polli-cosmos 0.3.3

Unified ingest + post-processing toolkit (COSM camera MP4 generation + general square crop)

Cosmos

Unified ingest + post‑processing toolkit

• cosmos: COSM camera MP4 generation (ingest) and orchestration
• squarecrop: general MP4 post‑processing (square crop)

Two CLIs, one SDK. TUI‑first UX with a stable programmatic API.

Install

• Production: pip install polli-cosmos
• Dev (uv):

  uv venv .venv
  . .venv/bin/activate
  uv pip install -e ".[dev]"
  

CLI quickstart

cosmos --help
cosmos ingest run --help
cosmos crop run --help
squarecrop --help

See docs/cosmos-cli.md and docs/squarecrop-cli.md for usage.

Local runs (uv + make)

1. Create venv and install dev deps

make uv-sync

2. Run ingest (example)

make run.ingest IN=/path/to/raw OUT=./out YES=1 WINDOW=10

3. Run squarecrop with a jobs JSON

make run.crop INPUT=/path/to/clip.mp4 OUT=_work/out JOBS=_work/job.json YES=1

4. Inspect provenance

make run.provenance DIR=_work/out

Jobs JSON fields for squarecrop:

• targets: [1536] or multiple sizes
• Offsets (recommended): offset_x, offset_y in [-1,1], relative to available margin (0=center; +right/down; −left/up)
• Alternative: center_x, center_y absolute [0..1] of full frame
• Optional trims: trim_unit: "time", trim_start, trim_end
• All jobs/targets run for each input; outputs include job/size markers in filenames for traceability.
• Provenance files now include width/height/duration/fps and stable clip/view ids usable by downstream tools.

IDs & provenance

• Clip IDs: clip-<stem>-<sha8>; View IDs: view-<stem>-<sha8> (content-hash based, deterministic).
• View provenance records offsets/centers, trim windows (seconds), target size, encoder used, and source clip id/sha.
• Video metadata (width_px/height_px/fps/duration_sec) is recorded in both clip and view artifacts; width/height are aliases for backward compatibility.

SDK quickstart

from pathlib import Path
from cosmos.sdk import ingest, IngestOptions

inputs = Path("/path/to/raw")
outputs = Path("./out")
opts = IngestOptions(quality_mode="balanced", width=3840, height=2160)
produced = ingest(inputs, outputs, manifest=None, options=opts)

Slim E2E (local, optional)

• Set COSMOS_ENABLE_LOCAL_TESTS=1
• Run all local tests: pytest -q tests/e2e_local
• Slim ingest reproduction (default): make e2e-repro-slim
  • 4K balanced, 10s window, bicubic scaler; writes {clip}.cmd.txt and {clip}.log.txt alongside outputs.
• Full 9.5k reproduction (very heavy): make e2e-repro-full (uses COSMOS_FULL_REPRO=1).
• Fixtures live under /Users/.../ladybird or dev/fixtures/cache (see dev/fixtures/README.md). CI skips these.

Dev workflow

• Format + lint: make fmt && make lint
• Type‑check: make typecheck
• Tests: make test

Encoder policy (cross‑platform)

• macOS: h264_videotoolbox > libx264 (use --prefer-hevc-hw on large inputs to try hevc_videotoolbox first)
• Linux: h264_nvenc > h264_qsv > h264_vaapi > libx264
• Windows: h264_nvenc > h264_qsv > h264_amf > libx264

Presets are centralized; filter graphs are CPU‑bound (crop/hstack/vstack/scale). Use --scale-filter and thread flags to tune throughput and memory. Detailed platform behavior and known limits are tracked in docs/encoder-behavior.md.