docs(hy_worldplay): add HY-WorldPlay WAN-5B I2V model card

[wenqingw-nv]

Adds the HY-WorldPlay WAN-5B I2V model card under docs/source/models/, following the LingBot-World card format. Videos are generated from HY-worldplay's provided images.

Contents

• docs/source/models/hy_worldplay.rst — overview, requirements, install, run commands, hero + sample-video grid, profiling benchmark, citation.
• docs/source/models/index.rst — adds HY-WorldPlay to the model list.
• docs/source/index.rst — adds HY-WorldPlay to the Models nav toctree (so the card shows in the sidebar).
• docs/source/_static/performance/hy_worldplay/perf-0530.md — benchmark data for the profiling chart.

Sample videos

Native 8-chunk rollouts (num_chunk=8, pose=w-31, seed 0) for assets/img/{1,2,4,8,9}:

• Hero (top): img-1
• Grid: img 2, 4, 8, 9 (each labeled with its prompt)

Note: the <source> URLs point at research.nvidia.com/.../assets/hy_worldplay/hy-worldplay-wan-i2v-5b-{1,2,4,8,9}.mp4. The mp4s still need uploading to that CDN before the players render — files are staged locally (/tmp/hy_card_videos/).

---

Update — videos regenerated with the VAE checkerboard fix (#338). The original sample videos had a ~2px VAE-decode checkerboard (flashdreams Wan 2.2 VAE patchify channel-order bug). Fixed in #338; the 5 sample mp4s (img 1, 2, 4, 8, 9) were regenerated 8-chunk with that fix and need re-uploading to the research.nvidia.com/.../assets/hy_worldplay/ CDN. Card RST is unchanged (same <source> URLs).

[copy-pr-bot]

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[greptile-apps]

Greptile Summary

Adds the HY-WorldPlay WAN-5B I2V model card to the FlashDreams docs, following the LingBot-World card format and wiring it into both toctree indexes.

• hy_worldplay.rst covers installation, the flashdreams-run invocation with distilled-checkpoint and pose flags, a four-video sample grid, and a single-device GB300 profiling benchmark vs. the official implementation.
• perf-0530.md supplies the benchmark table (official: 1578 ms, FlashDreams: 1015 ms) consumed by the existing benchmark_chart.js widget.
• Both index.rst files are updated to list HY-WorldPlay after LingBot-World, keeping the two nav trees in sync.

Confidence Score: 5/5

Docs-only change adding a new model card; no code paths are affected.

All four files are purely documentation. The new card is self-contained — the benchmark data file, toctree entries, and model list update are all consistent with each other. The only gap is a missing Requirements section; it does not prevent the docs from building or rendering correctly.

docs/source/models/hy_worldplay.rst — missing hardware Requirements section.

Important Files Changed

Filename	Overview
docs/source/models/hy_worldplay.rst	New HY-WorldPlay model card; missing Requirements section (VRAM/PyTorch) compared to the LingBot-World template it follows.
docs/source/_static/performance/hy_worldplay/perf-0530.md	New benchmark data file with a single GB300 row; straightforward, no issues.
docs/source/index.rst	Adds HY-WorldPlay toctree entry after LingBot-World; correct and consistent with models/index.rst placement.
docs/source/models/index.rst	Adds HY-WorldPlay bullet to the implemented-models list; no issues.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[docs/source/index.rst\ntoctree] --> B[models/hy_worldplay.rst]
    C[docs/source/models/index.rst\nmodel list] --> B
    B --> D[Installation\nuv sync integrations/hy_worldplay]
    B --> E[Running the method\nflashdreams-run hy-worldplay-wan-i2v-5b]
    B --> F[Sample video grid\nresearch.nvidia.com CDN mp4s]
    B --> G[Profiling benchmark]
    G --> H[_static/performance/hy_worldplay/perf-0530.md\nGB300: official 1578ms / FlashDreams 1015ms]
    H --> I[benchmark_chart.js\nrenders bar chart]

Loading

_{Reviews (4): Last reviewed commit: "docs(hy_worldplay): drop img-1 from samp..." | Re-trigger Greptile}

[greptile-apps]

Duplicate link for "Project page" and "Official code"

Both buttons resolve to https://github.com/Tencent-Hunyuan/HY-WorldPlay. In the reference card (lingbot_world.rst) the two buttons point to distinct destinations — a dedicated project/landing page and the GitHub repo. With identical hrefs, one of the buttons is redundant and visitors clicking "Project page" land on a code repository, not a project overview. If there is no separate project page yet, consider removing one button or updating the href to the Hugging Face model page (https://huggingface.co/tencent/HY-WorldPlay), which is already referenced later in the file.

[greptile-apps]

"VAE encode/decode" vs "VAE-decode" inconsistency in benchmark copy

The section heading on line 148 describes "total DiT + VAE encode/decode runtime", but the figcaption on line 164 narrows that to "total DiT + VAE-decode runtime per autoregressive chunk". If VAE encoding is excluded from the measured interval (as the figcaption implies), the section-level description is inaccurate and may mislead readers comparing numbers across models.

[greptile-apps]

Citation section listed in PR description but absent from file

The PR description's "Contents" bullet explicitly lists "citation" as one of the card's sections, matching the pattern in lingbot_world.rst (which ends with a BibTeX Citation block). The section is missing here. If HY-WorldPlay has a corresponding arXiv/paper reference it should be added; if not, the PR description should be updated to reflect that the section was intentionally omitted.

[wenqingw-nv]

/ok to test 07153d7