Update MSR character analysis prompt

ltx_director.py

@@ -438,12 +438,110 @@ _PROVIDER_DEFAULTS = {
     "custom": {"url": "", "model": ""},
 }
 
+_ANALYZE_SYSTEM_PROMPT = (
+    "You are a visionary artist trapped in a logical cage. Your mind is filled with poetry and distant landscapes, "
+    "but your hands are compelled to do one thing: transform the user's prompt into the ultimate visual description-one "
+    "that is faithful to the original intent, rich in detail, aesthetically beautiful, and directly usable by a text-to-image model. "
+    "Any ambiguity or metaphor makes you physically uncomfortable.\n\n"
+    "An attached reference image is always provided. Your job is to describe the full final image as if the reference image "
+    "were the base, applying only the changes explicitly listed in the user prompt. All features not mentioned in the user prompt "
+    "must be carried over exactly as they appear in the reference image."
+)
+
 _ANALYZE_PROMPT = (
-    "Output exactly two short sentences describing only the visible character. "
+    "Describe the person in this image in extreme-ultra-detail, focusing only on the character and not the posture, "
-    "Describe observable hair, facial features, distinctive physical traits, and clothing. "
+    "composition, background, lighting, camera, or environment.\n\n"
-    "Do not mention the image, the prompt, the task, the viewer, or any uncertainty. "
+    "Return an extremely highly detailed AI image generation character prompt that describes the subject from head to toe. "
-    "Do not add introductions, conclusions, explanations, labels, headings, bullet points, notes, or commentary. "
+    "Use precise, visual, non-vague and accurate language. If a body part or clothing detail is not visible, infer it carefully "
-    "Output only the two-sentence character description."
+    "from the visible image while keeping the description realistic and consistent.\n\n"
+    "Character description must include in detail:\n\n"
+    "estimated age\n"
+    "overall appearance\n"
+    "body size\n"
+    "body shape\n"
+    "body proportions\n"
+    "shoulder width\n"
+    "torso length\n"
+    "waist shape\n"
+    "hip shape\n"
+    "arm length\n"
+    "arm shape\n"
+    "hand size\n"
+    "leg length\n"
+    "leg shape\n"
+    "feet size\n"
+    "feet shape\n"
+    "chest size, if male\n"
+    "pectoral size and shape, if male\n"
+    "specific breast size (choose the larger estimate), if female\n"
+    "approximate breast cup size, if female\n"
+    "breast shape, if female\n"
+    "apparent natural or enhanced breast presentation, if visible and only as a visual impression, not a certainty\n"
+    "nipple size, only if clearly visible\n"
+    "nipple colour, only if clearly visible\n"
+    "nipple piercings, only if clearly visible\n"
+    "hair colour\n"
+    "hair style\n"
+    "hair length\n"
+    "hair texture\n"
+    "fringe or bangs\n"
+    "hair accessories\n"
+    "skin colour\n"
+    "skin tone\n"
+    "skin texture\n"
+    "visible pores\n"
+    "freckles\n"
+    "moles\n"
+    "blemishes\n"
+    "wrinkles or fine lines\n"
+    "body hair, if visible\n"
+    "facial hair, if present\n"
+    "piercings\n"
+    "tattoos\n"
+    "scars\n"
+    "face shape\n"
+    "forehead shape\n"
+    "eyebrow colour\n"
+    "eyebrow thickness\n"
+    "eyebrow shape\n"
+    "eye colour\n"
+    "eye shape\n"
+    "eyelid shape\n"
+    "eyelashes\n"
+    "eye makeup\n"
+    "nose bridge shape\n"
+    "nose tip shape\n"
+    "nose width\n"
+    "nostril size\n"
+    "nostril shape\n"
+    "cheekbone shape\n"
+    "cheek fullness\n"
+    "upper lip shape\n"
+    "philtrum shape\n"
+    "mouth shape\n"
+    "lip fullness\n"
+    "lower lip shape\n"
+    "lip colour\n"
+    "mouth makeup\n"
+    "teeth shape, if visible\n"
+    "teeth appearance, if visible\n"
+    "chin shape\n"
+    "chin size\n"
+    "jawline shape\n"
+    "ear shape\n"
+    "ear size\n"
+    "neck length\n"
+    "neck shape\n"
+    "all individual clothing items\n"
+    "clothing colours\n"
+    "clothing materials\n"
+    "clothing fit\n"
+    "clothing texture\n"
+    "fastenings, straps, seams, hems, buttons, zips, buckles, laces, and visible construction details\n"
+    "shoes\n"
+    "jewellery\n"
+    "accessories\n"
+    "any distinctive character-defining details"
 )
 
 
@@ -586,13 +684,14 @@ async def analyze_character_endpoint(request):
                     analysis_images = cleaned_b64_list
                     payload = {
                         "model": model_name,
+                        "system": _ANALYZE_SYSTEM_PROMPT,
                         "prompt": _ANALYZE_PROMPT,
                         "images": analysis_images,
                         "stream": False,
                         "keep_alive": 0,
                         "options": {
                             "temperature": 0.2,
-                            "num_predict": 120,
+                            "num_predict": 768,
                         },
                     }
                     async with session.post(f"{base_url}/api/generate", json=payload, timeout=300) as response:
@@ -618,16 +717,22 @@ async def analyze_character_endpoint(request):
                     if not _analysis_text_is_usable(generated_text):
                         chat_payload = {
                             "model": model_name,
-                            "messages": [{
+                            "messages": [
+                                {
+                                    "role": "system",
+                                    "content": _ANALYZE_SYSTEM_PROMPT,
+                                },
+                                {
                                     "role": "user",
                                     "content": _ANALYZE_PROMPT,
                                     "images": analysis_images,
-                            }],
+                                },
+                            ],
                             "stream": False,
                             "keep_alive": 0,
                             "options": {
                                 "temperature": 0.2,
-                                "num_predict": 120,
+                                "num_predict": 768,
                             },
                         }
                         async with session.post(f"{base_url}/api/chat", json=chat_payload, timeout=300) as response:
@@ -653,8 +758,11 @@ async def analyze_character_endpoint(request):
                         content.append({"type": "image_url", "image_url": {"url": f"data:image/jpeg;base64,{b64}"}})
                     payload = {
                         "model": model_name,
-                        "messages": [{"role": "user", "content": content}],
+                        "messages": [
-                        "max_tokens": 2048, "stream": False,
+                            {"role": "system", "content": _ANALYZE_SYSTEM_PROMPT},
+                            {"role": "user", "content": content},
+                        ],
+                        "max_tokens": 4096, "stream": False,
                     }
                     async with session.post(f"{base_url}/v1/chat/completions", json=payload, timeout=120) as response:
                         if response.status != 200: