It may be your ISP disrupting .mp4 streams from suspect iptv services.
(Most have received Court Approval to do this).
Since i replied to your other inquiry re; EPG without m3u on DLt2, I know you are using MAC# authentication on your account.
It is possible that Infomir is causing your problem, as they also have been disrupting users of their protocol (Stalker).
* You should try removing the MAC#, on your account, and use Login with ID/PW.
This will change the control protocol, and possibly solve your problem.
* Alternately, you could make a VOD playlist (Local file), from a modified Template.
(See m3u thread).
/Shooty