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Paused video keeps writing log lines about buffer pruning

Created by: wilaw

When a stream is paused , interval for buffer pruning keeps writing log lines.

Steps to repro:

  1. Use reference client
  2. Play http://rdmedia.bbc.co.uk/dash/ondemand/testcard/1/client_manifest-events.mpd for 10s.
  3. Pause
  4. Wait 2 minutes
  5. View console logs.

Example output:

Debug.js:108 [93900] SegmentTemplate: 68 / 3600 2016-05-20 10:45:59.802 Debug.js:108 [94300] Buffered Range: 0 - 70.015999 2016-05-20 10:45:59.803 Debug.js:108 [94301] Prior to making a request for time, NextFragmentRequestRule is aligning index handler's currentTime with bufferedRange.end. 70 was changed to 70.015999 2016-05-20 10:45:59.804 Debug.js:108 [94302] Getting the request for audio time : 70.015999 2016-05-20 10:45:59.804 Debug.js:108 [94302] Index for audio time 70.015999 is 34 2016-05-20 10:45:59.804 Debug.js:108 [94302] SegmentTemplate: 68 / 3600 2016-05-20 10:45:59.805 Debug.js:108 [94303] Getting the next request at index: 35 2016-05-20 10:45:59.805 Debug.js:108 [94303] SegmentTemplate: 70 / 3600 2016-05-20 10:46:00.187 Debug.js:108 [94685] Buffered Range: 0 - 71.999999 2016-05-20 10:46:15.658 Debug.js:108 [110156] try to prune buffer 2016-05-20 10:46:45.662 Debug.js:108 [140160] try to prune buffer 2016-05-20 10:47:15.663 Debug.js:108 [170161] try to prune buffer 2016-05-20 10:47:45.662 Debug.js:108 [200160] try to prune buffer 2016-05-20 10:48:15.663 Debug.js:108 [230161] try to prune buffer 2016-05-20 10:48:45.665 Debug.js:108 [260163] try to prune buffer 2016-05-20 10:49:15.665 Debug.js:108 [290163] try to prune buffer 2016-05-20 10:49:45.669 Debug.js:108 [320167] try to prune buffer 2016-05-20 10:50:15.671 Debug.js:108 [350169] try to prune buffer 2016-05-20 10:50:45.671 Debug.js:108 [380169] try to prune buffer 2016-05-20 10:51:15.674 Debug.js:108 [410172] try to prune buffer 2016-05-20 10:51:45.672 Debug.js:108 [440170] try to prune buffer 2016-05-20 10:53:11.177 Debug.js:108 [525675] try to prune buffer 2016-05-20 10:53:41.179 Debug.js:108 [555677] try to prune buffer 2016-05-20 10:54:11.178 Debug.js:108 [585676] try to prune buffer 2016-05-20 10:54:41.183 Debug.js:108 [615681] try to prune buffer 2016-05-20 10:55:11.184 Debug.js:108 [645682] try to prune buffer 2016-05-20 10:55:41.184 Debug.js:108 [675682] try to prune buffer 2016-05-20 10:56:11.186 Debug.js:108 [705684] try to prune buffer

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