Yes, unfortunately this is a known issue - seeking under Safari is not stable. The only workaround is to disable Viblast Player under Safari and use the built-in support for HLS. You can do that by not including the viblast.js resource. It may also be necessary to change the type property to "application/x-mpegURL".
We are working on fixing this problem but I cannot give you an ETA.
Great! Thanks for your reply. The problem was solved.
When I need to play videos on HTML5 video tag, I use just JWPlayer on Safari and use JWPlayer with Viblast Player integration on other browsers like Chrome and FireFox.
I'm using Viblast Player with JW Player according to this document. http://viblast.com/player/docs/jwplayer-integration Video (m3u8) stops when I change video play time moving a seek bar on player. After waiting some seconds, video start again. Are there any bugs of your JS library especially on Safari? It works on Chrome and Fire Fox(> 42).