How do I play black videos from my Canon camera on my smartphone?

Episode 999 (1:34:39)

Gary from Laguna Nigel, CA
Canon 1DX

Gary got a smartphone and he now has a lot of images and video clips. but he can't get the videos that he shot with his Canon 1Dx to play. Leo says it may be a playback codec. The videos are in a format that the phone can't play back. Leo says to look on Google Play. MX Player and VLC are recommended by the chatroom. Leo also says if he saves the videos at a lower bitrate, that may help as well.