Basler BIP2-DXXXXc-dn, Руководство пользователя

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AW00101510000 Configuring the Camera
Basler IP Fixed Dome Cameras 33
Encoder Type
- (continued from previous page)

YUV (RT triggered)
= The camera will use the I420 color format for outputting uncompressed
YUV images. The output will be an HTTP stream. Live recording is also supported. This
encoder type is available when using the camera’s real-time trigger feature.
For more information about the real-time trigger feature, see Chapter 7 on
page 100 .
Note that the large size of the uncompressed YUV images may have an impact on the camera’s
overall performance.
For more information about the YUV encoder type, see the
Lossless YUV Images
application
note (AW001261). You can download this document from the Basler website:
www.baslerweb.com
Encoder Mode
- Sets the encoder mode for the stream.

CBR
= The encoder will operate in Constant Bitrate mode. The encoder attempts to maintain a
constant output bitrate by adjusting image quality as necessary. The bitrate will be determined
by the setting of the
Bitrate
parameter.
(Setting the
Encoder Mode
to
CBR
can help you conserve bandwidth. When
CBR
is selected,
you can set the
Bitrate
parameter to a low value and this will cause the camera to use less
bandwidth. This is especially useful if you are operating a system with multiple cameras.)

VBR
= The encoder will operate in Variable Bitrate mode. The encoder attempts to maintain
constant image quality by adjusting the output bitrate as necessary. The quality level will be
determined by the setting of the
Quality
parameter.
Note that if the
Encoder Type
parameter is set to
JPEG (triggered)
, the
Encoder Mode
parameter setting will be fixed at
VBR
.

CVBR
= The encoder will operate in Constant-Variable Bitrate mode. As long as there is no
motion in the scene, the encoder attempts to maintain a constant output bitrate by adjusting
image quality as necessary. The bitrate will be determined by the setting of the
Bitrate
parameter.
When the scene includes motion, the camera will increase the output bitrate (up to a maximum
determined by the setting of the
Maximum Bitrate
parameter) for an extended period of time.
When that time ends, the camera will reduce the bitrate as needed to achieve a long term
average bitrate equal to the setting of the
Bitrate
parameter.
Note that the
CVBR
setting will only be available when the
Encoder Type
parameter is set to
H.264 Base Profile
or
H.264 High Profile
.

Capped VBR
= The encoder will operate in Capped Variable Bitrate mode. This is the default
mode when communication with the camera occurs via ONVIF. By setting both the
Quality
and
Maximum Bitrate
parameters, you can ensure that the encoder attempts to maintain the
desired quality without exceeding a certain bitrate at which the performance of the camera
would be negatively affected.
Note that the
Capped VBR
setting is only valid when the
Encoder Type
parameter is set to
H_264 or JPEG.
Quality
- If the
Encoder Mode
parameter is set to
VBR
, then the
Quality
parameter will determine
the quality level of the images in the stream. A higher setting means better quality.
Using higher quality settings will reduce the rate at which the camera can encode and stream
images. Using lower quality settings will increase the rate.