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Browser becomes unresponsive while loading large VTT files #4685

Open
4 tasks done
stephanterning opened this issue Feb 5, 2025 · 3 comments
Open
4 tasks done

Browser becomes unresponsive while loading large VTT files #4685

stephanterning opened this issue Feb 5, 2025 · 3 comments
Labels
Bug Pri-Medium
Milestone
5.1.0

Comments

@stephanterning
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Environment
Steps to reproduce
  1. Go to https://reference.dashif.org/dash.js/nightly/samples/dash-if-reference-player/
  2. Paste https://ed17.cdn.svt.se/d0/se/20250112/d188215b-fda7-487c-91aa-b71edea5f02d/dash-full.mpd
  3. Click 'Load'
Observed behavior

The browser tab becomes unresponsive, displaying a “Page is unresponsive” message after a few seconds. After approximately 15 seconds, the loading completes, and the video starts playing with subtitles functioning correctly.

Console output
[3211][MediaPlayer] Streaming Initialized 
Debug.js:169 [3215][MediaPlayer] Playback Initialized 
Debug.js:169 [3224][DashParser] Parsing complete: 2.70ms 
Debug.js:169 [3225][StreamController] Manifest updated... updating data system wide. 
Debug.js:169 [3226][ManifestUpdater] Manifest has been refreshed at Wed Feb 05 2025 15:53:42 GMT+0100 (Central European Standard Time)[1738767222.443]  
Debug.js:169 [3230][StreamController] Switch to stream 0. Seektime is 0, current playback time is null. Seamless period switch is set to false 
Debug.js:169 [3231][MediaSourceController] Created MediaSource 
Debug.js:169 [3232][MediaSourceController] Set MediaSource duration:26620.80078125 
Debug.js:169 [3242][Stream] No muxed data. 
Debug.js:169 [3242][Stream] No image data. 
Debug.js:169 [3249][StreamProcessor][video] OnFragmentLoadingCompleted for stream id 0 and media type video - Url: https://ed17.cdn.svt.se/d0/se/20250112/d188215b-fda7-487c-91aa-b71edea5f02d/cmaf-video-avc-416x234p50-331/cmaf-video-avc-416x234p50-331-init.mp4  
Debug.js:169 [3250][StreamProcessor][audio] OnFragmentLoadingCompleted for stream id 0 and media type audio - Url: https://ed17.cdn.svt.se/d0/se/20250112/d188215b-fda7-487c-91aa-b71edea5f02d/cmaf-audio-sv-lc-aac-2ch-125/cmaf-audio-sv-lc-aac-2ch-125-init.mp4  
Debug.js:169 [3251][StreamProcessor][video] [video] lastInitializedRepresentationId changed to 4 
Debug.js:169 [3251][StreamProcessor][audio] [audio] lastInitializedRepresentationId changed to 5 
Debug.js:169 [3259][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3262][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3263][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
2Debug.js:169 [3266][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3269][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
2Debug.js:169 [3271][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
2Debug.js:169 [3272][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3274][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
2Debug.js:169 [3276][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3277][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3280][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
3Debug.js:169 [3282][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3284][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3285][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3286][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3288][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
2Debug.js:169 [3289][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3290][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3293][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3294][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
2Debug.js:169 [3295][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
3Debug.js:169 [3296][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
2Debug.js:169 [3301][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3302][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
2Debug.js:169 [3304][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3305][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3309][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
Debug.js:169 [3310][VTTParser] Skipping cue due to empty/malformed cue text 
doLog @ Debug.js:169
error @ Debug.js:128
parse @ VTTParser.js:90
