ISO/IEC INTERNATIONAL STANDARD 23009-2 Third edition 2020-09 Information technology Dynamic adaptive streaming over HTTP (DASH) - Part 2: Conformance and reference software Technologies de I'information-Diffusion en flux adaptatif dynamique surHTTP (DASH)- Partie 2: Conformite et logiciel de référence Reference number IEC IS0/IEC 23009-2:2020(E) @IS0/IEC2020 IS0/IEC23009-2:2020(E) COPYRIGHTPROTECTEDDOCUMENT IS0/IEC2020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting below or Iso's member body in the country of the requester. ISO copyright office CP 40i:Ch.de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22.749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0/IEC 2020 - All rights reserved IS0/IEC23009-2:2020(E) Contents Page Foreword ..V Introduction. ..vi 1 Scope. 2 Normative references 3 Terms, definitions, symbols and abbreviatedterms 4 Media presentation conformance. 4.1 Overview .1 4.2 Software tools ..2 5 MPD conformance .2 5.1 General .2 5.2 StaticMPDconformance 5.3 DynamicMPDconformance 4 5.3.1 General. 5.3.2 Background andrequirements. 4 5.3.3 Dynamicconformance softwaredesign ..6 5.4 Conformance checks for spatial relationship description .7 .8 6 Segment conformance 6.1 Overview .8 6.2 Representation conformance. .9 6.2.1 Iso basemedia fileformat .9 MPEG-2transportstream .10 6.2.2 6.3 Adaptation set conformance.. ..13 6.3.1 Iso basemediafileformat ..13 6.3.2 MPEG-2transportstream ..14 6.4 Dynamicmediapresentationconformance ..16 Profile specific conformance ..16 7 7.1 Isobasemediafileformatondemandprofile .16 7.2 Isobasemedia file format liveprofile. ..16 7.3 Isobasemediafileformatmainprofile .16 7.4 MPEG-2 transport stream simpleprofile ..17 8 Conformingtest vectors ..17 9 DASH access engine reference software .17 9.1 .17 General 9.2 libdash overview. ..17 9.3 libdash-enabled examplesystem .18 9.4 libdash availability. ..19 10 ConformancesoftwareforIs0/IEc23009-4 .19 ..19 10.1 General 10.2 Design limitations and assumptions ..19 10.3 Usage. .19 11 ConformanceforISO/IEC23009-5serverandnetwork-assistedDASH(SAND) .20 11.1 Conformance rules. .20 11.2 Software 23 11.2.1 Design and architecture .23 11.2.2 Usage 24 11.3 Test vectors 28 12 ConformanceforIS0/IEC23009-6 serverpush .28 12.1 Architecture 28 12.2 Status. 29 @ IS0/IEC 2020 - All rights reserved iii