DASH - UTCTiming - No time request

[enricovittorini]

Have you read the FAQ and checked for duplicate open issues?
YES

If the problem is related to FairPlay, have you read the tutorial?

NO

What version of Shaka Player are you using?
v4.16.13 (uncompiled) from https://shaka-player-demo.appspot.com/demo/#build=uncompiled

Can you reproduce the issue with our latest release version?
YES

Can you reproduce the issue with the latest code from main?
No tried

Are you using the demo app or your own custom app?
demo app

If custom app, can you reproduce the issue using our demo app?
using demo app

What browser and OS are you using?
Chrome 143.0.7499.170 (Official Build) (64-bit)

For embedded devices (smart TVs, etc.), what model and firmware version are you using?

What are the manifest and license server URIs?

What configuration are you using? What is the output of player.getNonDefaultConfiguration()?

What did you do?
Play two different manifest:

TEST A

<?xml version="1.0" encoding="UTF-8"?>
<MPD profiles="urn:mpeg:dash:profile:isoff-live:2011" type="dynamic" id="master.mpd" availabilityStartTime="2026-01-01T16:56:40Z" minimumUpdatePeriod="PT2.0S" minBufferTime="PT1.0S" publishTime="2026-01-01T16:59:45Z" timeShiftBufferDepth="PT10M" suggestedPresentationDelay="PT3.2S" xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:scte35="urn:scte:scte35:2014:xml+bin" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd">
...
....
...
<UTCTiming schemeIdUri="urn:mpeg:dash:utc:http-xsdate:2014" value="https://time.akamai.com/?iso&amp;ms"></UTCTiming>

TEST B

<?xml version="1.0" encoding="UTF-8"?>
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd" profiles="urn:mpeg:dash:profile:isoff-live:2011,http://dashif.org/guidelines/dash-if-simple" type="dynamic" availabilityStartTime="1970-01-01T00:00:00Z" publishTime="1970-01-01T00:00:00Z" minimumUpdatePeriod="PT2S" minBufferTime="PT2S" timeShiftBufferDepth="PT1M" maxSegmentDuration="PT2S">
  <ProgramInformation moreInformationURL="https://github.com/dash-Industry-Forum/livesim-content">
<UTCTiming schemeIdUri="urn:mpeg:dash:utc:http-iso:2014" value="https://time.akamai.com/?iso&amp;ms"></UTCTiming>
....
...
<UTCTiming schemeIdUri="urn:mpeg:dash:utc:http-xsdate:2014" value="https://time.akamai.com/?iso&amp;ms"></UTCTiming>

with TEST-A I do not see in the Chrome dev console - Network - a reuqest for time sync to https://time.akamai.com/?iso&ms
with TEST-B there is request to https://time.akamai.com/?iso&ms

What did you expect to happen?
in TEST-A a request to https://time.akamai.com/?iso&ms

What actually happened?
no request to https://time.akamai.com/?iso&ms in Chrome Network for TEST-A

Are you planning to send a PR to fix it?
NO

[avelad]

**What are the manifest and license server URIs?**
<!-- NOTE:
  You can send the URIs to <shaka-player-maintainers@googlegroups.com> instead,
  but please use GitHub and the template for the rest.
  A copy of the manifest text or an attached manifest will **not** be
  enough to reproduce your issue, and we **will** ask you to send a
  URI instead.  You can copy the URI of the demo app to send us the
  exact asset, licence server, and settings you have selected there.
  Avoid geo-blocked content if at all possible, as the contributors who diagnose
  Shaka Player issues may not be able to access it.
  If you send the URIs to email, the response time and resolution
  will be much higher.
-->

[enricovittorini]

@avelad URI sent via mail. thanks!

[avelad]

@joeyparrish can you review it? Thanks!