552 lines
25 KiB
Python
552 lines
25 KiB
Python
import asyncio
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import random
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import time
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import threading
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import hashlib
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import base64
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import os
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import tempfile
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import shutil
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from io import BytesIO
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from typing import List, Optional, Union, Tuple
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import torch
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import numpy as np
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from PIL import Image
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import imageio
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from comfy.model_management import InterruptProcessingException
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from ..services.vlm import VisionService
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from ..utils.common import format_api_error, format_model_with_thinking, generate_request_id, log_prepare, log_error, TASK_VIDEO_CAPTION, SOURCE_NODE
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from ..services.thinking_control import build_thinking_suppression
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from .base import VLMNodeBase
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class VideoCaptionNode(VLMNodeBase):
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"""
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视频反推提示词节点
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分析输入视频或图像序列并生成描述性提示词
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"""
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@classmethod
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def INPUT_TYPES(cls):
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# 从config_manager获取系统提示词配置
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from ..config_manager import config_manager
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system_prompts = config_manager.get_system_prompts()
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# ---获取所有 video_prompts 作为选项---
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video_prompts = {}
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if system_prompts and 'video_prompts' in system_prompts:
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video_prompts = system_prompts['video_prompts']
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# 构建提示词模板选项（支持分类格式：类别/规则名称）
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prompt_template_options = []
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for key, value in video_prompts.items():
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# 过滤掉不在后端显示的规则
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show_in = value.get('showIn', ["frontend", "node"])
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if 'node' not in show_in:
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continue
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name = value.get('name', key)
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category = value.get('category', '')
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# 如果有分类，显示为 "类别/规则名称"，否则直接显示规则名称
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display_name = f"{category}/{name}" if category else name
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prompt_template_options.append(display_name)
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# 如果没有选项,添加一个默认选项
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if not prompt_template_options:
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prompt_template_options = ["默认视频反推提示词"]
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# ---动态获取VLM服务/模型列表---
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service_options = cls.get_vlm_service_options()
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default_service = service_options[0] if service_options else "智谱"
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return {
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"required": {
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"rule": (prompt_template_options, {"default": prompt_template_options[0] if prompt_template_options else "默认视频反推提示词", "tooltip": "💡Template Config: Settings -> ✨Prompt Assistant -> Rule Editor"}),
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"custom_rule": ("BOOLEAN", {"default": False, "label_on": "Enable", "label_off": "Disable", "tooltip": "⚠️ Enable to use custom rule content below instead of preset"}),
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"custom_rule_content": ("STRING", {"multiline": True, "default": "", "placeholder": "请输入临时规则内容,仅在启用'临时规则'时生效", "tooltip": "在此输入您的自定义规则内容; 💡输入触发词[R],可以让节点每次都被执行"}),
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"user_prompt": ("STRING", {"multiline": True, "default": "", "placeholder": "输入额外的具体要求，将与规则一起发送给模型", "tooltip": "输入额外的具体要求，将与规则一起发送给模型; 💡输入触发词[R],可以让节点每次都被执行"}),
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"vlm_service": (service_options, {"default": default_service, "tooltip": "Select VLM service and model"}),
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"sampling_mode": (["Auto (Uniform)", "Manual (Indices)"], {"default": "Auto (Uniform)"}),
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"frame_count": ("INT", {"default": 5, "min": 1, "max": 32, "step": 1, "tooltip": "💡Only for 'Auto' mode. Frame limits: GLM-4V≤5, GLM-4.6V≤100, Qwen-VL≤100, Gemini≤3000, Grok≤10"}),
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"manual_indices": ("STRING", {"default": "", "placeholder": "Input indices (e.g. 0,10,20) or range (e.g. 0-10)", "tooltip": "💡Only for 'Manual' mode. Supports comma-separated or range. Negative indices allowed."}),
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# Ollama Automatic VRAM Unload
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"ollama_auto_unload": ("BOOLEAN", {"default": True, "label_on": "Enable", "label_off": "Disable", "tooltip": "Auto unload Ollama model after generation"}),
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},
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"hidden": {
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"unique_id": "UNIQUE_ID",
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},
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"optional": {
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"video": ("VIDEO",),
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"image_sequence": ("IMAGE",),
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}
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}
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RETURN_TYPES = ("STRING", "IMAGE")
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RETURN_NAMES = ("prompt_output", "preview_frames")
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FUNCTION = "analyze_video_content"
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CATEGORY = "✨Prompt Assistant"
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OUTPUT_NODE = False
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@classmethod
