Faced the sync error with client and sever on DASH Reference player for both ull and non-ull channels

[ramajadevi]

Environment

DASH Reference player:
http://reference.dashif.org/dash.js/nightly/samples/dash-if-reference-player/index.html

• [] The MPD passes the DASH-IF Conformance Tool on https://conformance.dashif.org/
  yes passed
• [] The stream has correct Access-Control-Allow-Origin headers (CORS)
  Yes
• [] There are no network errors such as 404s in the browser console when trying to play the stream
  No error
• [] The issue observed is not mentioned on https://github.com/Dash-Industry-Forum/dash.js/wiki/FAQ
  Not yet mentioned
• [] The issue occurs in the latest reference client on http://reference.dashif.org/dash.js/ and not just on my page
  Latest one.

• Link to playable MPD file:
  http://hout-pl4b5-c20.docroot.chn5au1.eng.velocix.com/ULL3/vxfmt=dp/Manifest.mpd?device_profile=ull_enabled_2

http://hout-pl4b5-c20.docroot.chn5au1.eng.velocix.com/LL1/vxfmt=dp/Manifest.mpd?device_profile=ll_enabled_2

• Dash.js version:
  Reference Client 5.0.0
• Browser name/version:
  Firefox Browsers(124.0.1)(64-bit)
• OS name/version:
  Intel(R) Core(TM) i7-7600U CPU @ 2.80GHz 2.90 GHz

Steps to reproduce

1. Please provide clear steps to reproduce your problem
   Run the clear channel on 3 to 4 tab
   and watch the playback for max 2hr and min 1hr
2. If the bug is intermittent, give a rough frequency if possible
   max 2hr and min 1hr

Observed behavior

Put the attached popup like
Failed to synchronization clinet and server time

Expected behavior

1hr it is played OK and after that why this popup was shown
From our application level we have give the akami url to player and received the time from akami url to player as well.
Then why this popup will shown...

We expect the playback need to be continue without any error.

[ramajadevi]

Hi Team,
Kindly look into this bug and provide your feedback.
Thanks.

[dsilhavy]

You will need to debug this yourself, it simply looks like the time server was not available for a moment.

• Your linked MPD is not available, might be geo restricted
• How often did you reproduce this problem. Did it happen on multiple occasions?
• Try setting a breakpoint here to check the code flow and what might went wrong:

  dash.js/src/streaming/controllers/TimeSyncController.js

  Line 548 in ff66d15

  if (failed) {

[ramajadevi]

Hi Ddsilhavy,
Kindly find the attached MPD for your reference
ULL95_MPD.zip

Issue is produced often watch thee playback for max 2hr and min 1hr duration

The player is encountering difficulty in requesting the Akamai URL to fetch UTC time. We need to investigate why the player is unable to retrieve the time.

[ramajadevi]

Hi team,
Any further update from your side?
Thanks