How much network bandwidth is needed for the various modes supported by Ultra-Videoconferencing?
PCM audio with default sampling (44.1 kHz, 16 bit) requires approximately 706 kbps per channel. DV camera output (audio and video) consumes approximately 25 Mbps; JPEG-encoded full-frame video is similar. Uncompressed analog or dc1394 video at full-frame requires anywhere from 148-270 Mbps depending on colorspace employed; this may be reduced to as low as 37 Mbps by selecting quarter-frame size with -w 320 -h 240. Note also the importance of increasing your IP buffer on the receiving machine, as described below. • Is Ultra-Videoconferencing RTP-compliant? No. Ultra-Videoconferencing is not RTP-compliant, nor do we have any immediate plans to make it so. The software uses its own transport mechanism that was developed specifically for our needs, some of which are incompatible with RTP. • What video modes are supported by Ultra-Videoconferencing? Ultra-Videoconferencing supports video input from either frame grabbers using v4l or v4l2 interfaces (e.g. Bt878 chipset), digital video (DV) c
