Recording

Definition

Users can set recording plans and storage policies for one or more cameras so that the cameras record video in a specified period.

Customer Benefits

Users can record video in a specified period in key areas and store valuable video clips for future video analysis and evidence collection.

Application Scenario

This feature is applicable when users need to save the video of detection areas for later viewing to analyze incidents or abnormal situations.

Requirements

Application Limitations

None

Scenario Description

Definition

Users can view recordings to analyze incidents or abnormal situations that have occurred in detection areas.

Customer Benefits

Users can analyze recordings during playback.

Application Scenario

After an incident occurs, users can view the video recorded on the previous day to quickly locate the suspect.

Requirements

Application Limitations

• Users cannot play recordings in MJPEG encoding format on the LDU.
• Only I-frames (key frames) are played during recording rewinding.

Scenario Description

Definition

Users can play video from different cameras in multiple video panes concurrently, and simultaneously play back recordings from the same time point.

Customer Benefits

• Users can simultaneously play back video clips recorded at the same time.
• Users can detect the association between multiple recordings in a timely manner.

Application Scenario

A user simultaneously plays back multiple recordings to view the association between the recordings.

Requirements

Application Limitations

• A maximum of four recordings can be played back on the LDU at the same time.
• The network bandwidth needs to support simultaneous playback of multiple recordings.
• Users can control the simultaneous playback, including pause, resume, and quick locating.
• When a channel of recording playback fails or has no recording, other recording playback channels are not affected.
• Only I-frames (key frames) are played during recording rewinding.

Scenario Description

Procedure

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. Right-click on the desktop and choose Playback.
3. Simultaneously play back multiple recordings, as shown in Figure 4-37.
   Figure 4-37 Playing back a recording
   

   Table 4-30 describes the parameters.

   Table 4-30 Parameter description

   Parameter	Setting
   Search Type	Select a search mode as required. Time Bookmark
   Select	Select a date to query recordings. The date, on which there is video recorded, is displayed in green.
   Simultaneous Playback/Asynchronous Playback	Plays recordings of multiple cameras from the same time point or from different time points.

Definition

Users can segment a recording of a long period into multiple video clips and play the video clips in multiple video panes simultaneously.

Customer Benefits

Users can quickly locate the incident time when checking a long video clip.

Application Scenario

A user plays back a recording by segment to quickly locate the time segment when an incident occurs.

Requirements

Application Limitations

• A recording can be segmented into a maximum of 16 video clips.
• Only I-frames (key frames) are played during recording rewinding.
• Only the iClient S100 supports this feature.

Scenario Description

Scenario Description

Procedure

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. Right-click on the desktop and choose Playback > Slice Playback.
3. Select the slice recording to be played back, as shown in Figure 4-38.
   Figure 4-38 Slice recording playback
   

   Table 4-33 describes the parameters.

   Table 4-33 Parameter description

   Method	Setting
   Search By	Select a year from the drop-down list box and select a month, day, and hour. The recording is sliced into 60 video clips every hour, and each video clip is played back every minute.
   Select Date	Select the time point to be queried in a single-node system. The icon of a recording is gray, and the icon of the slice recording playback on the current node is green.

4. Double-click the slice recording for playback, as shown in Figure 4-39.
   Figure 4-39 Slice playback
   

Scenario Description

Procedure

1. Log in to the LDU as the admin user. ( Logging In to the LDU)
2. Right-click on the desktop and choose Playback > Label Playback.
3. Select a camera and set search criteria to search for the bookmarked recording to be played, as shown in Figure 4-40.
   

   You can search for recordings by bookmark name.

   Figure 4-40 Label Playback page
   

4. Double-click a recording to play, as shown in Figure 4-41.
   Figure 4-41 Playing a recording
   

Definition

Users can download recording files to a local computer.

Customer Benefits

Users can collect recordings as evidence and process recordings remotely.

Application Scenario

A user downloads recordings to a local computer for further processing.

