did not promote the feature. The encryption technology behind HDCP has been cracked for more than five years, so HDFury devices are unlikely to cause any new damage to the principles behind the system. The plaintiff is seeking damages, fair relief, and an injunction prohibiting further sales of the equipment.
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If you wish to enter Stadia and stream your games to
. Well, I received some bad news in the form of your favorite capture device, which is not available on Stadia at all.
Google’s Stadia is now in the hands of reviewers and those who pay for Stadia Founders Edition. I'm not sure how many people try to capture material from their TVs and monitors. This is exactly the first thing I tried
It was served (don't judge me anymore!). To say the least, the results were disappointing.
I thought a lot and found that we need Chromecast Ultra to play Stadia on any device other than a mobile phone or PC. Despite sending a lot of inquiries to Google (and none of them answered), I still hope there is some way. Sadly, it does not seem to be the case at the moment.
After plugging my Chromecast into my 4K HDMI switch, the switch sends a few wires from the console settings to the PC. I was welcomed, no, this is not the main signal that is happening.
No, I cannot use expensive capture equipment at the same time.
For those who want to know which devices I have used, this will include
Live Gamer Mini and Elgato's HD60S.
Now, this problem can be overcome by using an HDMI splitter that strips the HDCP signal. However, because it can be used to "steal" the content of media streaming services, there are almost no products available for sale. That said, I won't tell you what are there, but I believe you can find it yourself.
What does capturing the game screen of Stadia games mean for the future? At present, this is very serious, because our only way is to use OBS, XSPlit and other software to capture gameplay or two PC settings. However, since Stadia's PC performance is not yet outstanding, I would rather not go this way unless I really need to do it.
Of course, you can use Stadia's built-in features to record gameplay. Except for the moment, it is limited to 30 seconds capture and a lower start resolution. I have contacted Google again to see if there are any plans to add this feature or add support for capture cards in the future.
Now, I think we still cannot record on PC.
Keith Mitchell is the founder and editor-in-chief of The Outerhaven. During the day, I was a discouraged IT professional, but after being tempered at 9-5, he was a passionate video game enthusiast. I like to play the "Dark Soul" series and have been playing games since he was 6 years old. Yes, I am a black game reporter.
This is sad, and it makes it more difficult for people like me to circulate actual gameplay to help the sales arena.