Method

Frame rate match

Subtitle frame rate vs video frame rate

What we measure and how

For frame-based subtitle formats (EBU-STL, TTML with frameRate metadata), the declared frame rate is matched against the video's frame rate. A 25-fps subtitle on a 23.976-fps video will drift.

Provenance

Standards

EBU-STL · TTML 2 frameRate

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.

• · assets.timed_text.constraints.frame_rate_must_match_video

The full UMDP schema: /umdp.

Related methods

• Character count
• Cue gaps
• Line count
• Min cue duration
• Pkg subtitle dialogue coverage

Method identifier: frame_rate_match