I shared a 17 minute (1.11 GB) .mp4 file. It was reported to me that the video stops after 15 minutes with the note that it must be downloaded by the recipient to see the whole thing. Does the recipient have to do this to view the entire file. I also plan at some point to put up a larger (47 minute) file so the problem may be worse? Please advise how best to proceed. Thank you..