It's a shame the lock screen only shows for 5 seconds and you can't change that. I have a very cool video that I play when the lock screen shows but it cuts is off after 5 seconds unless I touch the screen every 4.9 seconds. I swear there is no menu setting to alter that. I have looked for 4 days. Even a youtuber says you cannot change that lock out time period.
But it could be as simple as the phone doesn't like my video lol, that could be it.