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Virtual Conferencing Glossary

 

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QCIF (Quarter Common Intermediate Format) -.A ITU-T video format that governs the transmission of video signals over the ISDN. The video format specifies 144 lines of 176 pixels. Contrast with Common Intermedi-ate Format.(CIF)

QQCIF (Quarter Quarter Common Intermediate Format) - A ITU-T video format that governs the transmission of video signals over the POTS and ISDN. The video format specifies 77 lines of 88 pixels. Contrast with Common Intermediate Format.(CIF)

QoS (Quality of Service - Interactive video conferencing requires a high QoS. QOS is important as it deter-mines the quality of your video call. Low quality of service results in latency and a jerky picture with poor and inconsistent audio quality.