DOC-USR-0061-03
___________________________________________________________________________________________
Z3 Technology, LLC
♦
100 N 8
th
ST, STE 250
♦
Lincoln, NE 68508-1369 USA
♦
+1.402.323.0702
46
9.5
The CH1/CH2/CH3 Tab
Parameter
Options (default in bold) Notes
Video Source
HD-SDI
HDMI
Composite
In the default mode of “Encoder
Interlaced/Progressive”, this will be “HD-SDI” for
CH1 and a choice between “HDMI” and
“Composite” for CH2. For “Encode 1 to 3” mode,
the user can select between “HD-SDI”, “HDMI”, or
“Composite” for CH1 (and CH2/CH3 will match
whatever is chosen for CH1).
Video Resolution
320x180 – 1920x1080
(
1280x720
)
Follow Input
The encode resolution. If this resolution is different
from the capture resolution, resizing will occur.
“Follow Input” generates the resolution based on
the capture resolution. [
Note 1
]
Video Bitrate
100 – 12000K (
6000K
)
The bitrate.
Video Profile
High
Main
Baseline
The H.264 profile of the bitstream. Generally High
is used for 1080p, Main for D1 and Baseline for <D1.
Frame Rate Divider
1
, 2, 4, 6
Used to encode at less than the input frame rate
(for example, an input frame rate of 30fps with a
divider of 2 would cause an output stream of
15fps). If interlaced input is used then this is used
to reduce the number of fields being encoded.
[Note 2]
Number of B-frames
0
– 2 (
0
)
The number of B-frames. A value of “0” means B-
frames are disabled.
Noise Filter
On
Off
Turns on an optional noise filter. This helps reduce
noise in high-detail areas (for example, around
text). The tradeoff is some detail may be lost when
the filter is turned on.
GOP Size
10 – 240 frames (
60
)
I-frame frequency. [
Note 3
]
Maximum Delay
0 – 3000 (
2000
)
# of ms to buffer. The higher the value, the
smoother the encode, but also the higher the
latency (see Section 6.9, “ Tuning for Latency” on
page 23).
