Retour d'expérience de Hulu sur la production de médias compatibles Smooth Streaming et DASH, et a migration vers DASH en général.

1. BAPTISTE COUDURIER
MPEG DASH

2. 2
AVANT DASH
•HLS, SS, HDS, Widevine
•Un DRM pour chaque format
•Cout de stockage eleve
•Outils de packaging differents et workflow complexe

3. 3
APRES DASH
•Common file format (CENC)
•Un seul fichier, plusieurs DRM
•Manifest format MPD (pas de manifest serveur)
•MSE / EME
•Compatibilite avec d’autres formats (SS, HLS transmux)

4. 4
SIDX
MFRA
FRAGMENT
MOOV
FRAGMENTS
STRUCTURE FICHIER

5. 5
MOOV
PSSH PLAYREADY
PSSH WIDEVINE
PSSH ACCESS
MOOF
SENC (PIFF 1.1)
SAIZ
SAIO
CENC SMOOTH STREAMING COMPATIBLE

6. 6
<?xml version="1.0" encoding="utf-8"?>
<MPD mimeType="text/xml" xmlns="urn:mpeg:DASH:schema:MPD:2011" profiles="urn:mpeg:dash:profile:isoff-on-demand:2011" type="static" minBufferTime="PT5.0S" mediaPresentationDuration="PT1390.472S">
<Period>
<AdaptationSet mimeType="video/mp4" segmentAlignment="true" bitstreamSwitching="true">
<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"/>
<ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95"/>
<ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"/>
<Representation id="1" codecs="avc1.64001E" width="720" height="400" startWithSAP="1" bandwidth="813193">
<BaseURL>http://www.hulu.com/H264_1000_video.mp4</BaseURL>
<SegmentBase indexRange="1540-4931" indexRangeExact="true">
<Initialization range="0-1539"/>
</SegmentBase>
</Representation>
<Representation id=“3" codecs="avc1.64001F" width="1280" height="720" startWithSAP="1" bandwidth="1699859">
<BaseURL>http://www.hulu.com/H264_2000_video.mp4</BaseURL>
<SegmentBase indexRange="1536-4927" indexRangeExact="true">
<Initialization range="0-1535"/>
</SegmentBase>
</Representation>
</AdaptationSet>
<AdaptationSet mimeType="audio/mp4" segmentAlignment="true" bitstreamSwitching="true">
<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"/>
<ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95"/>
<ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"/>
<Representation id="2" codecs="mp4a.40.2" audioSamplingRate="48000" startWithSAP="1" bandwidth="64000">
<AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="1"/>
<BaseURL>http://www.hulu.com/HEAAC_64.mp4</BaseURL>
<SegmentBase indexRange="1483-4838" indexRangeExact="true">
<Initialization range="0-1482"/>
</SegmentBase>
</Representation>
</AdaptationSet>
</Period>
</MPD>
MPD SEGMENTBASE

7. 7
<?xml version="1.0" encoding="utf-8"?> <MPD mimeType="text/xml" xmlns="urn:mpeg:DASH:schema:MPD:2011" profiles="urn:mpeg:dash:profile:isoff-on-demand:2011" type="static" minBufferTime="PT5.0S" mediaPresentationDuration="PT1390.472S"> <Period> <AdaptationSet mimeType="video/mp4" segmentAlignment="true" bitstreamSwitching="true"> <ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc"/> <ContentProtection schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95"/> <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed"/> <SegmentTemplate initialization="$RepresentationID$.init" media="QualityLevels($Bandwidth$)/Fragments(video=$Time$)" timescale="10000000"> <SegmentTimeline> <S d="50050000" r="102"/> <S d="43793750"/> <S d="50050000" r="66"/> <S d="52135416"/> </SegmentTimeline> </SegmentTemplate> <Representation id="1" codecs="avc1.64001E" width="720" height="400" startWithSAP="1" bandwidth="813193"> </Representation> <Representation id=“3" codecs="avc1.64001F" width="1280" height="720" startWithSAP="1" bandwidth="1699859"> </Representation> </AdaptationSet> </Period> </MPD>
MPD SEGMENTTIMELINE

8. 8
COMPATIBILITE
•Approches MPD (SegmentBase, SegmentList, SegmentTimeline)
•CORS
•Support MSE/EME pour tous les navigateurs

9. 9
INSERTION DE LA PUB
•Double lecteur
•Plusieurs approches MPD (SegmentList, SegmentBase)
•Xlink fonctionnalite

10. 10
DEPLOIEMENT
•Gros succes
•100% traffic sur Chromecast, Chrome, IE11, Amazon FireTV, Android 4.2+
•100% SS compatibilite
•15% d’amelioration QOS
•Diminution des couts de stockage et couts