# Track: Video Analysis — Probability Theory is an Extension of Logic

**Status:** Not started (umbrella published 2026-06-21)
**Type:** Research-only child track (Pass 1 of 3)
**Owner:** Tier 2 Tech Lead (execution)
**Cluster:** A (Math & information-theoretic foundations)

> **Parent:** This is child #2 of the [video_analysis_campaign_20260621](../../video_analysis_campaign_20260621/) umbrella. See [umbrella spec.md](../../video_analysis_campaign_20260621/spec.md) for the full design and multi-pass context.

---

## 1. Video

| Field | Value |
|---|---|
| **Title** | Probability Theory is an Extension of Logic |
| **Author** | (unknown — verify during execution) |
| **URL** | https://youtu.be/0yF9TvMeAzM |
| **Cluster** | A (Math & information-theoretic foundations) |
| **Slug** | `probability_logic` |
| **Execution order** | #2 of 12 (pure math/logic; builds on CS229's ML setup) |

---

## 2. Deliverables

| Artifact | Path | Target |
|---|---|---|
| Transcript (timestamped + plain) | `artifacts/transcript.json` | All segments |
| Download log | `artifacts/download.log` | yt-dlp output |
| Extracted unique frames | `artifacts/frames/*.jpg` | 50-500 frames |
| Extraction metadata | `artifacts/extraction_meta.json` | Frame paths + hashes + timestamps |
| OCR results | `artifacts/ocr.md` | Full OCR text per frame |
| Deep-dive report | `report.md` | **1000-10000 LOC markdown** |
| Quick summary | `summary.md` | 200-400 words |

---

## 3. Pipeline (5 phases)

- [ ] **Phase 1: Acquire.** `extract_transcript.py` + `download_video.py`.
- [ ] **Phase 2: Keyframes.** `extract_keyframes.py` with threshold 0.4.
- [ ] **Phase 3: OCR.** `ocr_frames.py`.
- [ ] **Phase 4: Synthesis.** Tier 3 worker: transcript + OCR + frames → `report.md` (1000-10000 LOC).
- [ ] **Phase 5: Verification.** Idempotency + audit + end-of-track report.

---

## 4. Report structure (8 sections)

Per umbrella spec §FR6.

```
# Probability Theory is an Extension of Logic
**Source:** https://youtu.be/0yF9TvMeAzM
**Author:** <verify>
**Date Added to Campaign:** 2026-06-21
**Cluster:** A
**Slug:** probability_logic

## 1. TL;DR
## 2. Key Concepts
## 3. Frame Analysis
## 4. Transcript Highlights
## 5. Mathematical / Theoretical Content  ← likely dominant
## 6. Connections to Other Videos
## 7. Open Questions
## 8. References
```

---

## 5. Connections

- **Forward to:** `entropy_epiplexity` (info-theoretic framing), `score_dynamics_giorgini` (uses probability), `cs336_architectures` (transformer attention uses probability).
- **Backward from:** `cs229_building_llms` (sets canonical ML vocabulary).
- **Likely rich cross-references:** `entropy_epiplexity` (most direct — both about extending logic/math).

---

## 6. Verification

- [ ] All 7 deliverables present
- [ ] `report.md` 1000-10000 LOC
- [ ] All 8 sections populated
- [ ] Tests pass

---

## 7. See also

- [Umbrella spec.md](../../video_analysis_campaign_20260621/spec.md)
- [Umbrella README.md](../../video_analysis_campaign_20260621/README.md)
