Full HTML for

Basic foilset NPAC Technology for Lecture Recording and Playback

Given by Marek Podgorny at ASC Dayton OH Project Review on 3 April 98. Foils prepared 12 April 98
Outside Index Summary of Material

This is an interim report on an NPAC activity to generate multimedia database support for ASC as part of DoD Modernization program
ASC wishes to use their in class video cameras and audio recorders to archive training material.
NPAC's task was the Design, implementation, and deployment of automated system for capture, storage, indexing and retrieval of this information.

Table of Contents for full HTML of NPAC Technology for Lecture Recording and Playback

 Denote Foils where Image Critical
Denote Foils where HTML is sufficient
1 NPAC Technology Lecture Recorder and Player
2 Abstract of NPAC Project Report
3 Project Goal
4 Courseware Conversion
5 Status Review: Playback tools
6 Status Review: Slide playback tools
7 Status Review: Video conversion tools
8 Status Review: Web Publisher
9 What is needed for publishing?
10 Requirements for lecturers
11 Supported formats
12 Video and audio formats
13 Video and audio formats
14 Navigation and random access

Outside Index Summary of Material

HTML version of Basic Foils prepared 12 April 98

Foil 1 NPAC Technology Lecture Recorder and Player

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
ASC Presentation April 3 1998
Dayton
Marek Podgorny
NPAC
Syracuse University
HTML version of Basic Foils prepared 12 April 98

Foil 2 Abstract of NPAC Project Report

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
This is an interim report on an NPAC activity to generate multimedia database support for ASC as part of DoD Modernization program
ASC wishes to use their in class video cameras and audio recorders to archive training material.
NPAC's task was the Design, implementation, and deployment of automated system for capture, storage, indexing and retrieval of this information.
HTML version of Basic Foils prepared 12 April 98

Foil 3 Project Goal

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
Design, implementation, and deployment of automated system for capture, storage, indexing and retrieval of classes
  • System components:
    • capture station with format conversion capability
    • automated publishing system for quick Web deployment
    • automatic indexing system for two-way video/foils synchronization
    • searchable audio/video and presentation repository
    • a set of playback tools for streaming delivery of foils over video
HTML version of Basic Foils prepared 12 April 98

Foil 4 Courseware Conversion

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
Conversion of the existing recorded material
  • Chuck Koelbel's MPI class has been digitized and converted as follows:
    • entire 2-day course recorded on tape has been digitized to high-quality MPEG1 video
    • Internet-quality (H263) video of the entire course has been produced
    • all presentation slides have been converted to the Web-compliant format
    • the entire class has been indexed to provide synchronous foils over video playback
  • entire package ready for Web publication now.
HTML version of Basic Foils prepared 12 April 98

Foil 5 Status Review: Playback tools

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
Java audio/video and audio players
  • H.263 video and ADPCM audio
  • streaming players using either http protocol or local data files as data source
    • video server support will be available in the next phase
  • available in both stand-alone and collaborative versions (same set of tools for synchronous and asynchronous delivery)
  • support for time/event indexes
  • Status: available
HTML version of Basic Foils prepared 12 April 98

Foil 6 Status Review: Slide playback tools

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
Current support for the following tools:
  • interactive Java whiteboard
    • displays arbitrary images in multiple formats, including GIF, JPEG, and highly-compressed wavelets, as well as standard text
    • supports PowerPoint slides
    • supports drawings created in collaborative synchronous sessions
  • Net-Scene PointPlus Java PowerPoint player
    • compressed, "streaming" PowerPoint presentations.
    • current delivery does not include contents in this format
Not yet supported: arbitrary HTML pages
HTML version of Basic Foils prepared 12 April 98

Foil 7 Status Review: Video conversion tools

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
MPEG1 to H.263/ADPCM converter
  • Off-line audio/video format re-encoder for Win 95/NT
  • Supports multiple qualities of H.263 video
    • adjustable frame size and frame rate
    • full set of advanced encoding options
  • supports random-access streams
    • optional I-frames and frame/file offset look-up tables
  • compatible with output format of the MPEG1 real-time encoder
  • Status: available
  • Missing: GSM/CELP/MPEG4 audio encoder
HTML version of Basic Foils prepared 12 April 98

Foil 8 Status Review: Web Publisher

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
Purpose: one stop interface for automated Web publishing of "video over foils" lectures
  • assemblies all elements of the lecture from local disks
  • transfers all contents to the selected HTTP server
  • automatically creates HTTP server directory structures and all needed HTML files
  • works with all HTTP servers
  • "one button click" operation
  • Status: available early version
HTML version of Basic Foils prepared 12 April 98

Foil 9 What is needed for publishing?

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
Elements needed to publish the course:
  • H.263 video and ADPCM audio files
    • these files do not need to be chopped!
  • PowerPoint presentation converted via Internet Assistant
  • index file (time stamp/foil # pairs)
    • currently must be created manually
    • will be created automatically by lecture recorder
    • a tool for semi-automatic creation for legacy material is optional
HTML version of Basic Foils prepared 12 April 98

Foil 10 Requirements for lecturers

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
Presentation in electronic form turned in few hours (a day?) before the class
  • critical for automatic recording, as automatic indexing will not work without electronic presentation
  • MSRC staff will convert the presentation to one of the supported formats
Lecturers MUST use one of the tools provided with the package to deliver their presentations
  • suggest a PC in the delivery room with pre-installed SW
  • lecturer laptops can be accommodated as presentation/ recording tools downloadable
HTML version of Basic Foils prepared 12 April 98

Foil 11 Supported formats

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
HTML version of Basic Foils prepared 12 April 98

Foil 12 Video and audio formats

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
MPEG1 for DREN and intranet distribution
  • Bandwidth: 1.5 Mbps
  • Quality: 30fps, CD quality audio, SIF (320x240)
  • Actual performance CPU-dependent
  • Current player: ActiveMovie, PC only
    • needs video server support (no http streaming)
  • in the works: Java Media Framework player
HTML version of Basic Foils prepared 12 April 98

Foil 13 Video and audio formats

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
H.263 for low-bitrate (Internet) video
  • format/encoder enhanced to accommodate random access and error tolerance by adding I-frames
  • Bandwidth: variable, but starts at 9 Kbps
  • Quality: 3-10 fps, QCIF-CIF (9 Kbps=10 fps, QCIF)
  • Current player: both ActiveMovie and Java applet
Audio: ADPCM, GSM, MPEG-4
  • ADPCM: done, 32 kbps
  • GSM: codec done, integration in progress (13 Kbps)
  • MPEG-4: ongoing, slated for early July (6 Kbps)
HTML version of Basic Foils prepared 12 April 98

Foil 14 Navigation and random access

From NPAC Technology for Lecture Recording and Playback ASC Dayton OH Project Review -- 3 April 98. *
Full HTML Index
Current version: video stream drives slideshow
  • Control: play, stop, rewind
  • Reason: uses HTTP protocol and continuous media stream
  • to facilitate random access, manual video editing necessary (labor intensive; tools may be provided)
Target version: two-way navigation with random access
  • needs video server support for random stream access
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