Presentation Timestamp (PTS)
Definition
A value stored in the container for each packet indicating when that frame should be displayed. In an unmodified recording, PTS values increase monotonically at the camera's frame rate. A deleted frame leaves a gap; an inserted frame disrupts the expected interval.
Related terms
- Group of Pictures (GOP)
- The periodic structure of I-frames, P-frames, and B-frames in a compressed video stream. Each encoding generation imposes its own GOP structure. When...
- I-frame (intra-coded frame)
- A video frame that is encoded entirely from its own pixel data, without reference to any other frame. I-frames mark the start...
- Inter-frame residual
- The pixel-level difference between a predicted frame and the actual frame after decoding. In unmodified video, residuals at scene cuts are elevated...
- Motion vector consistency
- In unmodified video, motion vectors across consecutive frames track the same objects and follow smooth trajectories. A deleted or inserted frame breaks...
- P-frame (predictive frame)
- A frame encoded as a set of changes relative to a preceding reference frame. P-frames are smaller than I-frames because they only...
Explained in
- Detecting Frame Deletion and Insertion in VideoA value stored in the container for each packet indicating when that frame should be displayed. In an unmodified recording, PTS values increase monotonically a...