streaming media at umbc. what is streaming? true streaming vs. playback of downloaded filestrue...
TRANSCRIPT
Streaming MediaAt UMBC
QuickTime™ and aVideo decompressorare needed to see this picture.
What is Streaming?
• True streaming vs. Playback of downloaded files
• A steady flow of data to the client- Buffered data - Bitrate of the stream must exceed the rate
at which it is played out.
Streaming Media in the Corporate World
• 25% large companies currently using streaming- Advertising, branding, corporate
communications and training
• Use doubled in 18 month period 2000-2001 (eBiz Oct. 2001)
The Bandwidth Bottleneck
• Broadband vs Narrowband- Broadband in 10% of homes
• Reduce bandwidth by- Reducing frame rate- Reducing resolution- Compression (codecs)
Streaming Media Architectures
• Real Networks- 25.9M
• Windows Media- 21.5M
• QuickTime- 7.3M
Jupiter Media Metrix
Codecs for the Web
• Internet (Narrowband)- Real SureStream- Sorenson (Quicktime)
• Intranet (Broadband)- MPEG 1, 2, 4
Desktop Video
• Acquire media
• Capture (Digitize)
• Edit and Compress
• Deliver - Stream- DVD/CD-ROM- Tape
Editing and Compression
• Digital editing - Adobe Premiere- FinalCut Pro- iMovie
• Compression- Cleaner- QuickTime, Real, WindowsMedia
Delivering Content
• On-demand and Live
• HTTP Streaming
• QuickTime Server
• Real Server (Helix)
• Windows Media
Streaming at UMBC
• Internet- Real- Quicktime
• Intranet- IPTV- MPEG
IP/TV Player
• Available on the UMBC Internet CD
• Mac TV
• Content also available on UMBC Streaming Media site
Streaming at UMBC
Mapping the Patapsco UMBC Magazine
Streaming Umbrella Group
UMBC Music “Listening Room”
ResNET
The Excellent Internet Adventure
Streaming at UMBC
FINWeb Tutorials
Art History Lectures
FlashCom Server
Streaming at UMBC
art@radioStreaming Umbrella Group
Future Directions
• Uniform Serving?- Helix- Mpeg4- Simplified content creation- Broadband
Faster downloads decrease need for true streaming while increasing streaming audience
Want to Know More?
Contact
www.umbc.edu/iptv
www.umbc.edu/studio
Accessibility
• (6) Support Universal Accessibility to Streaming Media:
• Effective design of streaming media content will need to consider and address the provision of
• closed-captioning (for persons with hearing impairments), descriptive audio tracks (for persons
• with blindness) and other Web accessibility components. In addition to aiding persons with
• hearing impairments, closed captioning also has the potential to provide improved indexing and
• searching of content
Capturing Media
• Capture Cards
• FireWire (IEEE-1394)
• Analog/Digital Converters