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def IS_CHANGED(cls, video=None, image_sequence=None, rule=None, custom_rule=None, custom_rule_content=None, user_prompt=None, vlm_service=None, sampling_mode=None, frame_count=None, manual_indices=None, ollama_auto_unload=None, unique_id=None):
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"""
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只在输入内容真正变化时才触发重新执行
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"""
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# 检查是否包含强制刷新符号 [R]
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if cls._check_is_changed_bypass(rule, custom_rule_content, user_prompt):
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return float("nan")
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# 提取实际的tensor数据
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target_input = None
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if video is not None:
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if isinstance(video, dict):
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target_input = video.get('frames') or video.get('video')
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elif hasattr(video, 'video'):
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target_input = video.video
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elif hasattr(video, 'frames'):
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target_input = video.frames
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elif isinstance(video, torch.Tensor):
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target_input = video
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elif image_sequence is not None:
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target_input = image_sequence
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# 计算哈希值
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input_data_hash = ""
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if target_input is not None and isinstance(target_input, torch.Tensor):
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try:
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# 取部分帧和中心区域计算哈希,避免全量计算
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if len(target_input.shape) == 4:
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frames = target_input.shape[0]
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# 取首尾和中间帧
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indices = [0, frames // 2, frames - 1] if frames > 2 else range(frames)
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hash_data = b""
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for idx in indices:
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h, w = target_input.shape[1:3]
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center_h, center_w = h // 2, w // 2
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size = min(50, h // 4, w // 4)
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frame_data = target_input[idx,
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max(0, center_h - size):min(h, center_h + size),
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max(0, center_w - size):min(w, center_w + size),
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0].cpu().numpy().tobytes()
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hash_data += frame_data
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input_data_hash = hashlib.md5(hash_data).hexdigest()
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else:
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input_data_hash = "invalid_shape"
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except Exception:
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input_data_hash = "hash_error"
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# 组合所有输入的哈希值
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input_hash = hash((
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input_data_hash,
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rule,
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bool(custom_rule),
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custom_rule_content,
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user_prompt,
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vlm_service,
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sampling_mode,
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frame_count,
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manual_indices,
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bool(ollama_auto_unload)
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))
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return input_hash
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def analyze_video_content(self, rule, custom_rule, custom_rule_content, user_prompt, vlm_service, sampling_mode, frame_count, manual_indices, ollama_auto_unload, video=None, image_sequence=None, unique_id=None):
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"""
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分析视频或图像序列并生成提示词(使用抽帧模式)
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"""
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temp_video_path = None
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try:
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# 1. 验证输入
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if video is None and image_sequence is None:
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raise ValueError("Video Input or Image Sequence Input is required")
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# 2. 提取tensor数据
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input_tensor = None
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is_pre_sampled = False
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if video is not None:
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# 处理VideoFromFile对象(需要先保存再加载)
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if hasattr(video, 'save_to') and callable(getattr(video, 'save_to')):
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try:
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fd, temp_video_path = tempfile.mkstemp(suffix='.mp4')
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os.close(fd)
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video.save_to(temp_video_path)
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print(f"{self.PROCESS_PREFIX} VideoFromFile saved to temp")
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#从文件加载为tensor,传入抽帧参数进行预采样优化
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input_tensor = self._load_video_as_tensor(
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temp_video_path,
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target_count=frame_count if sampling_mode == "Auto (Uniform)" else None,
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target_indices_str=manual_indices if sampling_mode == "Manual (Indices)" else None
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)
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is_pre_sampled = True
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except Exception as e:
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if temp_video_path and os.path.exists(temp_video_path):
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os.unlink(temp_video_path)
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raise RuntimeError(f"VideoFromFile processing failed: {str(e)}")
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# 处理字典格式
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elif isinstance(video, dict):
