So maybe the source that is emailing you these videos is sending you some non-standard stuff.Ģ. Or it could be a standard video format that uses weird settings - like an odd bitrate or something. It could be a standard h264-compressed video. Inside could be a lot of different things. Maybe the mp4 file contains something unusual. If that doesn’t work, perhaps one of two things is happening:ġ. Just tap on it right there in the Mail app and it should play. You shouldn’t need anything special to view most MP4 files.
