Case studies

What a run finds and fixes, shot by shot

Worked examples of what comes back. Each one shows the video, the score, the shot that broke and the fix written for it. The last one is a real run where the broken shot got regenerated.

The first 3 videos and their frames are re-creations made for this page. Their scores use the exact arithmetic a real run uses: a serious break counts three, a garment or a moved prop two, and light one, and that total is measured against the number of shots and taken off 1.00. Case study 04 is a real test video, with its real report and the real fix.

Runs
4
Shots read
65
Problems found
7
Shots fixed
1

01Case study

Interview-style monologue, one room, generated shot by shot

Score

0.94

A woman talking in an armchair in a book-lined room. In the closer shot her hair is parted on the other side and shorter.Shot 03 · 0:09Shot 17 · 1:22
0:0024 shots2:10
Length
2 min 10 s
Read
24 shots
Where
1:22 to 1:43, shot 17

What it found

Hair changed between the wide shot and the closer shot of her. Nothing in the scene explains it. Rated high, since hair is part of how a face reads.

Evidence

The first clear look at her is shot 3. Held next to shot 17, the parting is on the other side and the length is different.

Fix

Regenerate shot 17 with the hair from shot 3 as the reference. Keep the room, the light and the framing as they are.

02Case study

Short story piece, three locations, character walks between them

Score

1.00

The same man in a mustard jacket leaving a flat, walking a rainy street and entering a bookshop, matching in every frameFlat · 0:04Street · 0:38Shop · 1:12
No marks
0:0021 shots1:34
Length
1 min 34 s
Read
21 shots
Where
No marks on the timeline

What it found

Nothing broke. Four people, two rooms and a street were tracked all the way through and every later shot matched its first appearance.

Evidence

All 21 shots still come with their review: place, light, weather, camera and six to ten checks each, marked as set, still matching or out of view. Scrub through and you see the working instead of taking the score on trust.

Fix

Nothing to change. This is what a clean run looks like.

03Case study

Music-video style cut, same table dressed for every shot

Score

0.85

A woman at a low table in a music video. Later the light turns green, her leather jacket is denim and the record has moved across the table.Shot 02 · 0:06Shot 09 · 0:41
0:0014 shots1:08
Length
1 min 08 s
Read
14 shots
Where
0:26, 0:41 and 1:01

What it found

A record on the table moved between cuts, the room got noticeably cooler and greener halfway through, and one jacket came back a different jacket.

Evidence

Three problems, three pairs of frames. They came from different reads: the room read caught the record moving, the people read caught the jacket.

Fix

Three fixes, one per problem. Put the record back where it sits in shot 2. Bring the second half's light back to the warm white of the opening. Rebuild the jacket shot from the first clear look at her, in the leather jacket.

04Case study · a real run

A test video with three planted breaks, found and then fixed

Score

0.83

  1. Shot 1: a red figure stands by a window in a room with a dark blue wall, a yellow box on the floor to the left

    Shot 1 · 0:00

    Reference

  2. Shot 2: a yellow graphic insert on a dark background

    Shot 2 · 0:04

    Insert, allowed

  3. Shot 3: back in the blue room, figure and box where they were

    Shot 3 · 0:08

    Holds

  4. Shot 4: the red figure outdoors on a green lawn under a blue sky

    Shot 4 · 0:12

    New place, allowed

  5. Shot 5: the figure now stands on the left and the box sits on the right

    Shot 5 · 0:16

    Swapped sides

  6. Shot 6: the wall behind the figure has turned brown

    Shot 6 · 0:20

    Wall turned brown

Length
24 s
Read
6 shots
Where
0:16 and 0:20, shots 5 and 6
Fixed
Shot 6, first draft
The whole run, step by step

What it found

All three planted breaks and nothing else. In shot 5 the figure and the box swapped sides of the room. In shot 6 the wall turned from dark blue to brown. The insert and the shot out on the lawn are different places, so it left them alone.

What the fix did

I pressed Fix this shot on the wall. The first draft put the blue back and left the figure, the box and the window where they were, and the automatic check agreed. The swap was harder. Two tries redrew shot 5 and kept the figure and the box on the wrong sides, so that one stays a written fix to regenerate by hand.

Fix · Shot 6 · from the report

Shot 6, 0:20.0 to 0:24.0. The upper wall of the room is colored dark brown instead of the dark blue established in Shot 1. Match it back to shot 1 at 0:00.5, using that frame as the reference. Everything else in the shot stays as it is.

Shot 6 · 0:20 · As generated
Fixed · Full quality
The reference frame from shot 1 at 0:00.5: dark blue wall, red figure on the right by the window, yellow box on the left

Reference · Shot 1 · 0:00.5The frame the fix was told to match.

Shot 6 as generated, and after one fix. The wall is blue again and nothing else moved.

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