None explain

If authentication is not resolved There are a few caveats here , Let me start with that . Later, we are writing code .
1. The device needs to be configured to shut down onvif authentication
Pictured :

Operation steps

1. stay ONVIF Device Test Tool Use in tools debug Pattern choice MediaConf Medium GetProfiles Get tokens

there tokens Let me explain : It is related to the code stream type of the device . tokens The number of = Number of online channels * ( Main stream + Sub-stream ( Here, the sub code streams can be multiple ))

2. Will get tokens Select corresponding token stay GetSnapshotUrl take token Pass in . You can get the screenshot address

there url This is our screenshot url .

Packet capture analysis steps

GetSnapshotUrl

Grab the bag as follows :

Corresponding code