Appendix: Example manifest (conceptual)
ffmpeg -framerate 30 -i left_frames/l_%04d.png -i right_frames/r_%04d.png -filter_complex "[0]scale=960:1080[l];[1]scale=960:1080[r];[l][r]hstack" output_sbs.mp4 zipling 3d video
To know if Zipling is right for you, it helps to see how it stacks up against similar formats. zipling 3d video