Wi-Fi CERTIFIED Miracast
Now showing on screens everywhere
Consumers have embraced multimedia content on their devices. From video streaming and photo sharing to a world of apps, smartphones, tablets, and TVs are connecting and keeping us entertained. However, the content is often trapped on a single device, limiting the ability to view your entertainment where you want.
Easy to use, multi-vendor wireless display
Wi-Fi CERTIFIED Miracast™ is a groundbreaking solution for seamlessly displaying multimedia between devices, without cables or a network connection. Users can do things like view pictures from a smartphone on a big screen television, share a laptop screen with the conference room projector in real-time, and watch live programs from a home cable box on a tablet. Miracast connections are formed using Wi-Fi CERTIFIED Wi-Fi Direct®, so access to a Wi-Fi® network is not needed – the ability to connect is inside Miracast-certified devices.
Miracast is an industry-wide solution, so the technology works well across devices, regardless of brand. Connections are easy to set up and use since the devices choose the appropriate settings automatically. Miracast supports premium content—like Blu-ray feature films, live television shows and sports, or any other copy-protected premium content—allowing you to watch what you want, where you want.
- Wi-Fi Display Technical Specification v2.0
- Technical Note: Wi-Fi CERTIFIED Miracast™ HDCP Interoperability Issue
- Wi-Fi CERTIFIED Miracast™: Extending the Wi-Fi® experience to seamless video display - Consumer (2013)
- Wi-Fi CERTIFIED Miracast™: Extending the Wi-Fi experience to seamless video display - Industry (2012)
- Wi-Fi CERTIFIED™ TDLS: Easy-to-Use, Security-Protected Direct Links to Improve Performance of Wi-Fi® Devices (2012)
- How do I communicate using the Miracast trademark?
The term “Wi-Fi CERTIFIED Miracast®” designates products that have been certified by Wi-Fi Alliance, and is the commercial name for the certification program. The underlying specification or technology is called “Wi-Fi Alliance Wi-Fi Display Specification”. Only products which have completed and passed Wi-Fi certification to the Wi-Fi Display test plan may use the Miracast name. On second instance, you may refer to “Miracast” products (dropping the term Wi-Fi CERTIFIED). There is no special logo or visual indicator for Miracast.
- Does Miracast support devices like wireless speakers? (audio only)
Audio-only devices are not part of the Miracast certification program.
- How does Miracast protect premium content?
Miracast supports High-bandwidth Digital Content Protection (HDCP) 2.0/2.1. HDCP 2.x is a wireless adaptation of the same trusted content protection mechanisms widely used for cabled interfaces, providing diversity in premium content options. This feature is designed to protect the digital rights of content owners and to encourage their efforts to make their content available.
- What formats does Miracast support?
For video, Miracast supports the ITU-T H.264 video codec (AKA Advanced Video Coding [AVC]) for high-definition video. It supports the Constrained Baseline Profile (CBP) and the Miracast-specific Constrained High Profile (CHP), at levels ranging from 3.1 to 4.2. Supported display resolutions include common Consumer Electronics Association (CEA) formats, Video Electronics Standards Association (VESA) formats, and handheld formats.
For audio, Miracast supports a number of Linear Pulse-Code Modulation (LPCM), Advanced Audio Coding (AAC), and Dolby Advanced Codec 3 (AC3) modes.
- How is Miracast related to Wi-Fi Direct?
Wi-Fi Direct allows devices to connect directly to each other, without the need for a Wi-Fi AP, and requiring just the push of a button, the entry of a PIN, or tapping two NFC-capable devices together. Wi-Fi Direct allows source and display devices to discover one another and provides the underlying device-to-device connectivity for Miracast. Miracast builds upon Wi-Fi Direct with mechanisms to negotiate video capabilities, setup content protection (if needed), stream content, and maintain the video session.
- What features does Miracast certification test?
Miracast certification testing ensures that devices interoperate across vendors, provide simplified discovery and setup, and implement content protections if premium content is supported. Miracast devices are also tested for implementation of WPA2™ security.
- Must both the content source and display be Miracast devices?
To enjoy Miracast, both the display and the source devices must be certified for Miracast. Miracast may be used on devices without embedded Wi-Fi through the use of a Miracast-certified adapter that supports an interface such as High-Definition Multimedia Interface (HDMI) or Universal Serial Bus (USB).
- What types of equipment are tested?
Miracast is an optional certification program for video-capable devices, such as TVs, handsets, tablets, laptops, over-the-top set-top boxes, cameras and projectors.
- What is the difference between Miracast and Wi-Fi Display?
Miracast is the brand for the certification program operated by Wi-Fi Alliance. Devices that pass this certification testing can be referred to as “Miracast devices”. Miracast certification is based on the Wi-Fi Alliance Wi-Fi Display Specification. This is the underlying technological specification developed by Wi-Fi Alliance members, and is copyrighted and owned by Wi-Fi Alliance.
- How do I activate TDLS?
Two Wi-Fi CERTIFIED TDLS devices will automatically form a direct connection after linking to the Wi-Fi network. No user interaction is required.
- What is the difference between TDLS and Wi-Fi Direct?
TDLS operates in the background of a Wi-Fi network to optimize performance, while Wi-Fi Direct-certified devices can quickly connect to one another while on the go, even when a Wi-Fi network is unavailable. Many devices will be certified for both solutions and use them in different situations.
- What is Wi-Fi CERTIFIED TDLS?
Wi-Fi CERTIFIED TDLS devices implement technology enabling them to link directly to one another when connected to a traditional Wi-Fi network. Wi-Fi CERTIFIED TDLS devices can set up secure links and transfer data directly between them. TDLS-linked devices benefit from an optimized connection to do things such as streaming video or synching content, without burdening the network as a whole.
- How does Wi-Fi Alliance help ensure product compatibility and a good user experience for certified products?
Compatibility and quality are achieved through rigorous testing of Wi-Fi products. Consumers should always look for the Wi-Fi CERTIFIED logo to ensure the best user experience possible.
- Are Wi-Fi CERTIFIED products protected by security?
Yes. All Wi-Fi CERTIFIED products are tested for the latest generation of Wi-Fi security: WPA2 (Wi-Fi Protected Access 2). The only way to be sure that product meets these standards is to only purchase Wi-Fi CERTIFIED products.