Channel Setup
36
VGA Grid User Guide
Fast encoding
Enables fast encoding. Using this check box may affect
the streaming quality to some extent.
Video encoding profile
Select one of the following encoding profiles that target
specific classes of applications:
1.
Baseline
: for applications requiring additional
data loss robustness
2.
Main
: for standard-definition broadcasts
3.
High
: for broadcast and disc storage
applications
Show time label
If the video needs to be time labeled or timestamped,
this parameter allows you to specify how the date and
time will be displayed. You can add here some text if
necessary.
Click on
Show substitutions
and use the
Format
substitutions
commands to select the desired date and
time format. The commands are described in Table 11
Format Substitutions Commands below. If time labeling
is not required, leave this field blank.
Frame size
Select a frame size from the available values depending
on aspect ratio. This setting allows you to limit the width
and height of the video image. If the video source is
sending resolutions larger than the resolution limit
configured, the video image will be scaled to the
resolution limit. Limiting the file resolution can help to
reduce bandwidth usage.
To enter non-listed resolutions use the blank fields next
to available values.
Key frame interval
Controls the number of frames. Key frames define the
starting and ending points of any smooth transition.
Limit frame rate
Enter a value in terms frames per second. This field is
used to set a frame rate that is lower than the maximum
frame rate at which the VGA Grid can capture images.
Reducing the frame rate reduces the number of images
being captured by the device.
Bitrate
Enter a signal bitrate. A lower bitrate produces lower
quality videos and smaller file sizes. A higher bitrate
produces better quality videos and larger file sizes.
Rate control mode
Used for H.264 and MPEG4 codecs. It specifies the
bitrate encoding for the signal. Select one of the