Add support for Side By Side/ Spatial Videos that are not spherical.

[blaineam]

Description

So this works great for any spherical video I through at it but If I just want a projection type for a standard Side By Side video that does not need fish eye distortion correction, I cannot use this.

If you added support for basic Side By Side 3D Stereoscopic videos I could use this in applications to say view a spacial video from my phone in browser.

Steps to reproduce

Explain in detail the exact steps necessary to reproduce the issue.

1. load a non Spherical SBS 3D video into the player
2. None of the possible projection modes handle playing the video without major distortion.

Results

Expected

Add a projection mode named SBS that simply handles videos with the left and right eye being the left and right side of a video file. Ultimately it would just play a single side of the video file I would suspect.

Actual

It just plays both sides separately or it distorts the image greatly.

Error output

No errors.