VIDEOJS: ERROR: TypeError: Cannot read properties of undefined (reading 'parts' | 'videoTimingInfo' | 'audioTimingInfo' | 'start' | 'end')

[Aigor79]

Description

When I play a HLS video, within a corporate network, sometimes the player stops with these errors:

TypeError: Cannot read properties of undefined (reading 'parts')
..
Uncaught TypeError: Cannot read properties of undefined (reading 'videoTimimngInfo')
..
Uncaught TypeError: Cannot read properties of undefined (reading 'start')
..
Uncaught TypeError: Cannot read properties of undefined (reading 'audioTimingInfo')
..
Uncaught TypeError: Cannot read properties of undefined (reading 'end')
...
TypeError: Cannot read properties of undefined (reading 'dateTimeObject')
...
TypeError: Cannot read properties of undefined (reading 'uri')

These errors are not handled by the player.on('error') event

Steps to reproduce

It's difficult to reproduce, however I suppose it's enough to force to undefined some attributes of the object segmentinfo inside generateSegments.

Results

Expected

When a segment arrives with wrong information the player should ignore it and continue viewing the video. In my case it was enough to catch errors in some functions:

• updateMediaSecondsLoaded_
• updateMediaSecondsLoaded_
• handleSegmentTimingInfo_
• calculateSegmentTimeMapping_
• saveSegmentTimingInfo
• segmentInfoString
• addSegmentMetadataCue_
• handleAppendsDone_

I simply added within functions

try {
     ....
 } catch (e) {
      videojs.log.warn(e);
}

and the player has never stopped

Actual

When a wrong segment comes the player blocks the view and you have to restart it

Error output

(line number does not match because of try catches added, however it is version 7.18.1 of videojs)

TypeError: Cannot read properties of undefined (reading 'start')
    at SyncController.calculateSegmentTimeMapping_ (video.min.js:60623:30)
    at SyncController.saveSegmentTimingInfo (video.min.js:60526:59)
    at SegmentLoader.handleAppendsDone_ (video.min.js:58397:42)
    at SegmentLoader.checkAppendsDone_ (video.min.js:58269:22)
    at Object.action (video.min.js:58775:17)
    at shiftQueue (video.min.js:58693:20)
    at SourceBuffer.<anonymous> (video.min.js:58912:13)

TypeError: Cannot read properties of undefined (reading 'dateTimeObject')
    at SyncController.saveSegmentTimingInfo (video.min.js:60541:40)
    at SegmentLoader.handleAppendsDone_ (video.min.js:58397:42)
    at SegmentLoader.checkAppendsDone_ (video.min.js:58269:22)
    at Object.action (video.min.js:58775:17)
    at shiftQueue (video.min.js:58693:20)
    at SourceBuffer.<anonymous> (video.min.js:58912:13)

TypeError: Cannot read properties of undefined (reading 'uri')
    at segmentInfoString (video.min.js:55579:44)
    at SegmentLoader.handleAppendsDone_ (video.min.js:58429:44)
    at SegmentLoader.checkAppendsDone_ (video.min.js:58269:22)
    at Object.action (video.min.js:58775:17)
    at shiftQueue (video.min.js:58693:20)
    at SourceBuffer.<anonymous> (video.min.js:58912:13)

TypeError: Cannot read properties of undefined (reading 'end')
    at SegmentLoader.handleAppendsDone_ (video.min.js:58459:47)
    at SegmentLoader.checkAppendsDone_ (video.min.js:58269:22)
    at Object.action (video.min.js:58775:17)
    at shiftQueue (video.min.js:58693:20)
    at SourceBuffer.<anonymous> (video.min.js:58912:13)

Additional Information

versions

videojs

7.18.1

browsers

Edge Chrome Firefox

OSes

Windows MacOs

plugins

no

[welcome[bot]]

👋 Thanks for opening your first issue here! 👋

If you're reporting a 🐞 bug, please make sure you include steps to reproduce it. We get a lot of issues on this repo, so please be patient and we will get back to you as soon as we can. To help make it easier for us to investigate your issue, please follow the contributing guidelines.

[misteroneill]

Thanks for the detailed report!

The team is currently operating at lower capacity, so it may be a while before we get to this one. It seems like something we should investigate, though.

[tzarebczan]

We're also seeing this when switching betweeen quality settings using http-streaming.

Refreshing fixes it, and able to switch normally.

[tzarebczan]

Is this potentially fixed here for http-streaming? https://github.com/videojs/http-streaming/releases/tag/v2.14.2

Possible to get a release with that bump?

[gkatsev]

Video.js 7.19.2 just released with that VHS version. Please try it out.

