| --- |
| license: apache-2.0 |
| language: |
| - en |
| --- |
| # FastvideoWorldModel-MC |
|
|
| This dataset contains short Minecraft (MineDojo) episodes. Each episode is a folder with a video and optional JSON action annotations. |
|
|
| ## File layout |
|
|
| ```text |
| <dataset_root>/ |
| episode_<timestamp_utc>_w<worker_id>_<episode_index>_<run_name>/ |
| manifest.json |
| video.mp4 |
| mg/ |
| mg_actions.json |
| data.npz # optional (advanced users) |
| ``` |
|
|
| ## `video.mp4` |
|
|
| - H.264 (libx264) |
| - FPS and resolution are recorded in `manifest.json` (`fps`, `image_size_hw` where `image_size_hw = [H, W]`) |
| - The video has **96 frames** |
|
|
| ## `mg/mg_actions.json` |
| |
| Per-frame action annotations (one entry per timestep). |
| |
| Format: |
| - Top-level: JSON object (dict) |
| - Keys: `"0"` ... `"T-1"` (string timestep) |
| - Value per timestep: |
| - `action`: `List[int]` (raw MineDojo MultiDiscrete action vector) |
| - `move_action`: `str` in `{ "", "W", "A", "S", "D", "WA", "WD", "SA", "SD" }` |
| - `view_action`: `str` in `{ "", "up", "down", "left", "right", "up_left", "up_right", "down_left", "down_right" }` |
|
|
| Notes: |
| - `view_action` is derived from the per-frame yaw/pitch delta. |
| - Convention: `dyaw > 0 => right`; `dpitch > 0 => down` (common Minecraft convention). |
|
|
| ## Advanced (Pro): `data.npz` (optional) |
|
|
| Some episodes also include `data.npz` (created with `numpy.savez_compressed`). It contains **per-frame aligned** numpy arrays. |
|
|
| Keys (all aligned to the video frames; typically `T = 96`): |
|
|
| - `actions`: `int64`, shape `(T, D)` |
| - raw MineDojo `MultiDiscrete` action vector per frame |
| - `D` matches `len(manifest["action_nvec"])` |
| - `positions`: `float32` (sometimes `float64`), shape `(T, 3)` |
| - Minecraft world position `(x, y, z)` |
| - `yaws`: `float32` (sometimes `float64`), shape `(T,)` |
| - camera yaw in **degrees** |
| - `pitches`: `float32` (sometimes `float64`), shape `(T,)` |
| - camera pitch in **degrees** |
|
|
| If you only need video + `mg_actions.json`, you can ignore `data.npz`. |
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|
