ATSC IP-Datacasting using Windows Media 9 Series
|
As broadcasters build out their infrastructures to support digital television (DTV) they are looking for new business models to enhance their revenue streams to recoup the investments they have made. In the US, Mexico, Canada and other parts of the world DTV standards are defined by the Advanced Television Systems Committee (ATSC). ATSC defines 19.4 Mbps of available bandwidth that can be used to deliver programming. Broadcasters are looking to maximize the usage of this available bandwidth and deliver new services such as subscriptions and video-on-demand. Additionally, enterprises, governments and educational institutions are looking for more efficient ways to deliver audio and video programming.
One way to cost-effectively deliver high-quality programming is using IP-datacasting. With IP-datacasting, other types of digital content can be transmitted in MPEG-2 transport streams, alongside the current MPEG-2 programming. The superior compression in Windows Media 9 Series makes it possible to deliver more standard definition programming, using the same bandwidth currently used to deliver MPEG-2 based programs. Alternatively, broadcasters could deliver a higher level of quality, such as high-definition video with multi-channel audio.
|
|
Delivery of more programming or higher quality audio and video in the current bandwidth
More efficient compression: 1/2 to 1/3 the bandwidth of MPEG2
Easy broadcasting via IP-datacasting to DTV-equipped PCs
|
|
 |
|
|
| |
|
|
|
At NAB'03 Microsoft demonstrated how Windows Media 9 Series SD and HD video could be delivered simultaneously in under 8 Mbps. Sinclair Broadcast Group, which collaborated in this effort, used an Acrodyne high-power UHF transmitter, from one of their local TV stations in Las Vegas. Live content was encoded using the Tandberg EN5920 Encoder for Windows Media 9 Series. SpectraRep provided the systems integration and B2C2 provided the PC tuning.
Click to enlarge
Encoding
File-based WMV9 HD (720p @ 6 Mbps)
Live WMV9 SD (D1 @ 1.5 Mbps) using the Tandberg Television EN5920 Encoder for Windows Media 9 Series
WMA9 Audio (5.1 channel & 2-channel)
Infrastructure
IP-encapsulation using Logic Innovations
PC Tuning & Systems Integration
PC tuning by B2C2
Systems Integration provided by SpectraRep
 Back to the top
|
