Method

Timecode continuity

Packet PTS monotonicity + gap detection

What we measure and how

Packet PTS monotonicity is a basic data-integrity check on the elementary stream: the presentation-timestamp series for the primary video stream should walk forward in lockstep with the declared frame rate, with no gaps and no backwards steps. The check reads packet-level presentation timestamps across the full programme and flags any non-monotonic step (PTS regression) or any gap exceeding two frame intervals at the declared frame rate. Distinct from the fast-tier `start_timecode` check, which only reads the container-level start-TC tag.

Spec fields consulted

These Universal Media Delivery Profile paths resolve this check's thresholds against your spec snapshot at the moment the job was submitted.

• · structure.timeline.timecode_start

The full UMDP schema: /umdp.

Related methods

• Start timecode

Method identifier: timecode_continuity