SummaryOptional Additional Supplemental Enhancement Information which can be added to an H.263 bitstream to provide backward-compatible enhancements, including: • Indication of use of a specific fixed-point IDCT. • Picture Messages, including the message types of: - Arbitrary Binary Data; - Text (Arbitrary, Copyright, Caption, Video Description, or Uniform Resource Identifier); - Picture Header Repetition (Current, Previous, Next with Reliable Temporal Reference, or Next with Unreliable Temporal Reference); - Interlaced Field Indications (Top or Bottom); and - Spare Reference Picture Identification. |