Abekas Mira User's Operation Manual - Video+Key Channel Pairs
User Operations Guide—Mira Instant Replay Server
176
Copyright ©2014, Abekas Incorporated
Revised: 5 September 2014
Video+Key Channel Pairs
The following configurations of the Mira 8-Channel and Mira 4-Channel servers allow video channel pairs to operate as a “Video+Key” (VK)
transport, with each paired transport having one RS422 serial control port.
With Mira configured this way, each VK channel pair is a single transport, and this VK pair can operate as either a recorder or player.
When Media Files that contain “RGB+Alpha with Audio” are ingested with the Mira Media File Import utility, the clips created in Mira will
have VKA (video+key+audio) tracks—and will play the video and key on the VK paired channels.
IMPORTANT NOTE: The following tables detail the channel pairing for VK channel configuration, with RS422 serial control. No other VK
channel pairing is possible. The shading highlights channels that are paired together for VK operation.
Mira 4-Channel & Mira 8-Channel Servers
Configuration
SD/HD-SDI Video IN / OUT
RS422 Control Port
ChA+ChC | ChB+ChD
VK V V
= VIDEO
= KEY
= VK
= Unused
= VIDEO
= VIDEO
= VIDEO
= VIDEO
ChA+ChC | ChB+ChD
V V VK
= VIDEO
= VIDEO
= VIDEO
= VIDEO
= VIDEO
= KEY
= VK
= Unused
ChA+ChC | ChB+ChD
VK VK
= VIDEO
= KEY
= VK
= Unused
= VIDEO
= KEY
= VK
= Unused
Mira 8-Channel Servers Only
Configuration
SD/HD-SDI Video IN / OUT
RS422 Control Port
ChE+ChG | ChF+ChH
VK V V
= VIDEO
= KEY
= VK
= Unused
= VIDEO
= VIDEO
= VIDEO
= VIDEO
ChE+ChG | ChF+ChH
V V VK
= VIDEO
= VIDEO
= VIDEO
= VIDEO
= VIDEO
= KEY
= VK
= Unused
ChE+ChG | ChF+ChH
VK VK
= VIDEO
= KEY
= VK
= Unused
= VIDEO
= KEY
= VK
= Unused
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