I can see the file but it won't open. My LG Stylo 3 plus phone says "Cannot Play video, This file is not supported". I tried on my PC, but then it says I have to convert it. I have tried opening with Windows Movies and TV; Windows Power Media; photos. I have tried saving it on my phone's storage vs the SD Card, changing the name; changing the extension from .mp4 to .mov. So far nothing has worked. I am considering downloading the app "MP4Fix Video Repair Tool by smamolot. But am hesitant since there seems to be a fee to save the "saved" video. Any suggestions would be greatly appreciated. Thanks.