TANDBERG EN8000, Справочное руководство

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Web Browser Interface — Video Menu
Page 5-26 Reference Guide: EN8000 MPEG-4 Part 10 (H.264/AVC) Encoders
ST.RE.E10233.1
Table 5.9: HD Video Source Option Descriptions (continued)
Selected Item Options Description
Off Noise reduction off.
Adaptive 1 Use noise reduction if necessary but don’t introduce artifacts.
Adaptive 2 Medium adaptive noise reduction, best compromise between Adaptive 1 and 3
Adaptive 3 Very powerful adaptive noise reduction. May introduce some filter artifacts but
will remove as much noise as is possible.
Adaptive 4
Used for turn-around systems where the input video signal includes coding
artifacts.
Fixed 1 Weak non-adaptive noise reduction independent of input noise.
Fixed 2 Medium non-adaptive noise reduction independent of input noise.
Fixed 3 Strong non-adaptive noise reduction independent of input noise.
Noise Reduction:
This option enables the noise
reduction feature to be switched on
(at different levels) or off.
The feature can be used when the
incoming picture material is
corrupted by high frequency noise
(such as white noise). When noise
reduction is enabled, the Encoder
applies sophisticated edge
preserving filters on the incoming
material and removes the noise
that can reduce the encoding
difficulty considerably. Refer to
Application Note ST.AN.1094,
Video Noise Reduction and
Compression
for more information.
Only available when licence key
EN8000/SWO/NR enabled.
The noise reduction module has two stages which are available for each frame:
Estimation of the level and type of noise in the frame; and
Application of the noise reduction filter at one of four levels of noise reduction capability dependent on
the results of the estimation stage.
The operator has a choice of four settings for the estimation (called Automatic) to be selected or for the
estimation stage to be ignored and one of the fixed levels to be used independent of the noise level
(called Manual).
Freeze Frame The last video frame received is encoded if the video input is lost.
Black A black screen is encoded if the video input is lost.
OP Video Loss:
Gives the choice of what is
displayed on the television screen
in the event of losing video input.
Bars Bars test pattern is encoded if the video input is lost.
Time Code: This is for status only and cannot be changed.
Auto The Encoder examines the incoming video stream and extracts any time code
that it can find.
VITC-1 The Encoder extracts the VI time code contained within Field 1 of the incoming
video stream.
VITC-2 The Encoder extracts the VI time code contained within Field 2 of the incoming
video stream.
LTC The Encoder extracts the linear time code within the incoming video stream.
Free-Wheel/Drop
Frame The time code increments by a frame period between each frame but some
codes are repeated for the 29.97 Hz operation to match minute boundaries
exactly. The time code starts at 00:00:00:0 at power up.
Time Code Source:
Indicates the time given by the
Vertical Interval Time Code (VITC)
or generated by the Encoder.
It is for status only and cannot be
changed.
The Encoder is able to extract the
incoming time code irrespective of
its type or location. Only one of the
time codes is used and the order of
preference as shown alongside:
Free-Wheel The time code increments by a frame period between each frame and time codes
are not repeated. The time code starts at 00:00:00:0 at power up.
Set 00:00:00 The outgoing time code is fixed at 00:00:00:0.
Free-Wheel/Drop
Frame The outgoing time code freewheels from the previous known value and repeats
some codes for 29.97 Hz operation.
Time Code on Error:
Free-Wheel The outgoing time code freewheels from the previous known value and each time
code is unique.
Video Locked:
Displays whether the video is
locked. This option is for status only and cannot be changed.