Taking DASH to the next level at IBC2012
04 September 2012
The new adaptive streaming standard MPEG-DASH is set to be one of the hottest topics at IBC in Amsterdam this year - and the EBU stand (10.F20) will be a key destination for anyone keen to learn what it can do. Visitors will have a chance to see firsthand the groundbreaking trial that Belgian broadcaster VRT ran during the London Olympics, along with a fresh new demo that shows time-shift modes in action and brings DASH to HbbTV. MPEG-DASH simplifies the streaming infrastructure for broadcasters while adding important new features.
During the Olympic Games in London 2012 the EBU fostered the first large scale live public trial of MPEG-DASH for the audience of VRT. And at IBC you can experience this trial again on the EBU stand. Support comes from a number of DASH Industry Forum members. Encoding is provided by Elemental, Harmonic and Media Excel; streaming origins are courtesy of Wowza and CodeShop, who also provide encryption; web clients for PC and Android are supplied by Adobe; and BuyDRM is providing applications for iOS and Android, which incorporate its DRM solution.
The VRT demo features a live video stream encoded using the MPEG-DASH ISO Base Media File Format Live Profile, delivered through Belgacom’s Content Delivery Network to a range of device categories, including tablets, smartphones and PCs running iOS, Android and Windows operating systems.
Merging linear with on demand
Another demo on the EBU stand - and another first - will feature MPEG-DASH playback on an HbbTV 1.5 compatible Connected TV. A real HbbTV application is triggered by a broadcast transport stream that will play back both a Live and an On Demand video file. Other devices will be served with the same MPEG-DASH file format containing H.264 video. The interfaces of these devices allow rewind of video up to one hour before the actual time (during Live broadcast).
With MPEG-DASH the video client can switch between different bitrate video streams automatically and therefore adapt to changing network conditions. The different devices in this demo obtain different manifest files offering the best streams. This set-up gives content providers the possibility of addressing different device classes with specific video streams optimized for the platform in question.
Support for the HbbTV and time-shift demo comes from AuthenTec (applications for Android and iOS); Adobe (Flash player to support MPEG-DASH); CodeShop (Unified Streaming Server); DekTec (DVB modulator); Elemental Technologies (encoding); and LG (first Connected TV prototype supporting HbbTV 1.5 with MPEG-DASH profiles).