Test and Evaluation of Teleconferencing Video Codecs Transmitting at 1.5 Mbps.
DELTA INFORMATION SYSTEMS INC HORSHAM PA
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This report covers the testing and ranking of motion codecs for teleconferencing operating at 1.544 Mbps. The tests utilized the motion codec test tape previously identified in NCS TIB 85-2 Development of a Video Tape to Test Teleconferencing Codecs and follows the methodology previously developed in NCS TIB 85-1 Development of Methodology to test Video Codecs used in Teleconferencing. Codecs developed by four manufacturers were tested this included all units which were available as regular products before the end of November 1984. Since the results of these tests likely to have considerable impact on the manufacturers, extreme care was taken to ensure are absolute impartiality and fairness in the procedure. Manufacturers representatives actively participated in all testing and provided assurance that the results were representative of the performance capability of their equipment. The subjective evaluation and ranking of te codecs employed all possible safeguards against external influences by test equipments or test arrangements and against any personal prejudice of the evaluators. Keywords include Video teleconferencing Full motion 1.544 Mbps Codecs.
- Non-Radio Communications