Q: Two You Tube Videos won't play

I hope you guys can help me.   I have about 20 videos on my You Tube channel.   Two of them won't play with Safari.  They work fine with Google Chrome ..    These are videos I have edited in iMove and shared to You Tube.  I retried and uploaded one directly from You Tube .   All the other videos in  my channel work fine including others I have edited in iMovie.     Any ideas ??

BTW I re-installed Flash Player Thanks for helping me.   Best Wishes, Always    Garvin Bazzell, “Bazz”