FLIR Ariel Gen IIICB-3308 User And Installation Manual page 108

Configuration and Operation
Note:
Corridor mode does not operate with MJPEG compression.
3. In the Stream1 section, configure the following settings:
a. From Resolution drop-down list, select the desired resolutions. The default is the highest
resolution for each stream.
b. From the Compression drop-down list, select H.264 or MJPEG according to the required
image quality and storage limitations. The default is H.264.
i. If you select H.264, the following fields are displayed:
a. From the Profile drop-down list, select a profile: High Profile, Main Profile, or Baseline
Profile. Each profile targets specific classes of applications.
·
·
·
b. Set the GOP to a value from 1-60 (NTSC) or 1-50 (PAL). The default is 30 for NTSC
and 25 for PAL (one I-Frame transmitted every second).
The GOP is a group of successive pictures within a coded video stream. Each coded
video stream consists of successive GOPs. GOP structure, specifies the order in
which intra-coded frames and inter-coded frames are arranged.
The GOP uses I-Frames (Intra-coded Frames), which are static image files (frames), as
a reference for efficient H.264 video compression. Transmitted video frames are
compared to the I-Frame as they are transmitted. Video quality is higher when the
interval between I-Frames is shorter, but the video needs more network capacity. When
the interval between I-Frames is longer, the video transmission uses less bandwidth,
but the video quality is lower.
102
High Profile (HP)
High Profile is the primary profile for HD broadcast applications, providing the
best trade-off between storage size and video latency. It can save 10-12% of
the storage cost over Main Profile. However, it may also increase video
latency, depending on the stream structure. This is the default profile.
Main Profile (MP)
This profile provides improved picture quality at reduced bandwidths and
storage costs and is becoming more common as the camera processors
(DSPs) become more able to handle the processing load. Main Profile can
save 10-12% over Baseline.
Baseline Profile (BP)
Primarily for low-cost applications that require additional data loss
robustness.
CB-3304/CB-3308 User and Installation Guide
H.264 Settings
March 10, 2019