It works with flash on desktop, but when flash is disabled: Non e'stato trovato un formato valido da ripodurre is the error. This error also comes up when the mobile device checks "Request Desktop Site"

It is in mp4 format: but the player type is HTML5 flash. content="http://flv.kataweb.it/repubblicatv/file/2014/08/01/203834/203834-video-rrtv-grasso_insultiblobflavia.mp4"

This is weird.

Can you add your device information to this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1047567

Hi, device is a Samsung Galaxy S3, I9300.

download flash player from this link and install it.. [don't post non-Adobe links for Flash we don't know if they are safe ed.]

Flash can be found at http://helpx.adobe.com/flash-player/kb/archived-flash-player-versions.html#main_Archived_versions

Hacked versions of Flash may contain malicious changes.

Thanks. Well, I would rather not install Flash... thanks for your help however. Cheers.