Watermark Detecting
If the watermarked video is leaked and distributed illegally, you can request the watermark detection by sending the video via PallyCon Helpdesk. (Attach a large file transfer service or a cloud storage link to the ticket. A Google Drive link is recommended.)
Watermark detection analyzes each frame of the video to detect the original watermark pattern and decrypts the data with the secret key used at the time of insertion. If the watermark payload is found through the detection process, the session database finds the session information whose key value is the payload and reports it as the detection result.
sequenceDiagram
participant A as Service site
participant B as PallyCon service
A ->> B: Suspicious content
Note right of B: Detect watermark (payload)
B -->> B: Analyze video frames
opt Watermark detected
Note right of B: Session database
B -->> B: Find session data
end
B ->> A: Report detection result
The detailed requirements for watermark detection are as follows:
| Item | Description |
|---|---|
| Minimum video length | In order to detect watermarks, continuous recorded video without repeating sections with a length of at least 5 minutes is required |
| Video quality | At least 480p with 1Mbps is required for detection. 720p or higher quality recommended |
| Video stability | Requires fixed recorded video without shaking. Undetectable if the screen is shaken due to shooting with a handheld camera or smartphone |
| Buffering or freezing | There must be a section that was played normally without buffering or screen freezing for at least 5 minutes |
Please contact us for detailed information on watermark detection such as monitoring service.