This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
msStereo3DPackingMode is a read/write property which gets
or sets the frame-packing mode for stereo 3-D video content.
This proprietary property is specific to Internet Explorer and Microsoft Edge.
HTMLVideoElement.msStereo3DPackingMode(topbottom, sidebyside, none);
The following values return, or set, the stereo 3-D content packing as "topbottom", "sidebyside", or "none" for regular 2-D video.
none (0): Specifies regular 2-D video.
topbottom (1): Specifies stereo 3-D content packing and that the views are packed side-by-side in a single frame.
sidebyside (2): Specifies sidebyside stereo 3-D content packing and that the views are packed top-to-bottom in a single frame.