diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..734e422
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "third_party/SMPLer-X"]
+	path = third_party/SMPLer-X
+	url = https://github.com/electron-rare/SMPLer-X.git
diff --git a/NOTICE.md b/NOTICE.md
new file mode 100644
index 0000000..81e221b
--- /dev/null
+++ b/NOTICE.md
@@ -0,0 +1,40 @@
+# AV-Live Third-Party Notices
+
+AV-Live includes or depends on the following third-party works,
+which are licensed under their own terms.
+
+## Body Mesh Recovery Models
+
+### Multi-HMR (NAVER, 2025)
+
+- **License**: NAVER Non-Commercial License
+  (https://github.com/naver/multi-hmr/blob/main/LICENSE.txt)
+- **Use**: Non-commercial only. Body mesh recovery from camera input.
+- **Integration**: model checkpoint downloaded at runtime to
+  `~/.cache/av-live-multihmr/`. No source code vendored.
+
+### SMPLer-X (S-Lab, ECCV 2024)
+
+- **License**: S-Lab License 1.0
+  (`third_party/SMPLer-X/LICENSE` after submodule init)
+- **Use**: Non-commercial only. Whole-body mesh recovery (SMPL-X).
+- **Integration**: vendored as git submodule at
+  `third_party/SMPLer-X` (fork `electron-rare/SMPLer-X`, kept in
+  sync with `caizhongang/SMPLer-X` or its current upstream).
+- **Modifications in fork**: minimal patches for ARM macOS Python
+  3.14 inference (replace mmdet detector with Ultralytics YOLO,
+  shim `mmcv.Config` via `mmcv-lite`).
+
+## Implication
+
+**AV-Live integrates non-commercial-only model code from Multi-HMR
+and SMPLer-X.** Commercial deployment (paid performances, packaged
+installations sold to clients) requires either :
+
+1. Obtaining commercial licenses from NAVER and S-Lab respectively, OR
+2. Replacing both integrations with MIT/Apache-licensed alternatives
+   (see `docs/superpowers/plans/2026-05-13-modern-body-mesh-survey.md`
+   for candidates like Fast-SAM-3D-Body which is MIT-licensed).
+
+The AV-Live source code itself (sound_algo, oscope-of, launcher,
+data_only_viz integration glue) is under GPL-3.0 (see root LICENSE).
diff --git a/data_only_viz/pyproject.toml b/data_only_viz/pyproject.toml
index fb3095a..66574f5 100644
--- a/data_only_viz/pyproject.toml
+++ b/data_only_viz/pyproject.toml
@@ -64,6 +64,25 @@ multihmr = [
     "pillow>=10.0",
     "tqdm>=4.65",
 ]
+# SMPLer-X (S-Lab, ECCV 2024, NON-COMMERCIAL). Code source vendu
+# via git submodule third_party/SMPLer-X (fork electron-rare).
+# mmcv-lite suffit pour Config (le repo vendorise sa propre mmpose).
+# Le detector mmdet est remplace par YOLO Ultralytics (extras pose).
+smplerx = [
+    "torch>=2.4",
+    "torchvision>=0.19",
+    "smplx>=0.1.28",
+    "mmcv-lite>=2.1",
+    "ultralytics>=8.3",
+    "opencv-python>=4.10",
+    "numpy>=1.26,<2",
+    "scipy>=1.13",
+    "einops>=0.8",
+    "pillow>=10.0",
+    "tqdm>=4.65",
+    "yacs>=0.1.8",
+    "timm>=1.0",
+]
 
 [tool.uv]
 package = false
diff --git a/data_only_viz/scripts/setup_smpler_x.sh b/data_only_viz/scripts/setup_smpler_x.sh
new file mode 100755
index 0000000..f6ff5b0
--- /dev/null
+++ b/data_only_viz/scripts/setup_smpler_x.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+# Setup SMPLer-X-S inference pipeline pour ARM Mac (M5).
+#
+# Stratégie : SMPLer-X vendorise sa propre copie de mmpose dans
+# transformer_utils/mmpose/, donc on n'a besoin que de :
+#   - mmcv-lite (pour `from mmcv import Config`)
+#   - smplx (pour decode SMPL-X params)
+#   - YOLO/Ultralytics (déjà dans extras pose) pour body detection
+#
+# On évite mmdet/mmcv-full/mmpose pip installs qui plantent sur ARM
+# Python 3.14.
+set -euo pipefail
+
+CACHE="$HOME/.cache/av-live-smplerx"
+# Repo source = git submodule electron-rare/SMPLer-X (fork S-Lab 1.0)
+# initialise au niveau du repo AV-Live racine.
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+REPO_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
+REPO="$REPO_ROOT/third_party/SMPLer-X"
+
+mkdir -p "$CACHE/checkpoints" "$CACHE/models/smplx"
+
+if [ ! -d "$REPO/main" ]; then
+    echo "==> Init git submodule SMPLer-X"
+    ( cd "$REPO_ROOT" && git submodule update --init third_party/SMPLer-X )
+fi
+
+CKPT="$CACHE/checkpoints/smpler_x_s32.pth.tar"
+if [ ! -f "$CKPT" ]; then
+    echo "==> Telechargement SMPLer-X-S checkpoint (ViT-S, ~150 MB)"
+    curl -fL --progress-bar \
+        "https://huggingface.co/caizhongang/SMPLer-X/resolve/main/smpler_x_s32.pth.tar" \
+        -o "$CKPT" \
+        || { echo "ERREUR download checkpoint"; exit 1; }
+fi
+
+SMPLX="$CACHE/models/smplx/SMPLX_NEUTRAL.npz"
+SHARED="$HOME/.cache/av-live-multihmr/models/smplx/SMPLX_NEUTRAL.npz"
+if [ ! -f "$SMPLX" ]; then
+    if [ -f "$SHARED" ]; then
+        echo "==> Symlink SMPLX_NEUTRAL.npz depuis cache Multi-HMR"
+        ln -sf "$SHARED" "$SMPLX"
+    else
+        echo ""
+        echo "MANUEL REQUIS :"
+        echo "  1. Inscrivez-vous sur https://smpl-x.is.tue.mpg.de/"
+        echo "  2. Telechargez 'SMPL-X v1.1 (NPZ + PKL)'"
+        echo "  3. Extraire SMPLX_NEUTRAL.npz vers : $SMPLX"
+        echo "  OU lance d'abord scripts/setup_multihmr.sh et symlink."
+    fi
+fi
+
+echo "Setup OK. Cache : $CACHE"
+echo "Files :"
+ls -lh "$CACHE/checkpoints/" 2>/dev/null
+echo ""
+echo "Next: ajouter 'mmcv-lite' au pyproject.toml et 'uv sync --extra smplerx'"
diff --git a/third_party/SMPLer-X b/third_party/SMPLer-X
new file mode 160000
index 0000000..064baef
--- /dev/null
+++ b/third_party/SMPLer-X
@@ -0,0 +1 @@
+Subproject commit 064baef0e4ab5277a3297691bc1d46ea5412586f