[welcome[bot]]

👋 Thanks for opening your first issue here! 👋

If you're reporting a 🐞 bug, please make sure you include steps to reproduce it. We get a lot of issues on this repo, so please be patient and we will get back to you as soon as we can. To help make it easier for us to investigate your issue, please follow the contributing guidelines.

[tzarebczan]

Great, i actually overwrote it on our site, launched earlier today. Haven't seen it creep up yet, thank you!

[Aigor79]

Unfortunately, the problem still exists using Video.js 7.19.2

video.min.js?version=7.19.2:12 VIDEOJS: ERROR: TypeError: Cannot read properties of undefined (reading 'parts')
    at e.t.playlist (video.min.js?version=7.19.2:21:219529)
    at e.t.handleUpdatedMediaPlaylist (video.min.js?version=7.19.2:25:14605)
    at e.<anonymous> (video.min.js?version=7.19.2:25:13193)
    at e.Be.o.dispatcher.o.dispatcher (video.min.js?version=7.19.2:12:13641)
    at je (video.min.js?version=7.19.2:12:14425)
    at e.ze.dispatchEvent.ze.trigger (video.min.js?version=7.19.2:12:16260)
    at e.t.haveMetadata (video.min.js?version=7.19.2:21:116508)
    at video.min.js?version=7.19.2:21:114053
    at gu (video.min.js?version=7.19.2:21:84131)
    at Object.callback (video.min.js?version=7.19.2:21:84496)

video.min.js?version=7.19.2:21 Uncaught TypeError: Cannot read properties of undefined (reading 'videoTimingInfo')
    at e.t.handleSegmentTimingInfo_ (video.min.js?version=7.19.2:21:236971)
    at onVideoSegmentTimingInfo (video.min.js?version=7.19.2:21:96772)
    at Worker.Du.n.onmessage (video.min.js?version=7.19.2:21:91898)

Uncaught TypeError: Cannot read properties of undefined (reading 'start')
    at e.t.updateMediaSecondsLoaded_ (video.min.js?version=7.19.2:21:242034)
    at e.t.handleData_ (video.min.js?version=7.19.2:21:232747)
    at onData (video.min.js?version=7.19.2:21:96428)
    at video.min.js?version=7.19.2:21:91618
    at Worker.Du.n.onmessage (video.min.js?version=7.19.2:21:91623)

video.min.js?version=7.19.2:21 Uncaught TypeError: Cannot read properties of undefined (reading 'audioTimingInfo')
    at e.t.handleSegmentTimingInfo_ (video.min.js?version=7.19.2:21:236971)
    at onAudioSegmentTimingInfo (video.min.js?version=7.19.2:21:96815)
    at Worker.Du.n.onmessage (video.min.js?version=7.19.2:21:91973)

video.min.js?version=7.19.2:21 Uncaught TypeError: Cannot read properties of undefined (reading 'start')
    at e.t.updateMediaSecondsLoaded_ (video.min.js?version=7.19.2:21:242034)
    at e.t.handleData_ (video.min.js?version=7.19.2:21:232747)
    at onData (video.min.js?version=7.19.2:21:96428)
    at video.min.js?version=7.19.2:21:91618
    at Worker.Du.n.onmessage (video.min.js?version=7.19.2:21:91623)

Uncaught TypeError: Cannot read properties of undefined (reading 'start')
    at e.t.calculateSegmentTimeMapping_ (video.min.js?version=7.19.2:21:272748)
    at e.t.saveSegmentTimingInfo (video.min.js?version=7.19.2:21:271711)
    at e.t.handleAppendsDone_ (video.min.js?version=7.19.2:21:245973)
    at e.t.checkAppendsDone_ (video.min.js?version=7.19.2:21:243683)
    at e.t.waitForAppendsToComplete_ (video.min.js?version=7.19.2:21:243338)
    at e.t.segmentRequestFinished_ (video.min.js?version=7.19.2:21:241836)
    at onDone (video.min.js?version=7.19.2:21:97017)
    at Worker.Du.n.onmessage (video.min.js?version=7.19.2:21:92336)

[gesinger]

We haven't been able to reproduce the issue yet ourselves. Does anyone have a reproducible test case that demonstrates the issue, or a segment that specifically triggers the errors? Thank you.

[Aigor79]

I think the problem occurs when network performance degrades. I often have experience of this problem while playing within a large private network (spread across the nation, in my case): video fragments sometimes get deteriorated and this causes error

[IndexLibrary]

Uncaught TypeError: Cannot read properties of undefined (reading 'parts') at SegmentLoader.chooseNextRequest_ (video.es.js:41474:1) at SegmentLoader.fillBuffer_ (video.es.js:41419:1) at SegmentLoader.monitorBufferTick_ (video.es.js:41391:1)

When the live stop and restart, the error occurs.The version is 8.3.0

[duongthaison98]

I have the same problems. It stopped streaming when this happened