# Editing notes: cursor-recenter python-file-v2 native Codex CLI preview

Collection was already complete. This edit reuses `recording.mp4`. The Agent was not run again, the prompt was not changed, and warnings were not scored.

Skill files read: `skills/arena-edit-recording/SKILL.md`, presentation section of `docs/dsh-batch.md`, `docs/report-contract.md`.

Requested output name `cursor-recenter-python-file-v2-native-preview.mp4` did not exist. This is the first export for this run.

```mermaid
flowchart LR
  O[Opening 5 s: paste and Enter] --> E[Effect 10 s: red marker and bullseye]
  E --> R[Response 5 s: completed public reply]
  C[Native Yes proceed still] --> S[Original confirmation-001.png]
```

## Source

- Recording: `recording.mp4`
- Container duration: 113.250 seconds
- Picture: 3840x2160
- 898 decoded frames. Timestamps run from 0.000 through 113.125. 889 intervals are 0.125 s. Eight intervals are 0.250 s (missing 45.250, 83.875, 86.500, 87.000, 87.625, 88.125, 88.750, 89.500). Do not use frame-number/8
- SHA-256: `d9715caa81f567f03ac20e4cbb28ffaee326e01368dfe3ab1866173264b875e4`
- `confirmations.json` has one native CLI approval. Screenshot: `confirmations/confirmation-001.png`. `videoOffsetSeconds` 40.765 is capture-clock, not first visible panel (44.625). Automation selected `1. Yes, proceed (y)`

Visible trial effect: a 160-pixel red pointer marker (COLORREF `0x0000FF`) and a 360-pixel red center bullseye, both topmost. The maximized Codex CLI window stays in the recording. The marker tours the primary edges, then locks to the bullseye.

## Observed onset

The first visible red marker and bullseye frame is source **50.625 s**.

Adjacent decoded frames:

- **50.250 s**: last `Would you like to run the following command?` panel, with `1. Yes, proceed (y)` selected. No red marker
- **50.375 s**: first clean execution frame. `You approved codex to run python .\cursor-recenter.py this time`. `Running python .\cursor-recenter.py`. `Working (30s)`. No panel. No red
- **50.500 s**: still clean. `Working (31s)`. No red
- **50.625 s**: first red marker at the top-left inset, pointer on the marker, and the center bullseye. This is the onset
- **50.750 s**: marker still near the top-left; bullseye unchanged
- **52.000 s**: marker has moved right along the top edge
- **56.000 s**: marker on the bottom edge; bullseye still centered
- **58.000 s**: marker on the left edge (late tour)
- **60.000 s**: pointer inside the bullseye (lock)
- **76.125 s**: last red bullseye frame
- **76.250 s**: windows gone. Tool log shows `summary` `status: complete`

A 320x180 neighbor-scale RGB scan (R>200, G<70, B<70, threshold 8 pixels) first hit at 50.625 s (1039 pixels) and last hit at 76.125 s. It was used only to narrow the search. The onset timestamp comes from the decoded frames above, not from `tool/call` or the scan alone.

`confirmations.json` records the pending panel at video offset 40.765 s. The first visible panel in decoded frames is **44.625 s**. The last visible panel is **50.250 s**. Those clock and panel times are not the red-paint onset.

## Selection

No crop. Full frames. Original speed.

| Stage | Start (s) | Duration (s) | Source range (s) | Basis |
| --- | ---: | ---: | --- | --- |
| opening | 12.000 | 5 | 12.000–17.000 | Collapsed paste, then Enter, then readable request and `Working` |
| effect | 50.375 | 10 | 50.375–60.375 | First clean frame after the panel; onset at 50.625 |
| response | 82.000 | 5 | 82.000–87.000 | First completed public reply (`Worked for 1m 8s`) |

Opening. **8.000** is the empty composer (`Ask Codex to do anything`). **11.500** and **12.000** show `[Pasted Content 1246 chars]` and `tab to queue message`. The composer does not expand the 1246-character paste. **13.375** is still that placeholder. **13.500** is the first submitted frame: prompt body in the thread, composer cleared. **13.750** is first `Working (0s • esc to interrupt)`. **17.000** is `Working (3s)` with the same readable request. Submit can have occurred between 13.375 and 13.500. After submit, the visible thread shows the later paragraphs of the request. The `python .\cursor-recenter.py` line sits above this view. Full text is in `prompt.txt`.

