AVPlayer seekToTime:toleranceBefore:toleranceAfter hangs Intermittently -

i calling avplayer seektotime:tolerancebefore:toleranceafter hangs intermittently, doesn't complete (completion block not called). looked @ other stackoverflow no success.

[avplayer seektotime:cmtimemakewithseconds (19,1) tolerancebefore:kcmtimezero toleranceafter:kcmtimezero completionhandler:^(bool finished) {}]; 

has come across issue?

try -seektodate:completionhandler: method . it's same tolerancebefore:toleranceafter kcmtimezero. if doesn't provide more details.