Step 1 Select channel number, bit stream type, start time, end time.
Step 2 Click Download by time button.
Enter download by time interface is shown as in Figure 5-185.
Step 3 Select record format, and file save path. Click OK button.
Device displays file download process and begins download. Device pops up
corresponding dialogue box.
Figure 5-185
5.8.8.3 Watermark
It is to check the downloaded file has been tampered with or not.
Note
Before the operation, make sure you have gone to Setup->Camera->Encode->Video to
enable watermark function and have set the corresponding watermark string.
Watermark interface is shown as In Figure 5-186. Please select a file and then click Verify
button to see the file has been tampered with or not
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