vroid-vrma-photobooth-pipeline

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Extract VRoid Studio Photo Booth animation clips from a local AssetRipper Unity export and batch-convert them into valid .vrma files via Unity + UniVRM. Use when direct AssetBundle loading fails due Unity version/build-target mismatch.

grtninja By grtninja schedule Updated 3/5/2026

name: vroid-vrma-photobooth-pipeline description: Extract VRoid Studio Photo Booth animation clips from a local AssetRipper Unity export and batch-convert them into valid .vrma files via Unity + UniVRM. Use when direct AssetBundle loading fails due Unity version/build-target mismatch.

VRoid VRMA Photo Booth Pipeline

Use this skill to convert VRoid Studio Photo Booth motions into real .vrma files.

Workflow

  1. Export data.unity3d to a Unity project with AssetRipper (local, manual step).
  2. Prepare the exported project for UniVRM batch export.
  3. Run Unity batch export for .anim clips under Photo Booth roots.
  4. Verify summary and VRMC_vrm_animation presence across all outputs.
  5. Open output folder for manual inspection.

Commands

Prepare AssetRipper-exported project:

python3 scripts/prepare_unity_project.py \
  --unity-project "C:/path/to/ExportedProject" \
  --univrm-root "C:/path/to/univrm-0.128.0" \
  --json-out .tmp/vroid-vrma-prepare.json

Run Unity batch export:

python3 scripts/export_vrma_batch.py \
  --unity-exe "C:/Program Files/Unity/Hub/Editor/6000.3.5f2/Editor/Unity.exe" \
  --unity-project "C:/path/to/ExportedProject" \
  --out-dir "C:/path/to/vroid_photobooth_vrma_out" \
  --json-out .tmp/vroid-vrma-export.json

Verify output integrity:

python3 scripts/verify_vrma_outputs.py \
  --out-dir "C:/path/to/vroid_photobooth_vrma_out" \
  --json-out .tmp/vroid-vrma-verify.json

References

  • references/workflow.md
  • references/troubleshooting.md

Loopback

If export summary shows failures:

  1. Stop and inspect failed rows in vrma_export_summary.tsv.
  2. Re-run with --limit + --name-filter to isolate clips.
  3. Resume full export only after isolated export succeeds.
Install via CLI
npx skills add https://github.com/grtninja/skill-arbiter --skill vroid-vrma-photobooth-pipeline
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