For local preview, we recommend to encode your 360° videos following the compression guidelines below to get the best experience possible using your mobile device. 

To encode your video you can use the Handbrake freeware with our Wonda VR preset available here. Then follow these steps (don't forget to verify an audio track is enable):

N.B: Your videos need to have a duration of 2 seconds or more to be correctly imported in the editor.