Creating a Video Wall Layout

1. In the Service Operation panel on the left of the Workspace tab page, double-click Video Wall, as shown in Figure 1.
   Figure 1 Video Wall
   

2. Add decoders. In the Decoder List panel on the Video Wall tab page, click  to access the Add Decoder page.
    NOTE:

   A decoder can register with only one C/S client. Therefore, before adding a decoder to a C/S client, ensure that the decoder has not been added to other C/S clients. If the decoder has been added to another C/S client, the decoder cannot be added on this C/S client.

   • Add decoders one by one, as shown in Figure 2.
     Figure 2 Adding one decoder
     
     1. Click .
     2. Enter the decoder name, IP address, and port number.
         NOTE:

        • The decoder name must contain 1 to 30 characters and cannot contain the following characters: < > ' ; @ " $ * % ) \ / | ? --
        • The default port number of the decoder is 9900.
     3. Repeat 2.a through 2.b to add multiple decoders.
     4. Enter the service user names and passwords for the decoders to register with the C/S client.
        • If the service user names and passwords for different decoders to register with the C/S client are unique, enter the service user name and password next to each decoder separately and click Verify.
        • If the service user names and passwords for different decoders to register with the C/S client are the same, enter the service user name and password at the bottom of the page and click Verify Batch.

          If the verification status is , verification succeeds.

   • Add decoders in batches, as shown in Figure 3.
     Figure 3 Adding decoders in batches
     
     1. Click Export.

        Open the decoders.CSV template and enter Name, IP, and Port and save the settings.

         NOTE:

        • The decoder name must contain 1 to 30 characters and cannot contain the following characters: < > ' ; @ " $ * % ) \ / | ? --
        • The default port number of the decoder is 9900.
     2. Click Import to import the decoder template.
     3. Enter the service user names and passwords for the decoders to register with the C/S client.
        • If the service user names and passwords for different decoders to register with the C/S client are unique, enter the service user name and password next to each decoder separately and click Verify.
        • If the service user names and passwords for different decoders to register with the C/S client are the same, enter the service user name and password at the bottom of the page and click Verify Batch.

          If the verification status is , verification succeeds.

3. Optional: Configure a decoder, as shown in Figure 4.
    NOTE:

   The DEC6108 supports eight HDMI output ports. The default output resolution of each HDMI port is 1080p by default. The 4-pane mode is used by default. To change the output resolution of the HDMI port or the window display mode, refer to the following steps to configure the decoder.

   Figure 4 Configuring a decoder
   
   1. In the Decoder List panel, right-click a decoder and choose Configuration from the shortcut menu.

      The Decoder Configuration page is displayed.

   2. Set Playing mode of the decoder.

      The options are as follows:

      • Image quality first: video with more cache but a high delay
      • Network first: video with less cache and a low delay
   3. Set Output resolution, Window mode and Stream Type of each HDMI port.
      • Output resolution: resolution of the video wall display.
      • Window mode: video wall layout, which can be 1-, 4-, 8-, 9-, 16-, 25-, or 36-pane.
      • Stream Type: The options are Unspecified, Primary stream, Secondary stream 1, and Secondary stream 2.
      The streams automatically adapt to window modes. Table 1 describes the relationship between the number of video panes and adaptive stream resolutions.

      Table 1 Relationship between the number of video panes and adaptive stream resolutions

      Number of Video Panes	Adaptive Stream Resolution
      1/4	4K
      8/9/16	1080p
      25	720p
      36	D1

      During live video viewing on the video wall, the actually requested video streams in different pane modes are determined by the resolution of camera streams.

      • If the resolution of primary streams of a camera is less than or equal to the adaptive stream resolution in Table 1 in the selected pane, the actually requested streams are primary streams. For example, if the resolution of primary streams is 1080p and the adaptive stream resolution in 1- or 4-pane mode is 4K, the actually requested streams are 1080p primary streams.
      • If the resolution of primary streams of a camera is greater than the adaptive stream resolution in Table 1 in the selected pane, the actually requested streams are secondary streams. For example, if the resolutions of primary streams and secondary streams are 4K and 1080p, respectively, and the adaptive stream resolution in 8-, 9-, or 16-pane mode is 1080p, then the resolution of primary streams is greater than that of the adaptive stream resolution, and the actually requested streams are 1080p secondary streams.
   4. Click OK.

4. In the Decoder List panel on the Video Wall tab page, you can view the new decoder and create video wall layouts, as shown in Figure 5.
   Figure 5 Creating a video wall layout
   
   1. In the lower left corner of the Video Wall List panel, click .
   2. Specify the video pane count in the text boxes next to New Layout in the upper right corner and click New Layout.
   3. Drag decoder channels to video panes.
   4. Click Save.

      A new video wall layout is created.

Playing Live Video on a Video Wall

1. Push video to a video wall, as shown in Figure 6.
   Figure 6 Pushing video to a video wall
   
    NOTE:

   • If you want to cancel the video push, right-click the video pane of the camera and choose Video Wall > Stop Video on Video Wallfrom the shortcut menu.
   • After playing video on the video wall, you can switch the video push mode to Preview on Video Wall, Preview and Push on Video Wall, or Push on Video Wall.
   1. On the Live tab page, click .
   2. Select a camera whose live video will be pushed to the video wall.

2. View live video on the video wall.
    NOTE:

   After camera sequencing is performed on the video wall,

   • The  button for pausing the sequencing task is unavailable.
   • If you log in to the decoder web system to configure the time, camera sequencing on the video wall will pause (the live video image does not switch). The sequencing service will automatically resume after about 5 minutes.

Playing Back Video on the Video Wall

1. On the right of the Workspace tab page, click the  icon.
2. Set video playback parameters, as shown in Figure 7.
   Figure 7 Setting video playback parameters
   
   1. In the Cameras panel, select the camera.
   2. In the Video Search panel, set search criteria and click Search.
       NOTE:

      When you search for recordings of another camera, the previous search result will not be automatically cleared. In this case, recordings displayed in the Search Result area may be more than recordings that are actually searched out. To display recordings that are actually searched out, click Clear in the upper right corner to clear the previous search result.

   3. Click the time from which you want to play back the video.
    NOTE:

   • Use a GE network for playing back recordings. When the network bandwidth is lower than 1000 Mbit/s, a negotiation error may occur, leading to frame freezing or artifacts.

3. Click  in the recording playback pane or right-click a video pane and choose Video wall > Display Video on Video Wall from the shortcut menu. The page shown in the following figure is displayed.

   Figure8 Selecting a channel

   

4. Click Video Pane and select a decoding channel. The video is played back on the video wall.
    NOTE:

   • The video wall supports only video playback at 1x speed and does not support frame-by-frame playback, rewind, or playback at other speeds.
   • If you right-click a video pane and choose Video Wall > Display All Video on Video Wall before binding a decoding channel, video cannot be played back on the video wall.
   • If you want to cancel the video push, right-click the video pane of the camera and choose Video Wall > Stop Video on Video Wallfrom the shortcut menu.

Viewing the PC IP Address of the C/S Client to Which a Decoder Is Added

If you forgot the PC IP address of the C/S client to which a decoder is added, perform the following steps to query the PC IP address:

1. Use an SSH tool (for example, PuTTY) to log in to the decoder as the admin user. Then run the su - root command to switch to the root user.
2. Run the netstat -anp|grep 9900 command. The following information is displayed. In the information, 192.168.60.122 is the decoder IP address, and 192.168.10.110 is the PC IP address of the C/S client to which the decoder is added.

   tcp        0      0 192.168.60.122:9900         192.168.10.110:30637