This tab is designed for working with video files saved either manually or automatically.
You can save the files manually on the Playback tab. The files are saved automatically in the following cases:
a notification with the action Save a video as a file is triggered;
a device sends a file after detecting an event.
The video quality of the files depends on the device quality settings.
Particularities of storing video files:
- The limit on the size of the saved files of a unit is 5 GB. If it is reached, the older files are automatically deleted as soon as the new ones are saved. The files marked as important are not deleted in this case.
- The files older than the history period are automatically deleted.
- If a unit is deleted, deactivated, or video billing is disabled for it, its files are stored for another 30 days after that, and then deleted. This limitation doesn't apply to watching videos or live videos when the data is stored on third-party servers (for example, SmartWitness Gateway or CMSV6 Gateway) because Wialon stores only links to these files in this case.
Unit list
The work area contains a list of units for which cameras are configured. If the device type does not support the function of saving files, the unit is not available for selection and the icon 
is displayed next to its name.
Above the list, you can see a dynamic filter to quickly find units by name, as well as the following features:
| Icon | Action |
|---|---|
| Sort list items by name in forward or reverse alphabetical order. |
| Switch between the lists of units and their groups. To expand a group and see the units belonging to it, use the icon |
File list
The list contains all the saved files of the unit. If a file has been saved by means of a notification, its name is the same as that of the notification. If files have been saved manually, they are named Saved manually. If sent by the device automatically, they are named Detected by device or have a name generated by the device automatically.
File list management
Above the file list, there is a dynamic filter and the following icons:
| Icon | Function |
|---|---|
| Proceed to the bulk deletion of files. |
| Sort files by event date and time:
The date and time of the event are displayed under the file name. By default, the direct sorting order is used. |
| Select the filtering criterion. |
| Open the unit properties to configure its cameras. |
| Go back to the unit list. |
Storage
The bar Storage shows the total size of all the saved files. The size of each file is specified opposite its name.
Important
The bar Important shows the total size of files marked as important. The total size of important files can't exceed 1 GB. If a file is grouped with an important one, all the grouped file is considered as important.
To mark a file as important, point to its row and click on the icon 
.
The activated 
icon saves the file from being automatically deleted if the 5 GB storage limit is reached.
Monitoring and managing loading progress
Once file saving is started, you can monitor the loading progress and manage saved files in the file list.
To monitor and manage the loading progress in the file list, use the icons described below.
Loading
The loading 
icon indicates which files are being loaded. When loading is complete, the file size appears in the row.
Failed loading
The failed loading 
icon indicates that the video failed to load for at least one of the unit's cameras. An error message for the unsaved videos will appear in the player when you click the file row.
Click on the icon to view a tooltip with the number of unsaved files and possible actions.
For example, if 1 out of 4 video files haven’t been saved, you can click Retry to load the file again. Click Skip to leave only the 3 files that have been successfully saved and delete the rest.
Filtering files
You can filter files by the following criteria:
| Criterion | Description |
|---|---|
Date | Allows you to filter files by event date. Click on the criterion and select the required date in the calendar. You can also specify a time period within the selected date there. |
Notification type | Allows you to filter files by the type of the notification by means of which they have been saved, or by the tag selected when saving them manually. Click on the criterion and select the required notification type (tag). You can see only those notification types to which at least one of the saved files corresponds. The number of files corresponding to the notification type is shown in brackets next to it. |
Notification name | Allows you to filter files by the name of the notification by means of which they have been saved. Click on the criterion and select the required notification name. You can see the names of only those notifications to which at least one of the saved files corresponds. The number of files corresponding to the notification name is shown in brackets next to it. |
Saved manually | If you select this criterion, only the files saved manually are shown in the list. |
| Detected by device | If you select this criterion, the list displays only the files sent by the device automatically after a certain event. |
Watching files
To watch a video file, click on its name. The video is displayed in the right part of the window. When watching it, the following functions are available:
| Icon | Function |
|---|---|
| Play video. |
| Pause video. |
| Switch to full screen. You can open all files at once, or each one separately. To do this, click on this icon in the lower-right corner of the tab or file section, respectively. The icon is shown in the section when you point to it. |
| Exit the full-screen mode. You can use the Esc key instead. |
| Switch the sound on or off. The icon is displayed when you point to a section of an individual file. You can play the sound from only one file at a time. If a file is open in full screen mode, you can play the audio of only this file. If the icon |
| Show/Hide a section with a map which shows the unit moving along its track at the time the video was recorded. See more details in the Unit track on the map when watching playback section below. |
| Delete the file. |
| Download the file. If the file is saved only for one camera, the download starts after clicking on the icon You can also download the video file by clicking on its window with the right mouse button and selecting Save video as... |
and clear the selection of its camera. Select the camera to play the video excerpt simultaneously with the others.
If the internet connection is slow or unstable, video excerpts may not be played simultaneously.
Unit track on the map when watching video files
To open the map section, click on the icon 
in the upper-right corner of the tab.
After you select a file, the map shows the unit track for the period during which the video was recorded. If the unit hasn’t sent any messages with location data within this period, the track is not displayed.
When you play the video, the unit moves along the track. The unit position on the track changes according to the location data from the unit messages received during the time the video was recorded. When you point to the unit icon or a track point, the tooltip shows information from the message received at that place.
For other particularities of working with the map, not related to tracks or units, see the Live stream page.
Deleting files in bulk
To delete several files at once, follow the steps below.
- Select the unit the files of which you want to delete.
- Click on the icon
. - Select the files you want to delete or check the box above their list to select all at once.
- Click on the icon
.
A record of deleting the files is shown in the log.
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