You are likely going between locations and had a connection issue. If while you are trying to upload the video you leave a wifi connection or are driving and go between towers it can cause the "pending" issue. To fix this:

1.  First force close the app (if you don’t know how to do that restarting your phone will do the same thing).
2.  Use your phone to recapture the video. This should be done outside of the app just in case you have issues uploading again.
3.  Connect to wifi to upload your video in the Revelation mobile app. If wifi isn’t available then make sure to do it when you are planning on staying put.