Chapter Detection

Metrics

Scoring Model

Four-Dimensional Editorial Score

Each chapter receives a composite editorial score calculated from four weighted dimensions. These weights are tuned for documentary/interview-style content — the primary footage type in the current library.

Dialogue density is weighted highest because the source material is a read-through performance where spoken content is the primary editorial signal. Pacing captures rhythm and beat structure. Content and technical scores evaluate semantic richness and production quality respectively.

Score Distribution

Chapter Quality Spread

The right-skewed distribution is expected — most footage is competent but few chapters hit all four dimensions simultaneously. The top-scored chapters (7.0+) are the best candidates for automated rough cut assembly.

Thumbnail Extraction

Visual Index

Each chapter gets an auto-extracted thumbnail at its temporal midpoint via FFmpeg. These 27 PNG thumbnails serve as the visual index for the catalogue browser and chapter navigator tools.

Chapter Thumbnails

Visual Index — 27 Chapters

Each thumbnail auto-extracted at chapter midpoint via FFmpeg. Scores shown are composite editorial scores across four dimensions.

Chapter 1

Score: 5.9

Chapter 2

Score: 5.3

Chapter 3

Score: 4.6

Chapter 4

Score: 5.6

Chapter 5

Score: 4.8

Chapter 6

Score: 4.7

Chapter 7

Score: 4.6

Chapter 8

Score: 6.2

Chapter 9

Score: 4.6

Chapter 10

Score: 4.9

Chapter 11

Score: 3.3

Chapter 12

Score: 5.7

Chapter 13

Score: 5.0

Chapter 14

Score: 5.4

Chapter 15

Score: 5.2

Chapter 16

Score: 6.3

Chapter 17

Score: 4.7

Chapter 18

Score: 5.5

Chapter 19

Score: 3.8

Chapter 20

Score: 4.8

Chapter 21

Score: 4.1

Chapter 22

Score: 5.2

Chapter 23

Score: 5.0

Chapter 24

Score: 3.3

Chapter 25

Score: 4.7

Chapter 26

Score: 5.3

Chapter 27

Score: 4.8

Related