H.263 4Cif Guidelines; H.264 High Profile - Polycom RMX 1500 Administrator's Manual

H.264 High Profile

H.263 4CIF Guidelines

• H.263 4CIF is supported with H.323, SIP and ISDN connection
endpoints.
• H.263 4CIF is supported in CP mode only. VSW is supported on the
RMX 1500/2000/4000 in HD only.
• Click & View is supported in H.263 4CIF.
• AES encryption is supported with H.263 4CIF.
• H.263 4CIF is supported in recording by the RSS2000 and other
recording devices.
• All video layouts are supported in H.263 4CIF, except 1x1 layout. In a
1x1 layout, the resolution will be CIF.
• For information about Resource Usage see Table 19-12 on page 19-57.
• H.239 is supported in all 3 resolutions and based on the same
bandwidth decision matrix as for HD.
The H.264 High Profile is a new addition to the H.264 video protocol suite.
It uses the most efficient video data compression algorithms to reduce
bandwidth requirements for video data streams.
Video quality is maintained at bit rates that are up to 50% lower than
previously required. For example, a 512kbps call will have the video
quality of a 1Mbps HD call while a 1Mbps HD call has higher video
quality at the same (1Mbps) bit rate.
Guidelines
• H.264 High Profile is supported with MPMx cards only.
• H.264 High Profile is supported in H.323 and SIP networking
environments.
• H.264 High Profile is supported in Continuous Presence conferences at
all bit rates, video resolutions and layouts.
• H.264 High Profile is the first protocol declared by the RMX, to ensure
that endpoints that support the protocol will connect using it.
H.264 High-Profile should be used when all or most endpoints support it.
Chapter 2-Additional Conferencing Information
2-9