Digital Watchdog MEGApix DWC-MT95WiATW, User Manual, Page: 19 / 61

15
Three video streams can be adjustable.
Resolution: Adjust the stream’s resolution from the available options in the
drop-down menu.
Frame rate: The higher the frame rate, the video is smoother.
Bitrate type: CBR and VBR are optional. Bitrate is related to image quality. CBR
means that no matter how much change is seen in the video scene, the
compression bitrate will be kept constant. VBR means that the compression
bitrate will be adjusted according to scene changes. For example, for scenes that
do not have much movement, the bitrate will be kept at a lower value. This can
help optimize the network bandwidth usage.
Bitrate: it can be adjusted when the mode is set to CBR. The higher the bitrate,
the better the image quality will be.
Video Quality: It can be adjusted when the mode is set to VBR. The higher the
image quality, the more bitrate will be required.
I-Frame interval: It determines how many frames are allowed between a “group
of pictures”. When a new scene begins in a video, until that scene ends, the entire
group of frames (or pictures) can be considered as a group of pictures. If there is
not much movement in the scene, setting the value higher than the frame rate is
fine, potentially resulting in less bandwidth usage. However, if the value is set too
high and there is a high frequency of movement in the video, there is a risk of
frame skipping.
Video Compression: MJPEG, H264, H265 can be optional. MJPEG is not available
for the mainstream. Compared to H.264, H.265 reduces the transmission bitrate
under the same resolution, frame rate and image quality.
Profile: For H.264. Baseline, main and high profiles are selectable.
Send Snapshot: How many snapshots to generate for an event.
Videos encode slice split: Enable this function to get an improved image when
using a low-performance PC.
Watermark: When playing back the locally recorded video in the search interface,
the watermark can be displayed. To enable it, check the watermark box and enter
the watermark text.
Audio Encoding: G711A and G711U are selectable.
Audio Type: LIN. MIC can be optional for the model with built-in MIC.