360° Panorama image or movie to be successfully played on Youtube or Facebook

[Higuchi]

I'm struggling to make 360° Panorama image or movie to be successfully played on Youtube or Facebook. Below is my work flow.

In case of 360° Panorama movie for stereo eyes
1. Make stereo type panorama .jpg data first of all
2. Import the data on Photoshop as a sphere 3D specification
3. Modify it as a short movie to upload on Youtube
4. Export .mp4 data, and embed 360° meta data by using "Spatial Media Metadata Injector" by Google
5. Upload published .mp4 data on Youtube or Facebook

Unfortunately, the movie looks 180°, not 360°. Possibly, exported .mp4 from Photoshop has already 180°, before transfer to Spatial Media Metadata Injector. Is there any errors on my work flow? I've referred the explanation below.
https://www.youtube.com/watch?v=UVpD5QZE744

Thank you always,