How can we make 2d compatible 3d on Twitch and You Tube?

Is there a way you can make OBS deal with 3D to preserve the full video and have Twitch and You Tube properly deal with it for 2D.

The easiest way I can think of is broadcast in 32 x 9 side by side proper ratio and have some tag like "#3DStream" to tell the Twitch and YouTube stream players deal with it properly like offering choice of left eye, right eye, side-by-side half, and Monochromized Anaglyph. Or leave it default for Google Cardboard.

Probably a single 32x9 stream is better than twin 16x9 streams because a single stream guarantees L/R synching the corresponding frames.

I think YouTube has a proper player of 3d which defaults to 2d on most players unless you specify "give me 3d options". I don't think Twitch has a proper 3d player that can default to 2d unless you choose 3d options.
 
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