local files don't play using VRTV or Skybox Pixel 2 XL

[life_speed@yahoo.com]

I have a few local MP4 files that are for Gear VR. I installed both Skybox and VRTV. These apps do show up in Daydream and I am able to browse to the files in entering either app from Daydream. But when I click on the files both Skybox and VRTV exit and return to the Daydream menu.

Are these files not playable? For some reason I thought Gear VR MP4s could be played on Daydream. Are any of the common VR formats compatible with Daydream?