Conformance tool warning: no duration, but SegmentTimeline exists

[alex-rsk]

Hello, we are making manifest with Mp4Box, and it, generally, works in current player version, but sometimes it stalls.

I'm trying to find out where's the problem.
I use conformance tool for manifest, and it shows 2 errors

[MPDError #1 If more than one Media Segment is present the duration attribute or SegmentTimeline element shall be present.](https://conformance.dashif.org/Conformance-Frontend/index.html#)

[MPDError #1 If more than one Media Segment is present the duration attribute or SegmentTimeline element shall be present.](https://conformance.dashif.org/Conformance-Frontend/index.html#)

I'm stuck, because in our manifest there are SegmentTimeline elements.
Please appoint what I'm doing wrong

<?xml version="1.0"?>
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" minBufferTime="PT1.500S" type="dynamic" availabilityStartTime="2024-09-05T13:19:58.972Z" publishTime="2024-09-05T13:20:19.894Z" minimumUpdatePeriod="PT0H0M2.000S" timeShiftBufferDepth="PT0H1M0.000S" maxSegmentDuration="PT0H0M3.000S" profiles="urn:mpeg:dash:profile:full:2011">
 <ProgramInformation moreInformationURL="https://luuv.com">
  <Title>Mystream</Title>
 </ProgramInformation>

 <Period id="DID1" start="PT0H0M0.000S">
  <AdaptationSet maxWidth="1920" maxHeight="1080" maxFrameRate="25" par="16:9" startWithSAP="1">
   <SegmentTemplate timescale="12800" presentationTimeOffset="1621"/>
   <Representation id="norm_quality" mimeType="video/mp4" codecs="avc1.640028" width="1920" height="1080" frameRate="25" sar="1:1" bandwidth="1795232">
    <SegmentTemplate media="p9eRr28RWY_dash_track1_$Time$_rep1.m4s" initialization="p9eRr28RWY_dash_track1_init_rep1.mp4" timescale="12800" presentationTimeOffset="1536" startNumber="1">
     <SegmentTimeline>
      <S t="1621" d="25600" r="4"/>
      <S t="128000" d="25600" r="9"/>
     </SegmentTimeline>
    </SegmentTemplate>
   </Representation>
   <Representation id="bad_quality" mimeType="video/mp4" codecs="avc1.640015" width="360" height="360" frameRate="25" sar="16:9" bandwidth="100000">
    <SegmentTemplate media="p9eRr28RWY_dash_track1_$Time$_rep2.m4s" initialization="p9eRr28RWY_dash_track1_init_rep2.mp4" timescale="12800" presentationTimeOffset="1536" startNumber="1">
     <SegmentTimeline>
      <S t="1621" d="25600" r="4"/>
      <S t="128000" d="25600"/>
      <S t="164864" d="25600" r="2"/>
      <S d="12800"/>
      <S d="38400"/>
      <S d="25600" r="2"/>
      <S d="12800"/>
     </SegmentTimeline>
    </SegmentTemplate>
   </Representation>
  </AdaptationSet>
 </Period>
 <UTCTiming schemeIdUri="urn:mpeg:dash:utc:http-iso:2014" value="https://time.akamai.com/?iso&amp;ms"/>
</MPD>