---
title: HopChain v3.4 — multi-hop video QA viewer
emoji: "🎬"
colorFrom: blue
colorTo: purple
sdk: static
pinned: false
datasets:
  - ngqtrung/hopchain-v34-1080p
  - Choiszt/video_res
---

# HopChain v3.4 viewer

Browse the **7,900 verified multi-hop video questions** of
[`ngqtrung/hopchain-v34-1080p`](https://huggingface.co/datasets/ngqtrung/hopchain-v34-1080p):
pick a video, watch it, try each question, then reveal the integer answer and the per-hop rules.

- Answers are hidden by default so the page doubles as a human sanity-check.
- Videos are **not** stored in this Space — they stream directly from
  [`Choiszt/video_res`](https://huggingface.co/datasets/Choiszt/video_res) (`videos_1080p/`).
- See the dataset card for construction details, metrics (`blind_solver_rate` 0.133), and the
  mixed-oracle caveat.