Crystal Vision Introduction
M-SAFESWITCH-2/2L User Manual R1.4 421 July 2022
1 Introduction
M-SAFESWITCH-2 and M-SAFESWITCH-2L are 3G/HD/SD-SDI intelligent dual clean switch
software apps that run on the MARBLE-V1 media processor – purpose-built GPU/CPU
hardware that fits in the Vision frame. Featuring two independent 2x1 switches, source A to B
switching can be triggered automatically based upon user configurable input fault conditions,
or manually – useful for planned maintenance on the primary programme channel.
Like all MARBLE-V1 video processing software apps, the M-SAFESWITCH-2 and M-
SAFESWITCH-2L can be used with IP (ST 2022 or ST 2110 video), with SDI or with both IP
and SDI at the same time (thereby providing gateway functionality).
The M-SAFESWITCH-2 and M-SAFESWITCH-2L will be referred to collectively as M-
SAFESWITCH-2/2L throughout this manual.
M-SAFESWITCH-2:
•Dual 2x1 clean switch for 3G/HD/SD SDI or IP video
•Switch from source A to B automatically based upon user configurable input
fault conditions, or manually
•Four video inputs for input source selection to each switch
•Three video outputs (two SDI or IP, one IP only) routable to the output from
each switch or direct to inputs for monitoring
•Monitor and switch upon input not present, input format error, video black, video
frozen, video error, network error, audio channels missing, audio channels silent
•Latch the switch to source B, or automatically return to A after the source has
been free from error for a user adjustable delay time
•Ten frames adjustable video input delay per input, in one frame increments
•Additional Source B frame delay of up to 60 frames to compensate for systems
where Source A is subjected to a long delay e.g. arrival from a graphics system
M-SAFESWITCH-2L:
•As above but with RGB legalisers on each output
•When enabled, legalisers clip RGB to be within the limits specified by the EBU
R 103 recommendation
•Choice of clipping mode: Constant Hue, Desaturation or simple Hard / Medium /
Soft clip