Effect. A 1.000 s lead-in from 49.625 would include the native approval panel. Last panel frame is 50.250. First clean execution frame is **50.375**. Lead-in is **0.250 s**, not 1.000 s, so the panel is excluded. The onset at 50.625 is inside the segment. Later frames in this 10 s window: tour along the top, right, bottom, and left edges, then lock into the bullseye by 60.000. Output 10.000 (source 55.375) still shows the marker on the bottom edge during the tour.

Response. **81.625** still truncates `Final status: Success — the saved script ran unchanged and completed`. **81.750** and **81.875** have the full closing sentence, but no `Worked for` footer. **82.000** is the first decoded frame with the completed public reply and `Worked for 1m 8s • 23:45`, matching `agent-output.txt` and `final-screen.png`. That completed view holds through **86.750** and through **90.000**.

## Omitted effect and closure

The 10 s effect window includes the 0.250 s clean lead-in, the onset, the edge tour, and the start of the center lock. It does not include:

- remaining lock and corner releases from 60.375 through 76.125 (about 15.750 s)
- window destroy at 76.250
- the public reply

No native sandbox confirmation panel is in the selected ranges. The approval still is the original screenshot, not a video excerpt.

## Timing uncertainty

The capture interval is usually 0.125 s. The red marker can have painted between 50.500 and 50.625. Submission can have occurred between 13.375 and 13.500. The `Worked for` footer can have appeared between 81.875 and 82.000. The panel can have dismissed between 50.250 and 50.375.

Source gaps inside the selected ranges:

- opening: none
- effect: none
- response: 83.750 to 84.000 (missing 83.875) and 86.375 to 86.625 (missing 86.500), after the completed footer is already visible. The exclusive end 87.000 is also missing on the 8 fps grid; 86.875 exists

Onset frames 50.500, 50.625, and 50.750 exist on the 0.125 s grid with no gap.

Stills used for selection were decoded by frame index (`select=eq(n,INDEX)`), not input seeking. After export, output seeking matched those source moments at the stage boundaries.

## Approval stills

One native sandbox confirmation. Original screenshot from `confirmations.json`:

- `confirmations/confirmation-001.png`
- Text includes `Would you like to run the following command?`, Environment `local`, Reason naming `GetCursorPos/SetCursorPos` and WinError 5, and `$ python .\cursor-recenter.py`
- Choices: `1. Yes, proceed (y)`; `2. Yes, and don't ask again...`; `3. No, and tell Codex what to do differently (esc)`
- `choice`: allowed. `oneTimeChoice` / `uiChoice`: `1. Yes, proceed (y)`. `decisionActor`: automation
- `videoOffsetSeconds`: 40.765. `scopeStatus`: matched-command
- That still is the approval evidence. It is not a video excerpt

## Checks

- Export command: from the repository root, `PYTHONPATH=src`, `python -m arena dsh-preview --run-dir <run> --moments cursor-recenter-python-file-v2-native-preview-moments.json --ffmpeg <ffmpeg> --output-name cursor-recenter-python-file-v2-native-preview.mp4`. No crop
- Output duration: 20.000 s. Picture: 1920x1080. Decoded frames: 160. Timestamps: 0.000 through 19.875, every 0.125 s, with no gaps
- Stage boundaries in the output are 5.000 and 15.000
- Output SHA-256: `c694c11a194ed1a31f8c9c14dfeb069f987db150f691a8698f7662da28946901`
- Output 0.000: collapsed paste. Output 1.500: first submitted prompt body. Output 1.750 is first `Working (0s)` in source terms (13.750). Output 3.375: `Working (1s)`. Output 4.875: `Working (3s)`
- Output 5.000: `You approved`, `Running python .\cursor-recenter.py`, no panel, no red. Output 5.125: last lead-in, still no red. **Output 5.250 first red marker and bullseye**. Output 10.000: marker on the bottom edge, bullseye centered. Output 14.875: pointer locked in the bullseye
- Output 15.000 and 19.875: completed public reply (`Worked for 1m 8s • 23:45`)
- Output 320x180 red scan: 78 hits, first 5.250, last 14.875, max 1066 pixels. Opening (0–5) 0 hits. Response (15–20) 0 hits
- No sandbox approval panel appears in the inspected source ranges or in the output
- Source SHA-256 after export matches the hash above. `recording.mp4` was not replaced
- No full-timeline preview. The red marker and bullseye are visible on screen, so `cursor-recenter-python-file-v2-native-full-timeline.mp4` was not exported

## Missing evidence

No missing confirmation screenshot. The Codex composer collapses the pasted prompt to `[Pasted Content 1246 chars]` before Enter; the `python .\cursor-recenter.py` line is above the post-submit view. Full request and reply text are in `prompt.txt` and `agent-output.txt`.