seek_time: fix left offset (close #195)
seek_time: fix left offset (close #195)

jfairley/clappr,wxmfront/clappr,Pyrotoxin/clappr,flavioribeiro/clappr,burakkp/clappr,wxmfront/clappr,shakin/clappr,leandromoreira/clappr,Pyrotoxin/clappr,leandromoreira/clappr,MariadeAnton/clappr,shakin/clappr,flavioribeiro/clappr,Metrakit/clappr,kelonye/clappr,dayvson/clappr,irongomme/clappr,wxmfront/clappr,Peer5/clappr,MariadeAnton/clappr,burakkp/clappr,Peer5/clappr,Peer5/clappr,leandromoreira/clappr,jfairley/clappr,irongomme/clappr,tarkanlar/clappr,dayvson/clappr,tjenkinson/clappr,tjenkinson/clappr,Metrakit/clappr,kelonye/clappr,clappr/clappr,MariadeAnton/clappr,Pyrotoxin/clappr,Metrakit/clappr,clappr/clappr,clappr/clappr,irongomme/clappr,tarkanlar/clappr,jfairley/clappr,dayvson/clappr,kelonye/clappr,tjenkinson/clappr,shakin/clappr,flavioribeiro/clappr,tarkanlar/clappr,burakkp/clappr