Hi. I'm a new user. I found this topic as this was my first issue on buying SkyBox for Quest 2 and trying it out. Very sad to see that "Full SBS Matching" remains un-fixed / still does not work. :(
I'm refering to 3D Blu-ray rips to Full SBS format to maximise visual quality. ie. 3840 x 1080 video (1920x1080 Left + Right).
As posted by others, my experience is:
Video initially plays as full 3840x1080 video with left & right images side by side. Each half is in the correct aspect ratio, making a screen wide, but half screen height image (ie. overall displayed image would be an aspect ratio of 32:9).
Selecting 3D SBS mode, renders a horizontally stretched 3D image (ie. left & right merged, but still rendered as the same half screen height 32:9 aspect ratio).
Going into Advanced and selecting the "Full SBS Matching" option corrects the horizontally stretched image (the content itself is now in the correct aspect ratio), but instead the top quarter and bottom quarter of the video are chopped off (ie. we are seeing a 32:9 letterboxed slot of the overall movie frame).
Going back into Advanced and overridding the Aspect Ratio to 16:9 appears to fix the issue, although I note "Full SBS Matching" is again de-selected (so presumably Full SBS rendering is no longer in effect).
With these new faster & higher resolution VR headsets, it would be nice to know that we can take full advantage of Full SBS source resolution and working with 1920x1080 per eye, and not scaling up from a crushed 960x1080 SBS render.
Of course, the ultimate end game solution would be support for 3D MVC source MKV files (to avoid needing to "Full SBS" convert them in the first place, and therefore retain the original source image quality).
If beta testing is needed for any improvements for handling these Full SBS (ie. 3840x1080) sources, I'm happy to test. :)