adding/correcting media player so works on iphone/ipad/computer for video streaming user gerenerated website

I have an active website ([login to view URL]) that is a user generated video streaming site. Currently the upload feature is working for users but the JW media player does not always work on iphone/ipad. An error states: No playable sources found. Currently my web designer has enabled: upload mp4, m4v, f4v, mov, webm, flv, ogv, wmv videos). My number one priority is: 1) I want a media player to be able to play all these files on all devices (ipad/iphone/computer). You can change the media player if you feel this is required. If this is required please ensure the media player displays a loading bar with play/pause and maxamise view features (as the current jw player does) Additionally if there are no files uploaded to the specific region, is it possible to have a preloaded message thats states: No videos uploaded, please upload video. Example of region with no videos uploaded yet: [login to view URL] Thanks