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36
Selenio X100
Installation and Operation Manual
Actual Video Delay Used
Frame Sync Fast Switch
Audio/Video Align
Analog Input Control (Video)
The read-only Actual Video Delay Used parameter reports the actual video delay in
frames, based on the cumulative number of frames derived from the delay parameters
found in the Video Sync and Delay controls.
The Frame Sync Fast Switch mode is located at Video > Processing Channel 1/2 >
Video Sync and Delay 1/2. This feature works the same as a line synchronizer, in that
when there are two inputs that are locked, timed, and switched into the frame sync, there
will not be a frame freeze on the output. However, when the Frame Sync Fast Switch is
enabled, the inputs do not have to be locked. If the two inputs happen to be within a few
lines of when the switch takes place, there will be no freeze on the output.
Because the switching happens in the VBI in Frame Sync Fast Switch mode, this feature
should not be enabled for video with embedded non-PCM audio such as Dolby. Otherwise
glitches will occur during the switch.
On its own, the Sample Rate Conversion block adds delay, relative to the video signal. To
correct this synchronization problem, the Video Sync and Delay > Audio/Video Align
parameter adds a fixed delay to the video processing path. Select Yes to enable this
feature.adjust all of the options of a particular group in tandem, rather than separately.
The optional X100OPT-AVIO module provides dual-channel analog video input and output
processing.
When the X100OPT-AVIO softkey is installed, the X100 supports the following different
types of analog video inputs: Composite, CAV (RGB), CAV (YPrPb-SMPTE), and CAV
(YPrPb-Betacam)).
You must select the proper video type to decode by choosing the type in Video > Analog
Input Control > A to D 1/2 > Analog Input Type. If the input video contains pedestal,
you may set the Analog Input Pedestal parameter to Yes for proper luma level scaling.
You may also enable 3D comb filtering by setting the 3D Comb Decoding parameter. The
X100also supports time base correction for low- quality input video feeds from sources such
as VTRs or DVD players. To enable time base correction, set Analog TBC to On. You must
also set the Loss of Video parameter to TBC for bad quality video. Otherwise the frame
sync may freeze occasionally. For good quality video, set the Loss of Video parameter to
Normal.
White slope and black stretch are controlled in the Color Corrector section (page
37).
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