EVS XT-3 - Page 32

Bandwidth and RT Channels at 180Hz (NTSC SLSM 3x)
Codec
Field
Rate
(Hz)
Video
Bitrate
(Mbps)
Fields/
Block
Block-based
bandwidth
(MB/s)
Max. RT
Channels
Apple ProRes 422 LT 179.82 85 12 41.1 9.7
HD Mjpeg Standard 179.82 100 5 102.7 3.9
HD Mpeg-2 Intra 179.82 100 5 102.7 3.9
DVCPro HD 179.82 100 12 41.1 9.7
AVC Intra 100 179.82 111 12 40.0 10.0
Avid DNxHD® 179.82 145 9 53.3 7.5
Apple ProRes 422 SQ 179.82 145 8 60.0 6.6
Avid DNxHD® 179.82 220 6 80.0 5.0
Apple ProRes 422 HQ 179.82 220 5 90.0 4.4
Real-Time Channel Calculation
Rule
The maximum server bandwidth depends on the disks. Based on the assumption that
Seagate disks of 300 GB (10K5) are used in 4+1 raids, the disks will be able to write 400
MB/s, and the maximum server bandwidth is therefore 400 MB/s.
For a mixed configuration with standard and super motion channels on the same EVS
server, the following calculation must be used to ensure that the settings do not exceed
the maximum bandwidth of the server, that is to say 400 MB/s:
(nbr of standard channels x their block-based bandwidth)
+ (nbr of super motion channels x their block-based bandwidth)
For a multi-essence configuration, a similar calculation is used, and the results cannot
exceed the maximum server bandwidth:
(nbr of standard channels x their block-based bandwidth)
+ (nbr of XDCAM channels x their block-based bandwidth)
/(nbr of Lo-Res channels x their block-based bandwidth)
22 4. Software Specifications
EVS Broadcast Equipment SA Issue 12.05.C- November 2014