Add image-to-video with negative prompt example

.gitattributes

@@ -51,3 +51,4 @@ assets/edge_i2v_output.mp4 filter=lfs diff=lfs merge=lfs -text
 assets/edge_action_fd_umi_2chunk_output.mp4 filter=lfs diff=lfs merge=lfs -text
 assets/edge_action_id_av_0_output.png filter=lfs diff=lfs merge=lfs -text
 assets/edge_action_id_av_1_output.png filter=lfs diff=lfs merge=lfs -text
+assets/edge_i2v_negprompt_output.mp4 filter=lfs diff=lfs merge=lfs -text

README.md

@@ -481,14 +481,22 @@ Cosmos3-Edge is a compact omni model that fits on a single GPU and is the recomm
 
 #### Image to video
 
+Image-to-video generation steered by a structured **negative prompt** that keeps the model away from common failure modes (temporal flicker, morphing geometry, broken physics, unstable camera push-in). We pass the curated `negative_prompt.json` from `assets/` as the per-sample `negative_prompt` (JSON-encoded as a string, mirroring the model's default negative caption format).
+
 ```shell
 BASE="https://huggingface.co/nvidia/Cosmos3-Edge/resolve/main/assets"
 python - "$BASE" <<'PY'
 import json, sys, urllib.request
 base = sys.argv[1]
 prompt = urllib.request.urlopen(f"{base}/example_i2v_prompt.json").read().decode()
+negative = urllib.request.urlopen(f"{base}/negative_prompt.json").read().decode()
 json.dump(
-    {"model_mode": "image2video", "prompt": prompt, "vision_path": f"{base}/example_i2v_input.jpg"},
+    {
+        "model_mode": "image2video",
+        "prompt": prompt,
+        "vision_path": f"{base}/example_i2v_input.jpg",
+        "negative_prompt": json.dumps(json.loads(negative)),
+    },
     open("i2v_edge.json", "w"), indent=2,
 )
 PY
@@ -512,7 +520,7 @@ The generated video is written to `outputs/omni_edge/<sample_name>/vision.mp4`.
 
 Example output:
 
-<video controls width="832" height="480" src="https://huggingface.co/nvidia/Cosmos3-Edge/resolve/main/assets/edge_i2v_output.mp4"></video>
+<video controls width="832" height="480" src="https://huggingface.co/nvidia/Cosmos3-Edge/resolve/main/assets/edge_i2v_negprompt_output.mp4"></video>
 
 #### Action — forward dynamics
 

assets/edge_i2v_negprompt_output.mp4

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:f2d41ae997adea1eef0f046b837404d6add2798e050974ea36696cee4b3efd00
+size 23017533