_appendText @ TextSourceBuffer.js:415
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this errorAI
TextTracks.js:659 The provided value 'middle' is not a valid enum value of type AlignSetting.
_handleNonHtmlCaption @ TextTracks.js:659
addCaptions @ TextTracks.js:512
_appendText @ TextSourceBuffer.js:416
append @ TextSourceBuffer.js:279
_appendNextInQueue @ SourceBufferSink.js:380
_executeCallback @ SourceBufferSink.js:430
_waitForUpdateEnd @ SourceBufferSink.js:462
(anonymous) @ SourceBufferSink.js:284
append @ SourceBufferSink.js:275
_onInitFragmentLoaded @ NotFragmentedTextBufferController.js:166
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onFragmentLoadingCompleted @ FragmentController.js:153
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
onLoadingCompleted @ FragmentModel.js:290
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
report @ FragmentLoader.js:88
success @ FragmentLoader.js:117
(anonymous) @ HTTPLoader.js:275
Promise.then
_onRequestEnd @ HTTPLoader.js:255
_onloadend @ HTTPLoader.js:153
XMLHttpRequest.send
load @ XHRLoader.js:82
(anonymous) @ HTTPLoader.js:324
Promise.then
(anonymous) @ HTTPLoader.js:315
_loadRequest @ HTTPLoader.js:314
_internalLoad @ HTTPLoader.js:426
load @ HTTPLoader.js:132
load @ URLLoader.js:66
load @ FragmentLoader.js:97
loadCurrentFragment @ FragmentModel.js:219
executeRequest @ FragmentModel.js:207
_onInitFragmentNeeded @ StreamProcessor.js:413
(anonymous) @ EventBus.js:145
trigger @ EventBus.js:144
_getNextFragment @ ScheduleController.js:166
schedule @ ScheduleController.js:140
setTimeout
startScheduleTimer @ ScheduleController.js:111
startScheduleControllers @ Stream.js:935
(anonymous) @ StreamController.js:534
Promise.then
_activateStream @ StreamController.js:525
_onMediaSourceOpen @ StreamController.js:493Understand this warningAI
Debug.js:169 [25212][StreamProcessor][text] OnFragmentLoadingCompleted for stream id 0 and media type text - Url: https://ed17.cdn.svt.se/d0/se/20250112/d188215b-fda7-487c-91aa-b71edea5f02d/text/text-0.vtt  
Debug.js:169 [25216][PlaybackController] Native video element event: play 
Debug.js:169 [25216][PlaybackController] Native video element event: waiting 
Debug.js:169 [25218][PlaybackController] Native video element event: loadedmetadata 
Debug.js:169 [25223][StreamProcessor][video] OnFragmentLoadingCompleted for stream id 0 and media type video - Url: https://ed17.cdn.svt.se/d0/se/20250112/d188215b-fda7-487c-91aa-b71edea5f02d/cmaf-video-avc-416x234p50-331/cmaf-video-avc-416x234p50-331-1.mp4  
Debug.js:169 [25224][StreamProcessor][audio] OnFragmentLoadingCompleted for stream id 0 and media type audio - Url: https://ed17.cdn.svt.se/d0/se/20250112/d188215b-fda7-487c-91aa-b71edea5f02d/cmaf-audio-sv-lc-aac-2ch-125/cmaf-audio-sv-lc-aac-2ch-125-1.mp4  
Debug.js:169 [25227][StreamProcessor][video] OnFragmentLoadingCompleted for stream id 0 and media type video - Url: https://ed17.cdn.svt.se/d0/se/20250112/d188215b-fda7-487c-91aa-b71edea5f02d/cmaf-video-avc-416x234p50-331/cmaf-video-avc-416x234p50-331-2.mp4  
Debug.js:169 [25238][PlaybackController] Native video element event: loadeddata 
Debug.js:169 [25238][PlaybackController] Native video element event: playing
Expected behavior

Not freezing during loading

dash-full.mpd.txt

text-0.vtt.txt

Image
@dsilhavy
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dsilhavy commented Feb 5, 2025

I don't have a Swedish VPN at hand. Might be related to the size of the VTT file, 2.5MB. Can you please check behavior in dash.js 4.7.4: https://reference.dashif.org/dash.js/latest/samples/dash-if-reference-player/index.html. Do you observe the same issue?

@stephanterning
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Yes, same issue in 4.7.4. Most probably the large VTT file that is not handled by dash.js in a good way, yes. The video is over 7 hours long, hence the amount of subtitles.

@dsilhavy dsilhavy added this to the 5.1.0 milestone Feb 5, 2025
@stephanterning
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Tested the same manifest in two other MSE players, and neither showed any signs of performance issues when parsing and displaying the subtitles.

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Bug Pri-Medium
Projects
dash.js Version 5.1.0
Status: No status
Milestone
5.1.0
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@stephanterning @dsilhavy