Miracast

随时随地在Wi-Fi®设备上分享高清内容

Wi-Fi CERTIFIED Miracast™支持在Miracast®设备之间无缝显示多媒体内容。Miracast使用户能够通过无线连接在Wi-Fi设备之间分享多媒体内容,包括高分辨率图片和高清(HD)视频内容,即使在没有Wi-Fi网络可用时也一样。

Miracast:

  • 从移动设备向汽车信息娱乐系统发送内容;
  • 与会议室中的投影仪实时分享笔记本电脑显示屏上的内容;
  • 从平板电脑向HD电视机传送HD和4K超高清(Ultra HD)电影;
  • 在大屏幕电视机上显示来自智能手机、电脑或平板电脑的照片;
  • 支持多种音频/视频格式,以延长移动设备的电池寿命。

Miracast还支持优质内容,例如蓝光电影、电视节目和赛事直播以及其他受到版权保护的优质内容,使用户能够随时随地看到想看的内容。

基于标准的Miracast无需导线连接就可提升生活质量

Miracast是一种行业解决方案,使技术能够横跨不同类型的设备和厂商发挥作用。连接很容易建立和使用,因为Miracast设备自动选择恰当的设置。Miracast可通过网络基础设施或Wi-Fi Direct®连接两个设备。当要分享的内容存储在Miracast认证设备上时,例如从智能手机到汽车信息娱乐系统显示屏,不需要Wi-Fi网络连接。

只有携带Wi-Fi CERTIFIED Miracast标志的设备才是经过Wi-Fi Alliance®认证的设备,这种设备能够很好地与其他Wi-Fi CERTIFIED™设备配合使用、采用了最新的安全保护技术并可提供高品质用户体验。

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Frequently Asked Questions
  • Are Wi-Fi CERTIFIED products protected by security?

    As of July 1, 2020, all new Wi-Fi CERTIFIED devices require WPA3. The only way to be sure that a product meets the latest security standards is to purchase only Wi-Fi CERTIFIED products.

  • How does Wi-Fi Alliance help ensure product compatibility and a good user experience for certified products?

    Compatibility and quality are achieved through testing of Wi-Fi products. Consumers should always look for the Wi-Fi CERTIFIED logo to ensure the best user experience possible.

  • What has changed in Miracast since its original release?

    New enhancements focus on high-definition (HD) content, increased performance, and better battery life for Miracast devices.

  • Is a Wi-Fi connection needed to stream a video from the internet?

    Miracast is unique to other wireless display solutions in that a direct peer-to-peer connection between two devices may be formed to share content residing on the source device, without the need for a Wi-Fi network. If streaming content from the internet, a network connection is required.

  • 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 provides industry-standard protection of premium content through support of High-bandwidth Digital Content Protection (HDCP). HDCP 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?

    Miracast supports many commonly used audio/video format.  For a complete list, download the Miracast Technical Overview.

  • 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 access point (AP). It simply requires the push of a button or the entry of a PIN. 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 includes testing for audio/video (A/V) latency, quality, and synchronization offset. Testing ensures that devices operate across vendors, provide simplified discovery and setup, meet the minimum display resolution requirement, and implement content protection (when implemented). Miracast devices are also tested for implementation of WPA2™ security. Wi-Fi Alliance members may view details on certification testing in the Wi-Fi CERTIFIED Miracast Test Plan.

  • Must both the content source and display be Miracast devices?

    Both the display and the source devices must be Miracast certified. Miracast may be used on devices without embedded Wi-Fi capability by using 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 certification is available for video-capable devices such as TVs, handsets, tablets, laptops, 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 “Wi-Fi CERTIFIED Miracast™ devices” or “Miracast® devices”. Miracast certification is based on the Wi-Fi Alliance Wi-Fi Display Technical Specification. This is the underlying 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.