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Glossary Forensics

Keyframe

A keyframe, or I-frame, is a video frame stored as a complete picture, while the frames between keyframes store only the changes.

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In more detail

Keyframes recur at a steady interval (the group of pictures), so an irregular pattern can show a video was edited and re-encoded. Because only keyframes decode on their own, forensic tools sample them to extract stills quickly.

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Video Forensics

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See also

  • Glossary Codec
    A codec (coder-decoder) is the method used to compress and decompress audio or video, such as H.264, H.265, AV1, AAC or MP3.
  • Glossary Frame rate
    Frame rate is how many video frames are shown per second (fps), such as 24, 25, 30 or 60.
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