Here’s a concise step‑by‑step to build the “multi‑parallel realities” video demo, plus tags for potential devs:
1) Scope and data: pick 3 scenarios and define them in a YAML (baseline, intervention A, intervention B) with filters/edits and any object add/remove.
2) Ingest: load video or live stream (OpenCV); optionally add a source adapter for Meta Ray‑Ban via the Meta Wearables Device Access Toolkit to pull camera frames to your mobile/host app.
3) Per‑frame processing: run detection/segmentation (e.g., SAM) and apply edits—style/lighting filters, object removal/insertion (inpainting), and simple trajectory constraints for motion deltas.
4) Parallelize: process the three scenario pipelines concurrently; keep a shared clock and frame index to maintain sync.
5) Metrics overlay: burn in per‑panel labels and stats (FPS, detected objects, path deltas, intervention flags).
6) Compose: tile the three outputs into a 3‑panel canvas and mux audio (baseline or muted) to MP4.
7) CLI and config: expose python
app.py --video input.mp4 --config scenarios.yaml --out out.mp4; include requirements.txt and example configs.
8) Validate: test short clips first, then longer videos; profile GPU/CPU, and add fallback paths if inpainting is slow.
9) Optional live mode: RTSP/webcam as default; if the Wearables Toolkit is present, enable a glasses source adapter; handle permissions and latency buffering.
10) Ship: provide a Replit template so others can fork, run, and tweak scenarios easily.
Potential devs to tag:
@amasad (Replit),
@OpenMMLab (vision tooling),
@HuggingFace (model hosting), @TencentARC (VideoPainter),
@learnopencv (CV tutorials),
@SiemensSoftware (digital twins), @NVIDIADesign (Omniverse).