git:20261008.12b8fee to git:20261015.07749c7

- description: Learn a creator's or channel's editing style by measurement — cut pacing and rhythm, shot sizes, hook, on-screen text, colour (black/white point, saturation, split-tone tint), sound (music under voice, SFX on cuts, silences), speaking rate — from reference videos or the creator's own channel, check the numbers on frames, write a profile with tolerances and a learn / don't-take note per reference, then turn it into a project memo, a saved BashCut library look and text presets, and rules for the other skills, without copying their text, music or graphics. Use when the user shares reference videos or a channel and says "học style", "phân tích kênh", "làm giống kênh X", "dựng theo phong cách này", "phân tích video của tôi", "kênh của tôi".

- Reply in the user's language. The workflow is **measure → look at frames → profile with tolerances →

- differences**. BashCut measures (no ffmpeg, no scripts); the numbers in the profile come from the references, never

- from this skill. Sources are cited as (T15 §n) = style-reference study, (T01) = ideation, (T07) = pacing.

- Work from videos the user provides, or find and download references yourself (for example with `yt-dlp`)

- without asking; rights are the user's to handle. Keep downloaded references in a private folder outside any project

- How many (T15 §3, T01 §3): one video is enough to mimic that one clip; a channel style needs several, and the

- sources disagree (5–15 in one study, 10–30 in another). Label the profile's confidence by sample count: under 10

- low, 10–15 medium, above 15 higher (T01 §3, §7). Say the tier next to every number.

- Keep references in a separate study project, never the one you will publish:

-

- ```sh

- bashcut project create --name "Study - Channel X" --canvas portrait

- bashcut media import /abs/refs/ref01.mp4 --base-rev N # one file per call

- bashcut media analyze # job: cuts, picture, sound levels per file

- bashcut media transcribe # job: words per file (needs captions.transcribe)

- ```

- | Rhythm | `bashcut review shots --media REF --summary` | mean, median, cv, mode (bin and share), cuts per minute; cuts per 10 s and the shot-length histogram from `media analysis --media REF` |

- | Shot sizes, moves | `media describe` the shots you looked at (`bc:footage-survey`), then `review shots --media REF --summary` again | shares of each size, move, direction; runs of the same size and move (count them from the shots) |

- | Hook and close | `bashcut media frames --sheet --media REF --from 0 --to 3 --count 6`; `media transcript --media REF --as words --to 5` | first cut, first words (`firstSpeech`), first text on screen, the last seconds |

- | Speech | `bashcut speech rate --media REF`; `media speech-map --media REF` | rate p10/p50/p90 (syllables for Vietnamese), pauses (`gapStats`), speech share |

- | Sound | `bashcut audio measure --media REF --curve` (job) | integrated LUFS, LRA, true peak; short-term level during words vs in the speech-map gaps |

- | Colour | place the references on the study timeline (`media place`), then `bashcut color measure --by clip` | black, white, mid, saturation, tint per band (shadows, mids, highlights), per reference |

- | Text | `bashcut media ocr --media REF --step 0.5` (job; built-in `vision.text`), then contact sheets | share of seconds with text, where it sits (box y), line height as a share of the frame, words per card, how long a card holds; case and preset look by eye |

- | Faces | `bashcut media subjects --media REF --step 1` (job; built-in `vision.faces`) | share of seconds with a face, face height (box height: a size proxy), where the face sits (box x, y) |

- A reference's sound is one mixed track: music under voice is read from the level in the gaps against the level

- under words, not as separate stems. `audio mix-measure` splits speech, music and SFX only on our own timeline.

- in a dark scene can score very low (T15 §2). Look at the cuts: `media frames --sheet --media REF --every 1`

- for structure, `bashcut media strip --media REF --from S --to S2` around a suspect cut, `media analysis --media

- REF --min-score X` for weaker candidates; fix the list with `bashcut media cuts --media REF --add S --remove S2`.

- Shots and statistics follow the corrections.

- - Open the 3–5 longest shots and the opening on frames before writing anything about them.

- - OCR and face boxes are raw: a logo, a sign or a reflection reads as text, a poster as a face. Check boxes

- against `media frame` at the reported `frame` before counting them; which text is a caption is yours to decide.

- Per facet, write the median and p25–p75 across the references (not only a mean), with n, the files and the date

- (T15 §3, §4). Then the tolerance:

- - ±20–40 % for shot length, cut rate and duration, framed as a **preference**, not a gate (T15 §3). The sources

- contradict: one treats ±30 % as a must, another as ×0.7–1.3 "a preference, not a hard rule". Tighten when the user

- says "exactly like X"; widen when our footage has less coverage than the reference or the length differs a lot.

- When the references are the creator's own videos, their own history is the benchmark, not genre averages (T01 §2,

- §4). If the user gives view counts, rank each video by its **multiple over the channel's own median**, which needs at

- least 4 videos (T01 §2, §3); report the multiple and let the creator judge (one source flags 1.5–3×, T01 §3). The

- multiple says a video did well, not why: compare the measured profile of the outliers with the rest and say it is a

- pattern to test, with its confidence tier. Without view counts, the profile is simply "how you edit now".

- where the hold is) and what not to take (T01 §2, T15 §2).

- - After the cut, measure ours with the same functions: `bashcut review shots --summary` against the reference's

- `review shots --media REF --summary`, `bashcut color measure --graded` against the reference clips, `bashcut

- audio mix-measure` against the reference's gap and word levels. Compare pictures with

- `bashcut media frames --reference REF --media OURS --count 6` (REF row above OURS, cell for cell; OURS is a

- source clip or an imported draft export). Then check the differences list: still there?

- `bashcut library list --pack "Channel X"` first: the style may have been studied before.

- source file and date), the learn / don't-take notes, the differences list and 5–10 rules, each with the number

- behind it.

- 2. **Look**: start from the closest look in `bc:color-grade`, move its params toward the measured values, preview,

- import the LUT and grade an adjustment with it; save the look in step 3. The whole style is that look plus

- one `patchItems` caption restyle (`bc:captions-text`).

- 3. **Library pack**: build each piece once on the timeline, then `bashcut library save-selection --kind look --name

- "Channel X look" --item ADJUSTMENT --pack "Channel X"` (also `text-preset` for its captions and titles,

- `transition-preset` and `effect-preset` for its signature moves, `audio` for SFX you have the rights to). Add

- `--scope user` for every project; it waits for the user's approval.

- `maxShotSeconds`, caption limits) from the profile's range (`bc:captions-text`, `bc:beat-cut`).

- 5. **Rules for skills**: if a finding is general (true beyond this channel), propose it as a change to this kit

- with `bc:self-learn`.

- Tell the user which rules matter most, with the numbers, n and confidence behind them, and the differences you

- will keep.