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WE MAKE YOUR VIDEOS FLOWIndustry Leading Streaming Solutions
DASH Reference Software and Conformance
2014 NAB ShowDASH Talks NAB 14April 8, Las Vegas, NV, USA
Dipl.-Ing. Dr. Christian TimmererCIO | bitmovin GmbH & Alpen-Adria-Universität Klagenfurtchristian.timmerer@bitmovin.comblog.timmerer.com
Scope of Reference Software and Conformance
• Conformance and reference software of MPEG-DASH serves three main purposes:– validation of the written specification;– clarification of the written specification; and– conformance testing for checking interoperability for the various
applications against the reference software which aims to be compliant with ISO/IEC 23009
• ISO/IEC 23009-2: media presentation conformance, test vectors, DASH access engine reference software, sample software
Scope1
Components
• Media presentation conformance– MPD validator: xlink, schema validation, add’l validation rules– Segment conformance: check ISOBMFF, M2TS against DASH specification– Dynamic service validator: dynamic updates of the MPD
• DASH conformance sequences• DASH access client reference software
– libdash: access to information contained in the MPD + schedule download of segments
• Sample software– Sample player: utilizes libdash, GUI, manual adaptation logic– GPAC player: integrated player or embeddable DASH engine– MP4Box segmenter: create segments + MPD based on encoded content
• Computing Now theme– Recent MPEG standards for future media ecosystems– http://bit.ly/1h5tMgq
http://dashif.org/software/
Components2
Cloud-based MPEG-DASH Transcoding and Streaming for Broadcast Scenarios
• Using scalable & flexible cloud infrastructure• MPEG-DASH representations for mobile devices (320p) up to
PC/TV (1080p)• MPEG-DASH playback on multiple devices using HTML5 & Flash
clients• Live / Timeshift / OnDemand using the same MPEG-DASH
content CLOUD-BASEDTRANSCODING &
STREAMING
MPEG-DASHCLIENTS
CUSTOMERPORTAL
SHOWCASE
Live Timeshift Catchup using
EPG Data
Cloud-DASH3
Conclusions
• MPEG-DASH Reference Software and Conformance– Comprehensive toolset for conformance testing– Verification and clarification of the written
specification
• Complementary DASH-IF software tools– Reference client, sample players, sample
segmenters and packagers, libraries, manifest and ISOBMFF validator ➪ http://dashif.org/software/
Conclusions4
WE MAKE YOUR VIDEOS FLOWIndustry Leading Streaming Solutions
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Bitdash/Libdash bitmovin GmbHLakeside Science and Technology Park Building B01 9020 Klagenfurt Austria | Europe T +43 463 27008747 E office@bitmovin.net
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