Samsung QND-6010R User Manual page 40

setup screen
to add/change the video profile
The profile setup can be added or modified to accommodate various profiles depending on the recording
conditions.
1. In <video profile>, click the <add> button.
2. Provide the name and select a codec.
3. Specify the conditions under which the codec will be applied.
4. Specify the details of the selected codec including resolution and frame rate.
Click the <Show> button to display detailed items.
• Resolution : Set the video size of the H.264/H.265 and MJPEG files.
• Framerate : Set the max number of video frames per sec.
• Maximum bitrate : Set the max bit rate of video when the bit rate control is set to VBR.
As the bit rate can be adjusted limitedly according to the resolution, frame rate and screen complexity, the actual bit rate
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can be greater than the maximum bit rate. So you must consider the use conditions when setting the value.
• Target bitrate : Set the target bit rate when the bit rate control is set to CBR.
• Bitrate control : You can select one from constant bit rate and variable bit rate for compression. Fixed
bitrate means that the network transmission bitrate is fixed while varying the video quality or frame rate,
variable bitrate means that a higher priority is placed on the video quality while varying the bitrate.
After setting the fixed bit rate for bit control, if you select the video quality priority mode, depending on the complexity of
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the screen, the actual transmitted frame rate may differ from the frame rate setup in order to guarantee the optimal video
quality for the given bit rate.
• Encoding priority : You can set the priority of video transmission to frame rate or compression.
• GOV length : It specifies the distance (in terms of number of frames) between two consecutive I-Frames
in a video sequence when H.264/H.265 codec was selected. (One I-Frame + 0~Several P-Frames)
• Profile : You can select the H.264/H.265 profiling method.
• Entropy coding : Reduce the possible compression loss due to encoding.
• Dynamic GOV : When the bit rate control is VBR in H.264/H.265 codec, it makes the GOV length
automatically change to the set value of the maximum dynamic GOV.
• Multicast(SVNP) : Specify the use of the SVNP protocol.
- IP address : Enter an IPv4 address with which you can connect to the IPv4 network.
- Port : Specify the video communication port.
- TTL : Set the TTL for the SVNP packet.
40_ setup screen
• Multicast(RTSP) : Specify the use of the RTSP protocol.
- IP address : Enter an IPv4 address with which you can connect to the IPv4 network.
- Port : Specify the video communication port.
- TTL : You can set the TTL for the RTP packet.
If you set the Multicast address to 224.0.0.0~224.0.0.255, multicast may not work properly in all environments. In that
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case, we recommend you change the multicast address.
what is Gov length?
GOV(Group of Video object planes) is a set of video frames for H.264/H.265 compression, indicating a
collection of frames from the initial I-Frame (key frame) to the next I-Frame. GOV consists of 2 kinds of
frames: I-Frame and P-Frame.
I-Frame is the basic frame for the compression, also known as Key Frame, which contains one complete
image data. P-Frame contains only the data that has changed from the preceding I-Frame.
For H.264/H.265 codec, you can determine the GOV length.
If you set a recording profile with H.264/H.265 codec, the GOV length will be framerate/2.
what is dynamic Gov?
Dynamic GOV is a function that enables the GOV to automatically change in a range from the set value of the
minimum GOV length to the maximum dynamic GOV set value according to the situation of the video.
In a video with almost no motion, GOV operates with the dynamic GOV settings, which makes the bit rate of
the entire video reduced. The I-frame is output right after a motion is detected and GOV operates with the
GOV length settings until the motion disappears.
If you use this function, the GOV of a video operates with the minimum GOV length settings.