Casting in Windows 10 greatly improved. MS Miracast / Actiontec test.

Posted on 01 May 2015, Last updated on 30 January 2020 by

‘Play-To’ and ‘Project To’ gets a big work-over in Windows 10 with continued focus on Miracast.


We’ve been tracking wireless display ever since it was an Ultrabook feature. [Sept 2011.] Intel’s WiDI screen casting hardware was always a step ahead of the Miracast implementation it was built around but it was largely irrelevant because Windows 8 only ever supported Miracast. It looks like that performance gap will be closed now though because Microsoft are adding extensions and improvements to Windows 10 Casting (AKA MS Miracast.) The user experience will be better, paring over WiFi Direct will be faster and there’ll be a back-channel for user interface control (touchscreens.) We’ve tested it and it’s true.

Update: DIAL protocol tested in Windows 10.

Miracast supports up to 1920 x 1200 60 fps source streams transmitted using the (lossy) MPEG2 standard. There’s 2-channel compressed or uncompressed digital audio or Dolby AC3 streams for surround sound. HDCP is supported for content protection. The optional back channel (UIBC) can be used for human-interface devices or for general data, eg. USB. There’s obviously a latency introduced into the stream and we’ve seen that range down to 70ms in the WiDi implementation so this is not for action-gaming.

We tested the latest implementation on Windows 10 (Build 10074) and an Actiontec ScreenBeam Pro with V1.2.7.0 firmware and the results are in a video below. We couldn’t find the beta software mentioned by Microsoft but were impressed at the ease of setup and the very low latency on the mouse movements. Larger screen changes will increase the latency and our test showed around 120 ms in a stopwatch image test.

Miracast on Windows 10 with Actiontec Screenbeam Pro
Miracast on Windows 10 with Actiontec Screenbeam Pro

Demo: MS Miracast in Windows 10 with Actiontec Screenbeam Pro

MS Miracast latency 119ms
MS Miracast latency 119ms

The Actiontec Screenbeam Mini has been available in the USA for $39 but it’s currently $49. Check our Amazon link on the right for the latest US price.

In the presentation at BUILD Microsoft demonstrated direct-casting for media elements which makes the process even simpler. These are being built into the Microsoft Edge browser (was Project Spartan.) Device picker elements are available too. If you’re wondering about Chromecast-style casting where the controller instructs the remote device to run an application (and stream the content directly from the source to the device and not via a screen cast) then you’ll be pleased to know that the DIAL (Discovery and Launch) protocol is being supported. Surely this means that Microsoft will bring out an Xboxcast device to compete with Amazon and Google soon but today it means that you can remotely start the YouTube and Netflix apps on an Xbox One.

Update: DIAL protocol tested in Windows 10.

media control win 10 2

Demo and overview from BUILD 2015. (Slides and video)

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