Basic HTML version of 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. by Marek Podgorny
1 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
2 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)
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