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The share of time-shifted content as compared to conventional broadcast TV programming has been on a continual upward trend.  One third of U.S. consumers currently use a digital video recorder (DVR) or similar device for time-shifting.  However, as on-demand programming becomes more popular as a substitute for typical time-shifting, more consumers are visiting the Web to access their favorite shows and movies on a computer or mobile device.  Consequently, the Web is quickly becoming a popular choice for on-demand digital TV that incorporates content downloads and streaming using Web protocols.

The Streaming of MPEG Media over HTTP Ad Hoc Group (now known as the Dynamic Adaptive Streaming over HTTP (DASH) Ad Hoc Group) began working on the development of a specification and published a call-for-proposals in May 2010 to address this growing market.  After an initial evaluation period in July 2010, DASH Ad Hoc Group adopted 3GPP’s Release 9 as a baseline specification and began running several evaluation experiments. The DASH Ad Hoc Group is working on the standardization of the manifest file, delivery format, conversion to and from existing file formats, and the use of MPEG2 Transport Streams as a media format. The DASH Ad Hoc Group has also been coordinating closely with the 3GPP SA4 Working Group to better align their respective specifications in this area.

More information and the current version of the specification can be found at: http://mpeg.chiariglione.org/working_documents.htm#MPEG-B

Cisco would like to make the following public announcement to promote faster adoption of this developing standard and achieve a market-wide common implementation:

For conformant implementations of the final MPEG DASH specification (hereinafter “the standard”), Cisco plans to make available any necessary patent claims under the ISO/IEC/ITU Common Patent Policy’s royalty-free RAND licensing option.

For further information, please contact: standards-ipr@cisco.com

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1 Comments.


  1. Murali – Glad to see Cisco working on DASH. It’s got something for everybody – standards, video profiles, DRM, potential for new advertising models – and it means less fragmentation.

    Also glad to see Cisco making patent claims available under royalty-free RAND.

       1 like

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