hmm.. well, maybe it's just the android browser then... but it's hard to believe that, that the browser would cause the .mp4 files not to work?! i took the .mp4 video down now because it wasn't a video that i really wanted to add to my blog.. i just uploaded it for you to see that it wasn't working...i will put it back up.. if you go to www.healthybodiesfitnessandnutrition.com/hbfn-blog and under categories pick "more fitness resources," it is the last article (article 3)... you will see that the first .wmv video works and the second .mp4 video doesn't.. again, i have responsive picked rather than classic and when i pick classic, the .mp4 will work... (youtube videos also work fine..)

The second video is not working because you have used an unsupported format. You can see the supported formats at support.jwplayer.com/customer/portal/articles/1403635-media-format-reference . Since you are using an MP4 file ensure that is encoded as required with the H.264 codec.

Oh okay, thank you. I will have to make sure that is is encoded with the H.264 codec. Again, thank you so much.

You are welcome.