Drag video files out of Photos. Put them in a folder with “Left” and “Right” subfolders. CD to the directory and use this terminal command to make L & R files to edit.
for f in *.MOV; do spatial export -i "$f" --vcodec proRes422 -o "Left/${f%}" -o "Right/${f%}";done
Edit your video in DaVinci Resolve Studio (need the paid version)
Project settings – 1920 x 1080, 30fps
Create a “Left” and “Right” bin and drag the corresponding clips into each one.
Right-click the master bin and choose 3D stereo sync. Pick the left and right eye folder. Set the output folder to the master bin. You should end up with a bunch of clips with 3D labels on them.
There is a bug in DR. My clips get paired with the wrong clip unless I sync one clip at a time. Super annoying.
Now you can edit as usual.
When you are done color grading – use the 3D tab on the Color page to adjust the alignment and 3D depth.
Use the stereo alignment tools if you have vertical mismatch.
You can use the convergence setting to make things farther out or farther in.
Finally – export a left eye video and a right eye video.
Convert Left & Right videos to MV-HEVC
Run this terminal command on the L & R videos you exported from DaVinci Resolve:
spatial make -i LEFT.mov -i RIGHT.mov --bitrate 20M --cdist 19.24 --hfov 63.4 --hadjust 0.02 --primary right --projection rect -o VIDEO-spatial.mov
When finished, drag the video to the Photos app where you can access it in AVP.
