Private
Public Access
conductor(cs229): Phase 5 Verification - end-of-track report + state.toml completed
This commit is contained in:
@@ -0,0 +1,154 @@
|
||||
# Track Completion: video_analysis_cs229_building_llms_20260621
|
||||
|
||||
**Track:** `video_analysis_cs229_building_llms_20260621`
|
||||
**Type:** Per-child research track (Pass 1 of 3) — child #1 of 12 in `video_analysis_campaign_20260621`
|
||||
**Status:** SHIPPED
|
||||
**Tier:** 2 Tech Lead (per-child dispatch)
|
||||
**Ship date:** 2026-06-21
|
||||
|
||||
## Summary
|
||||
|
||||
First child of the video_analysis_campaign_20260621 umbrella shipped. All 5 phases of the pipeline executed successfully: Acquire → Keyframes → OCR → Synthesis → Verification.
|
||||
|
||||
## Phase Results
|
||||
|
||||
### Phase 0: yt-dlp access verification (R5 mitigation)
|
||||
|
||||
yt-dlp successfully accessed the video (`9vM4p9NN0Ts`) despite the oEmbed 401 error that flagged this video as a risk. Phase 0 verified before downloading.
|
||||
|
||||
### Phase 1: Acquire
|
||||
|
||||
- **Transcript**: youtube-transcript-api failed with XML parse error on empty response (likely YouTube API restriction specific to this video). Fallback to yt-dlp's `--write-auto-subs --sub-langs en --sub-format vtt` succeeded: **5397 segments recovered**, ~58k words before dedup, ~19k words after VTT overlap deduplication.
|
||||
- **Video**: yt-dlp downloaded 336MB mp4 (gitignored per FR8).
|
||||
- **Log**: video.log confirms yt-dlp success (returncode 0, format `bestvideo[ext=mp4]/best`).
|
||||
|
||||
**R5 mitigation worked**: Despite oEmbed 401 and youtube-transcript-api failure, yt-dlp's broader access patterns recovered all needed artifacts.
|
||||
|
||||
### Phase 2: Keyframes
|
||||
|
||||
ffmpeg scene detection (threshold 0.4) extracted 147 candidate frames. imagehash phash + hamming-distance-5 dedup kept **115 unique frames** (32 duplicates removed). All frames under 500KB so committed to git (13.13MB total). Manual review not yet done — flag any Stanford lower-third-only frames for later filtering.
|
||||
|
||||
### Phase 3: OCR
|
||||
|
||||
winsdk OCR processed all 115 frames in 5.1 seconds (0.04s/frame). Output: 28KB markdown with one section per frame.
|
||||
|
||||
### Phase 4: Synthesis
|
||||
|
||||
Deep-dive report written directly by Tier 2 (this agent) with full context. Spawning Tier 3 for a 1000-10000 LOC research synthesis would burn excessive tokens without adding domain expertise.
|
||||
|
||||
- **report.md**: 1,157 lines, 100KB (within 1000-10000 LOC target)
|
||||
- **summary.md**: 364 words (within 200-400 word target)
|
||||
- **transcript_clean.txt**: 100KB cleaned text (VTT tags stripped, triplicated overlaps deduplicated)
|
||||
|
||||
### Phase 5: Verification
|
||||
|
||||
All checks pass:
|
||||
|
||||
- [x] All 7 deliverable artifacts present: transcript.json, video.log, frames/, extraction_meta.json, ocr.md, report.md, summary.md
|
||||
- [x] report.md is 1,157 lines (within 1000-10000 target)
|
||||
- [x] summary.md is 364 words (within 200-400 target)
|
||||
- [x] All 8 report sections populated (no TBDs in report)
|
||||
- [x] Per-task commits with git notes (5 commits total)
|
||||
- [x] video.mp4 properly gitignored
|
||||
- [x] frames committed (all <500KB)
|
||||
- [x] 11 child tracks remaining (cs229 was #1 of 12)
|
||||
- [x] Synthesis track still pending (blocked by all 12 children)
|
||||
|
||||
## Files Modified / Created
|
||||
|
||||
**Created (artifacts):**
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/artifacts/transcript.json` (5397 segments)
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/artifacts/transcript_clean.txt` (deduplicated)
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/artifacts/video.log` (yt-dlp success log)
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/artifacts/9vM4p9NN0Ts.en.vtt` (raw VTT, gitignored)
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/artifacts/ocr.md` (115 frames OCR'd)
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/artifacts/frames/*.jpg` (115 frames)
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/artifacts/frames/extraction_meta.json`
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/report.md` (1,157 lines)
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/summary.md` (364 words)
|
||||
- `conductor/tracks/video_analysis_cs229_building_llms_20260621/report_appendix_mno.md` (helper for combining)
|
||||
|
||||
**Modified:**
|
||||
- `.gitignore` (added `conductor/tracks/video_analysis_*/artifacts/*.mp4`, `*.vtt`)
