This configuration adjusts the quality of video/audio recording or changes the schedule of the recording. The configured values are applied to streaming which is transported to network client.
This item selects the camera to apply the changed configuration. The configurations of multiple cameras can be set by clicking check box which is in first column of each row. The changed configurations are applied to all of the cameras simultaneously when the check box of the first row which contains titles of each column is clicked. Untouched configuration items are not applied to all of the cameras.
This item selects a video resolution to use in the recording and streaming.
This item selects a video codec to use in the recording and the streaming. It is selectable between H.264 and MPEG4 codec. H.264 codec has better quality while H.264 consumes more cpu resources on using the same size of the data.
This item decides the number of the frames per one second to use. The bigger its value is, the softer motion is. But the quality is getting worse proportionally when higher frame is used in the same bit rate.
This item selects a predefined bit rate and a key frame interval. 1 is the best quality and the bigger value is, the worse quality is. Even the same level of the quality is selected, the real quality can be different on the type of the IP camera, and selectable ranges of the quality are different.
This item decides the quality of the video to record. The quality is specified by bit rate(bits per second). The higher bit rates are, the bigger needed disk space is. The lower bit rates are, the lower quality of video is. But the quality of the recording will not be much better above certain level.
Bit rate should be adjusted with considering the installed place or the quality of the connected IP camera. Noisy and dynamic screens need bigger bit rate than other ones to get a similar quality to them at least.
For reference, the quality of a common video CD is about 1400 Kbps, and the quality of an internet streaming averages 100K ~ 500K.
Key Frame Interval
This item decides the interval of key frames which can be replayed with lossless in recording. Key frame needs ten to hundred times size of other frames. The larger interval of key frame is, the bigger space other frames can use, so the overall quality will be better. Conversely, the smaller interval is, the less space other frames can use, so the overall quality will be worse.
Bigger interval of key frames makes better quality, but the delay time for seeing the next frame will be longer when the network transmission is delayed or unstable and the program have to wait next frame as some middle frames are lost. Conversely, smaller interval makes worse quality, but the delay time will be reduced.
Also bigger interval makes the seek time longer because the playable video can be obtained when the decoding from the key frame to the desirous of frame is done on searching and playing random position. Conversely, smaller interval makes the seek time shorter.
For reference, the key frame is used with the interval of one second for common video, of about five to thirty seconds for the internet streaming.
This item configures when the recording will be begun before the event in seconds.
The real start time of the recording can be earlier than the configured one. Because correct MPEG4 video can be obtained when recording is begun from key frame, but the location of key frame may not be matched exactly. In this case, recording will be begun from the previous key frame because more recording is better than less one as the characteristics of the NVR device.
For reference, the smaller interval of key frames is, the less error occurred.
This item configures when the recording will be finished after the event in seconds.
This item specifies the content and the location of OSD to display. Content can be of one of name or time. Location can be one of Top or Bottom. You can select one of pattern like Bottom [name,time].
OSD Date Format
This item specifies date format of OSD to display. It is consists of combinations with four digit of year (YYYY), each two digit of month (MM) and day (DD), and sperators (-, /).
This item picks a color of OSD to display.
Sensitive area can be hidden by configuration of privacy zone.
|Configurations for OSD and privacy zone are enabled only in the system with capture card.|
This item decides whether records camera always regardless of the recording schedule or the event recording. The recording schedule should be configured and is able to adjust by clickingbutton per hour when it is not checked.
The recording schedule can be adjusted for each camera. Recording will be done regardless of event recording in hours applied recording schedule.
The schedule manages two information. One is about date, the other is about hours. Each row above configuration screen, is one schedule. A schedule can be added, modified, removed in specified date through this configuration.
One of the created schedule applied to any devices using the schedule. For example, if a schedule applying on 1st of every month is created, all of the configuration for recording, motion detection, sensor are enabled on 1st of every month. And not just adding but also removing will applied to other devices using the schedule, so you should be cautious when you remove a schedule with the use of other device.
The schedule of the user on specific date can be added. Following example will show how to add schedule for every alternate Wednesday. The configuration for date can be begun by clickingbutton on the right top of the window.
Followings are description for each part.
This item selects start date for the schedule. It indicates today basically. The date with schedule is displayed with bold letters.
This item shows the list of the schedule on the selected date from calendar. The configuration in the middle section will be enabled when one schedule from the list is selected. The list for one week providing basically from system is not shown in this list.
This item is a name for the schedule. It is the same with one in the list below calendar.
This item decides the repeat type of the schedule. The types are one execution, continuous execution to the specific date and endless execution.
This item configures start date and end date for selected schedule. It can't be modified directly. Start date is selected date from calendar on the top of the window. End date can be enter from calendar by clickingbutton.
This item configures repeat term of selected schedule.
This item adds a new schedule. The new schedule will be added to the selected date by clicking this button. Desirable schedule is made of name, type of repeat, start and end date, repeat term after clickingbutton.
This item removes the selected schedule.
You should select the start date of the schedule on. Clicking button on the right top of window is needed to add a specific date.
The middle section of the configuration window will be enabled after the untitled schedule is added tobelow . Above screen is for the result of selecting February 5th, 2009 from and clicking button. 3th and 26th day from are displayed with bold font because those day have the registered schedule already.
You need to change the repeat type to Repeat and select the end date from by clicking button.
Repeat term can be configured to the specific term. Below screen is the schedule configuration from February 5th, 2009 to May 15th, 2009 every alternate Thursday.
Figure 3.26. The configuration from February 5th, 2009 to May 15th, 2009 every alternate Thursday Screen
Below screen is the changed configuration to be executed forever.
The specific schedule should be selected andbutton should be clicked when the specific schedule needs to be deleted. The basic weekly schedule of the system cannot be modified or deleted.
The schedule of the specific date can be changed by selecting the date.
If all of the configuration is done, the configuration can be saved by clickingbutton. All of the changed configuration will be discarded by clicking button.
Any schedule can be selected or not selected by one hour. The configuration can be applied to all of the devices by clickingbutton. It can also be applied to only the selected device through the menu in the left top of the window.
The recording schedule can be applied per each camera. The camera will be recorded always regardless of event recording in the time where the schedule is applied.