Periodic crashes are occurring in areas where a frequent number of dispatches to the Default QOS queue are occuring. A search about this identifier generally says that there are too many items submitted to this queue and that iOS will not run the method, and that it can lead to a crash. In this particular case the crash comes from a method in the dispatch, "... unrecognized selector sent to instance ..."That crash reason is fairly consistent, but random in where it occurs and when. Can someone provide a definitive definition and possible consequences of the overcommit, and suggestions beyond looking for Zombies to isolate hwo the overcommmit is occurring and what that may be breaking?

During the course of stream a live HTTP Video Stream intermittently these errors show up in the logs for AVPlayer. What problem are they indicating for AVPlayer and what conditioning of the media stream is needed to resolve these errors?2015/06/16 01:16:35.035 http://127.0.0.1:49815/f1434502503.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 127.0.0.1 -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.3884s)" lan2015/06/16 01:17:14.014 http://127.0.0.1:49815/f1434502617.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 127.0.0.1 -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.9554s)" lan2015/06/16 02:01:23.023 http://127.0.0.1:49815/f1434510588.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 127.0.0.1 -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.1115s)" lan2015/06/16 02:01:31.031 http://127.0.0.1:49815/f1434510612.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 - -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.4285s)" lan2015/06/16 02:47:36.036 http://127.0.0.1:49815/f1434518949.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 127.0.0.1 -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.5811s)" lan2015/06/16 02:55:34.034 http://127.0.0.1:49815/f1434520383.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 127.0.0.1 -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.7908s)" lan2015/06/16 03:10:49.049 http://127.0.0.1:49815/f1434523140.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 127.0.0.1 -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.7415s)" lan2015/06/16 03:41:46.046 http://127.0.0.1:49815/f1434528732.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 127.0.0.1 -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.5722s)" lan2015/06/16 07:13:08.008 http://127.0.0.1:49815/f1434566955.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 127.0.0.1 -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.2835s)" lan2015/06/16 07:13:10.010 http://127.0.0.1:49815/f1434566964.ts 6376DBAA-A074-4F6A-B240-5CD1A838CE88 127.0.0.1 -12645 "CoreMediaErrorDomain" "Internal error: restarting too far ahead (-1.1441s)" lan2