Requirements

Application Limitations

• Downloaded recordings are saved in MP4 format.
• Server recordings can be downloaded at full speed (highest download speed provided by the system based on available resources).
• Onboard recordings cannot be downloaded.
• The downloaded recordings can be segmented by size that ranges from 200 MB to 3072 MB. The default size is 2048 MB.
• The downloaded recordings can be segmented by length that ranges from 5 minutes to 720 minutes. The default length is 30 minutes.

Scenario Description

Prerequisites

A removable disk (such as a removable hard disk or USB flash drive) that uses the FAT32, NTFS, or exFAT file system is available.

To check the file system of a removable disk, perform the following steps:

Application Limitations

• Recordings downloaded from the LDU cannot be played back using the Media Player or Xunlei player. You are advised to use the Storm Player, PotPlayer, or VLC.
• Removable disks in NTFS format do not support recording names or paths containing Chinese characters.

Procedure

1. Insert the removable disk into the USB port of the device.
2. Log in to the LDU as the admin user. ( Logging In to the LDU)
3. Right-click on the desktop and choose Playback > Common Playback.
4. Play back a recording, as shown in Figure 4-42.
   Figure 4-42 Playing back a recording
   

   Table 4-36 describes the parameters.

   Table 4-36 Parameter description

   Parameter	Description
   Search Type	Select a search mode as required. Time Bookmark
   Select	Click a date to query recordings. The date, on which there is video recorded, is displayed in green.

5. Select the recording to be downloaded. Click and choose 1-Video Download or N-Video Download from the displayed shortcut menu, as shown in Figure 4-43.
   Figure 4-43 Downloading recordings
   
   • 1-Video Download: Downloads recordings of the current camera whose recording is being played.
     1. On the timeline of the camera whose recordings are to be downloaded, click to select the start time and drag the timeline to select the end time.
     2. In the Video Download dialog box, set File Name, Download Time, Download Path, and Encrypted Download, and click OK.
     Figure 4-44 Downloading recordings of a camera
     
   • N-Video Download: Downloads recordings of multiple cameras in batches.
     1. In the Multi-video Download dialog box, select cameras whose recordings are to be downloaded and set Download Time.
     2. Set Download Path and Encrypted Download, and click OK.
     Figure 4-45 Downloading recordings of multiple cameras in batches
     
   

   For security purposes, you are advised to encrypt recording files.

   • Encrypted recording files are stored in ZIP format on removable disks. Non-encrypted recording files are stored in MP4 format on removable disks and can be opened using a player on a computer.
   • Before downloading a recording file, you need to enter the password. The password is used to decompress the .zip package of the encrypted recording file on the computer.

     The password must meet the following requirements:

     • The password must contain 8 to 32 characters.
     • The password must contain at least two types of the following characters: digits, uppercase letters, lowercase letters, and special characters (! @ # $ % ^ & * ( ) + ~).

6. Manage the recording download, for example, viewing the recording download progress, as shown in Figure 4-46.
   

   Do not remove the removable disk during recording download. Otherwise, recording files will be lost.

   Figure 4-46 Managing recording download
   

Definition

If an abnormality occurs in an area, the team or multiple departments need to coordinate in handling the onsite affairs. The video wall displays historical recordings on a large screen, enabling users to view video more clearly and coordinate the onsite affairs more conveniently.

Customer Benefits

The video wall displays video clearly and makes observation convenient. Video security personnel can detect exceptions on the video wall in a timely manner.

Application Scenario

When a major incident occurs, an operator pushes related recordings to a video wall to provide reference for decision making.

Requirements

Application Limitations

None

Scenario Description

Definition

Users can drag recordings from multiple channels to multiple video panes on a video wall and simultaneously play back the recordings.

Customer Benefits

Users can simultaneously play back multiple recordings on a video wall to explore the association between these recordings.

Application Scenario

A user simultaneously plays back multiple recordings on a video wall to view the association between the recordings.

Requirements

Application Limitations

None

Scenario Description

Table 4-38 describes the support for this feature in different client scenarios.