video detect

We find parseTsk offen not run after some time,but sendTsk and serStateTsk run as normal ,so we cancel this two normal threads and only run parseTsk,but in some time it did not run again ,so we use threadWindow to find that parseTsk really end in some time.As normal ,we didnot think something error in little problem because we think in view of myself,but this error may be find quickly if in view of others.In the end ,we find there was really a "break" in unexpect place.