1. WE MAKE YOUR VIDEOS FLOW
Industry Leading Streaming Solutions
DASH Reference Software
and Conformance
2014 NAB Show
DASH Talks NAB 14
April 8, Las Vegas, NV, USA
Dipl.-Ing. Dr. Christian Timmerer
CIO | bitmovin GmbH & Alpen-Adria-Universität Klagenfurt
christian.timmerer@bitmovin.com
blog.timmerer.com

2. 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
Scope
1

3. 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/
Components
2

4. 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-BASED
TRANSCODING &
STREAMING
MPEG-DASH
CLIENTS
CUSTOMER
PORTAL
SHOWCASE
 Live
 Timeshift
 Catchup using
EPG Data
Cloud-DASH
3

5. 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/
Conclusions
4

6. WE MAKE YOUR VIDEOS FLOW
Industry Leading Streaming Solutions
Bitmovin
We make your media flow
Bitdash/Libdash
bitmovin GmbH
Lakeside Science and TechnologyPark
Building B01 9020 Klagenfurt Austria | Europe
T +43 463 27008747
E office@bitmovin.net
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