VideoConferenceSD Versione del 30 Mar 2009 alle 12:48 di VittorioPalmisano (Discussione | contributi) (diff) ←Older revision | view current revision (diff) | Newer revision→ (diff)

Quality Adaptation for 640x480 pixels Video (Conference) over IP

BEST with "Angels & Demons" video sequence

BEST (Bandwidth Estimation) video application over a time-varying variable bandwidth, RTT=100ms. Video resolution: 640x480, 25 FPS.
Techical features: H.264 codec, Bandwidth Estimation, Adaptation, Congestion Control, FEC

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• Go to 60s (when bandwidth drops from 1000 kbps to 384 kbps)
• Go to 120s (when bandwidth drops from 384 kbps to 240 kbps)
• Go to 180s (when bandwidth goes up from 240 kbps to 384 kbps)
• Go to 240s (when bandwidth goes up from 384 kbps to 1000 kbps)
• Go to 300s (when bandwidth goes up from 1000 kbps to 2000 kbps)

BEST with "Sunflower" video sequence

BEST (Bandwidth Estimation) video application over a time-varying variable bandwidth, RTT=100ms. Video taken from <a href="http://media.xiph.org/ldv/pub/test_sequences/1080p/">media.xiph.org</a>, resolution rescaled to 640x480, 25 FPS.
Techical features: H.264 codec, Bandwidth Estimation, Adaptation, Congestion Control, FEC

Get the Flash Player to see this player.

• Go to 60s (when bandwidth drops from 1000 kbps to 384 kbps)
• Go to 120s (when bandwidth drops from 384 kbps to 240 kbps)
• Go to 180s (when bandwidth goes up from 240 kbps to 384 kbps)
• Go to 240s (when bandwidth goes up from 384 kbps to 1000 kbps)
• Go to 300s (when bandwidth goes up from 1000 kbps to 2000 kbps)