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Next: Overview of H.261 Up: Video and Audio Compression Previous: Video Compression

H. 261 Compression

H. 261 Compression has been specifically designed for video telecommunication applications:

• Developed by CCITT in 1988-1990

• Meant for videoconferencing, videotelephone applications over ISDN telephone lines.

• Baseline ISDN is 64 kbits/sec, and integral multiples (px64)

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• Overview of H.261
• Intra Frame Coding
• Inter-frame (P-frame) Coding
• The H.261 Bitstream Structure
• Hard Problems in H.261
  • Motion Vector Search
  • Propagation of Errors
  • Bit-rate Control

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Dave Marshall
10/4/2001