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Cisco TelePresence MCU 4200 Series

VSX7000 does not display CIF H.264 at 30fps when connected to an MCU

Why doesn't my VSX7000 display CIF H.264 at 30 fps when connected to a Cisco TelePresence MCU?

The VSX 7000 is designed to use a resolution of SIF (which is a slightly lower resolution than CIF) in regions that use NTSC. SIF can be displayed at 30 frames per second (fps) using H.264. CIF resolution, commonly used in PAL-based systems can be displayed at 25 fps using H.264.

If the frame rate is the most important factor for you, go to Setting > Conferences and set Motion /sharpness tradeoff to Prefer motion to ensure that 30 fps is always maintained. (For information about this setting, see the online help.)

This article applies to the following products:

  • Cisco TelePresence MCU 4200 / MSE 8420
  • Cisco TelePresence MCU 4500
  • Cisco TelePresence MSE 8510 blade
  • Cisco TelePresence Advanced Media Gateway 3600

April 18th, 2011 TAA_KB_64