Video authentication
Video authentication is a process that is used to obtain the trustworthiness of a digital video and to assure a video hasn't been altered or tampered.
Performing Authentication Examinations of Imagery and Videos
Review visible scene content:
- Shadows
- Lighting
- Density
- Texture/Patterns (skin and background pattern)
- Gravity
- Physical body details (hair, muscles, body curves)
- Contact with other objects and body
- Skin to skin contact
- Imperfections on body
- Consistencies/Inconsistencies
| Visual scene content includes low-quality synthesized faces, visible splicing boundaries, color mismatch, visible parts of the original face, inconsistent synthesized face orientations. |
Review non-scene content:
- EXIF info (duration, GPS, software writer, codec)
- Comparing signatures of camera to video/image in question
- Behavior of file type (compression type)
- Reviewing binary structures and sequence of bytes in the hex of the file
- Evidence of being opened in a video editor
 |
| Viewing the EXIF data of a file |
 |
Using
structural analysis from the video forensic tool (link MEDEX forensics) showing a video editing tool was detected in the structure of the video file. |
Reference:
https://medexforensics.com/#applications-span
https://cognitech.com/
https://arxiv.org/pdf/2001.06564.pdf
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