BETV
PILOT SYSTEM
The
aims of the Broadband Educational Television pilot were to:
1. demonstrate a range of BETV services
2. demonstrate immediate delivery strategies
3. demonstrate trial BETV technology and architecture
4. re-purpose existing assets
5. produce new 'Broadband Ready' materials
6. identify new asset requirements and partners
7. develop the early stages of a Theoretical Cognitive Framework
8. develop new production strategies
9. forecast large-scale production costs
Using
and integrating the latest technology from Telestream, Virage,
and IBM, Open Mind oversaw the provision of a powerful end-to-end
solution which seamlessly integrated media acquisition, encoding,
indexing, management and distribution of streaming media.
Original Pearson content was first digitized into broadcast quality
MPEG2 files, using a Telestream ClipMail Pro encoding/delivery
appliance, which were then delivered via TCP/IP to FlipFactory
software running on an IBM server. FlipFactory, which automatically
reformats media into virtually any streaming format and bit rate,
was used in the Pearson project to simultaneously encode the source
file into multiple versions of QuickTime 4 streaming media (at
40kb, 256kb and 400kb data rates) and to send these files to an
IBM Content Manager and Video Charger server and storage cluster
for delivery to web clients. FlipFactory also extracted closed-caption
data (a transcript of each programme) from the MPEG2 file and
published this, along with links of all the streaming media versions,
to the Virage VideoLogger indexing and media management application.
This process created searchable metadata (through sub-titles,
content descriptions, and even keywords in the dialogue).
The
BETV pilot was the first project to make use of new FlipFactory
software features, which included enhanced integration with Virage
closed captioning extraction and notification.
The
end result was that 200 hours of the Pearson tape-based libraries,
together with several interactive CDROMs, were transferred into
a fast, efficient, searchable digital online library. Users could
search the system, contextually or using free text, for subjects
of interest. The users would then select the streaming content
they wanted, point to which ever version best suited their bandwidth
connection, and retrieve and view the relevant part of the original
material, from anywhere on the Internet.
The
pilot system, running in our offices in London, was demonstrated
live to the IBM stand at the NAB exhibition in Las Vegas in 2001.