|
||||
- `scripts/video_analysis/extract_transcript.py` (fix API: use `get_transcript` not `fetch`)
|
||||
|
||||
**Throw-away (Tier 2 sandbox archival):**
|
||||
- `scripts/tier2/artifacts/video_analysis_campaign_20260621/phase1_acquire_cs229.py`
|
||||
- `scripts/tier2/artifacts/video_analysis_campaign_20260621/phase2_keyframes_cs229.py`
|
||||
- `scripts/tier2/artifacts/video_analysis_campaign_20260621/phase3_ocr_cs229.py`
|
||||
|
||||
## Commits in this dispatch
|
||||
|
||||
| SHA | Message |
|
||||
|---|---|
|
||||
| `1c05305a` | Phase 0 deps (combined with t0_1-t0_3) |
|
||||
| `12fcc55c` | Phase 0.4 scaffold |
|
||||
| `94f4a4ee` | Phase 1.1 extract_transcript |
|
||||
| `45a5e814` | Phase 1.2 download_video |
|
||||
| `9ccdedee` | Phase 1.3 extract_keyframes |
|
||||
| `ed0d198a` | Phase 1.4 ocr_frames |
|
||||
| `548c4fef` | Phase 1.5 synthesize_report |
|
||||
| `c1a15c45` | Phase 2 init (12 child + 1 synthesis scaffolds) |
|
||||
| `365fa554` | state.toml: Phase 0+1+2 init complete |
|
||||
| `ebadfda9` | Interim TRACK_COMPLETION report |
|
||||
| `46a22456` | plan.md checkboxes |
|
||||
| `0bc8abbe` | Phase 1 cs229 Acquire (transcript + video) |
|
||||
| `91a96ce1` | Phase 2 cs229 Keyframes (115 frames) |
|
||||
| `c4686787` | Phase 3 cs229 OCR (28KB markdown) |
|
||||
| `1872b66f` | Phase 4 cs229 Synthesis (report + summary) |
|
||||
|
||||
15 commits total in this branch (since `master` was reset to merged state).
|
||||
|
||||
## Key Risks Encountered
|
||||
|
||||
### R5 (E-cluster videos oEmbed 401) — RESOLVED
|
||||
|
||||
This video was flagged with R5 because oEmbed returned 401. Verified yt-dlp access in Phase 0 worked. youtube-transcript-api still failed (XML parse error on empty response), but yt-dlp's `--write-auto-subs` recovered 5397 segments. **R5 mitigated for cs229**.
|
||||
|
||||
The same R5 risk applies to `video_analysis_cs336_architectures_20260621` (the other E-cluster child). Recommend the same Phase 0 yt-dlp verification + transcript fallback strategy.
|
||||
|
||||
### R7 (Pass 1 over-summarization) — MITIGATED
|
||||
|
||||
Report is 1,157 lines with extensive verbatim transcript quotes, OCR preservation, math derivations, and cross-references. Pass 2 has full raw material.
|
||||
|
||||
### R9 (Transcript API rate-limiting) — NOT ENCOUNTERED
|
||||
|
||||
The error was API restriction, not rate-limiting. Retry-with-backoff in `extract_transcript.py` would help with rate-limiting on other videos if encountered.
|
||||
|
||||
## Architecture Notes
|
||||
|
||||
- **scripts/ namespace**: All scripts in `scripts/video_analysis/` (per AGENTS.md namespace convention). Drivers in `scripts/tier2/artifacts/video_analysis_campaign_20260621/` (Tier 2 sandbox archival convention).
|
||||
- **Result[T] pattern**: All 5 scripts use the data-oriented `Result[T, ErrorInfo]` pattern.
|
||||
- **No src/ changes**: Research-only child. No `src/*.py` files were modified.
|
||||
- **Git hygiene**: Atomic per-phase commits with git notes summarizing each phase.
|
||||
|
||||
## Pass 2/3 Handoff
|
||||
|
||||
This child track's artifacts feed:
|
||||
|
||||
- **Pass 2 (de-obfuscation via user's math encoding notation)** — Needs user to rediscover their "compress/decompress math info" encoding before starting. The report's math notation in §5 + Appendix F can be re-encoded.
|
||||
- **Pass 3 (projection to applied domain)** — The 6-pillar framework in §1 + §2 maps to Tier 1/Tier 2/Tier 3/Tier 4 of the manual_slop MMA system. The KV-cache in §5.11 maps to Forth register-stack analogy. The model souping in §5.12 maps to source-less programming.
|
||||
|
||||
## Next Steps
|
||||
|
||||
11 child tracks remaining in the campaign:
|
||||
- probability_logic (A)
|
||||
- entropy_epiplexity (A)
|
||||
- score_dynamics_giorgini (A)
|
||||
- platonic_intelligence_kumar (B)
|
||||
- free_lunches_levin (B)
|
||||
- generic_systems_fields (C)
|
||||
- brain_counterintuitive (C)
|
||||
- neural_dynamics_miller (C)
|
||||
- multiscale_hoffman (C)
|
||||
- cs336_architectures (E — same R5 risk as cs229)
|
||||
- creikey_dl_cv (D)
|
||||
|
||||
Plus 1 synthesis track after all children ship.
|
||||
|
||||
User dispatches next via:
|
||||
```
|
||||
/tier-2-auto-execute video_analysis_probability_logic_20260621 --resume
|
||||
```
|
||||
|
||||
(Each child can be dispatched independently and in any order, though the umbrella's spec recommends the §6 execution order.)
|
||||
Reference in New Issue
Block a user