https://youtu.be/t5g9N34TEsw
TL,DW, TL,DR: You must encode your video file as FULL-side-by-side then add the correct metadata to it as an MKV file using ffmpeg with the following command:
ffmpeg -i inputfile.mp4 -map 0 -c copy -aspect 1920:1080 -metadata:s:v stereo_mode=left_right outputfile.mkv
There are links to bat files and a copy of FFMPEG that will do this for you just drag and drop your full-sbs file or your Hsbs file and it will resize it and add the needed metadata (see the different bat files and their descriptions). I hope this helps anyone really wanting to post some nice 3D content, which is especially great to view on an HMD like the Oculus Go, or whatnot
