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The custom application would have to select the unprocessed stream and handle it. MF_SD_VIDEO_SPHERICAL_FORMAT to MFVideoSphericalFormat_Unsupported(0). To leverage custom apps which perform stitching as well, an IHV has the option of exposing another unstitched 360 video media type with attributes set as The above property already exists as a part of mfidl.idl. MFVideoSphericalFormat_Equirectangular (1) The following table shows the required stream attribute to identify a spherical frame source: Property name and GUID The DMFT will also populate the following stream and media type properties (as shown in the table below) to identify them as 360 content streams.Įven if the IHV decides to have the stitching done in the camera hardware, a DMFT is still a mandatory requirement to populate the stream and mediatype attribute properties for 360 video. It may be preferable to leverage the DMFT for this purpose, as it will allow use of hardware resources like GPU for efficient processing. The stitching and conversion to equirectangular frames can take place in the camera hardware or inside the DMFT.
The DMFT can be installed and associated with the particular camera via the use of INF file for driver extension as described in the example. The following diagram illustrates the relationship of the DMFT to the 360 camera stack:ģ60 camera IHVs will publish a DMFT that will expose 360 video streams providing spherical frames of a defined format. The effect can leverage the attributes on the mediatype to identify equirectangular frames. The application may implement and insert an effect to generate a projection. It is up to the 360 camera IHV to implement a stream with a projected view and expose Pan/Tilt/Zoom controls. An application also needs to explicitly handle UI interaction for panning around, via the MediaPlaybackSphericalVideoProjection.ViewOrientation quaternion.įor 360 video record, a capture application does not need to be configured explicitly for 360 content if it is using MediaCapture WinRT APIs, as the spherical format is implicitly passed on to the record sink and written to the file header.įor 360 photo capture, an application needs to explicitly add the appropriate standardized metadata that specifies its spherical format using available WIC WinRT APIs.
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When played from within a 360-playback video player such as the Movies & TV app on Windows 10, the resulting recorded video will offer the expected spherical view panning experience.įor previewing a 360 frame, an application does need to explicitly use the XAML MediaPlayerElement for preview.
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The metadata provided via the DMFT will be leveraged by the platform to record the videos in MP4 format and enclose implicitly the proper standardized metadata. These equirectangular frames can then be acquired and consumed by the apps via MediaCapture and MediaPlayer APIs to project a 360, spherical, panning video preview experience.
An IHV would typically be capturing synchronously with the two fisheye sensors, unwarp and stitch the frames inside the DMFT to then output equirectangular frames. Most 360 cameras come with 2 sensors back-to-back and cover a 360 FoV with some overlap. OverviewĪ 360 camera IHV can provide DMFT plugins (with or without custom UVC drivers) which will expose the spherical format of each stream and media type that emits spherical frames, as well as process the camera driver output and provide equirectangular frames with appropriate attribute and metadata.
MICROSOFT 360 DRIVER DOWNLOAD HOW TO
The Cam360 sample available on GitHub shows how to support preview, video record, and photo capture scenarios with a 360 camera on Windows.
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