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input_tensor = video.get('frames') or video.get('video')
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if input_tensor is None:
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for v in video.values():
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if isinstance(v, torch.Tensor):
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input_tensor = v
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break
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# 处理tensor
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elif isinstance(video, torch.Tensor):
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input_tensor = video
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# 尝试索引访问
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elif hasattr(video, '__getitem__'):
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try:
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first_item = video[0]
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if isinstance(first_item, torch.Tensor):
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input_tensor = first_item
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elif isinstance(first_item, dict):
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input_tensor = first_item.get('frames') or first_item.get('video')
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except Exception:
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pass
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if input_tensor is None:
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raise ValueError(f"Failed to extract tensor from VIDEO input")
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else:
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input_tensor = image_sequence
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# 3. 准备提示词
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prompt_template = None
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rule_name = "Custom Rule" if (custom_rule and custom_rule_content) else rule
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if custom_rule and custom_rule_content:
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prompt_template = custom_rule_content
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else:
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from ..config_manager import config_manager
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system_prompts = config_manager.get_system_prompts()
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video_prompts = {}
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if system_prompts and 'video_prompts' in system_prompts:
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video_prompts = system_prompts['video_prompts']
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# 查找模板（按显示名称匹配）
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# 显示名称格式：有分类时为 "类别/规则名称"，无分类时为 "规则名称"
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for key, value in video_prompts.items():
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name = value.get('name', key)
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category = value.get('category', '')
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# 构建与下拉列表一致的显示名称
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display_name = f"{category}/{name}" if category else name
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if display_name == rule:
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prompt_template = value.get('content')
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break
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# 允许用规则名称或键名直接匹配（兼容旧格式）
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if not prompt_template:
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for key, value in video_prompts.items():
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if value.get('name') == rule or key == rule:
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prompt_template = value.get('content')
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break
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if not prompt_template:
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prompt_template = "请详细描述这段视频的内容,包括主要事件、场景变化、人物动作和视觉风格。"
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rule_name = "Default Rule"
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# 拼接用户提示词
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if user_prompt and user_prompt.strip():
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prompt_template = f"{prompt_template}\n\n用户补充要求：\n{user_prompt}"
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# ---解析服务/模型字符串---
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service_id, model_name = self.parse_service_model(vlm_service)
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if not service_id:
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raise ValueError(f"Invalid service selection: {vlm_service}")
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# ---获取服务配置---
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from ..config_manager import config_manager
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service = config_manager.get_service(service_id)
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if not service:
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raise ValueError(f"Service config not found: {vlm_service}")
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# ---构建provider_config---
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# 查找指定的模型或默认模型
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vlm_models = service.get('vlm_models', [])
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target_model = None
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if model_name:
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# 查找指定的模型
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target_model = next((m for m in vlm_models if m.get('name') == model_name), None)
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if not target_model:
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# 使用默认模型或第一个模型
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target_model = next((m for m in vlm_models if m.get('is_default')),
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vlm_models[0] if vlm_models else None)
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if not target_model:
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raise ValueError(f"Service {vlm_service} has no available models")
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# 构建配置对象
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provider_config = {
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'provider': service_id,
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'model': target_model.get('name', ''),
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'base_url': service.get('base_url', ''),
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'api_key': service.get('api_key', ''),
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'temperature': target_model.get('temperature', 0.7),
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'max_tokens': target_model.get('max_tokens', 500),
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'top_p': target_model.get('top_p', 0.9),
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}
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# Ollama特殊处理:添加auto_unload配置
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if service.get('type') == 'ollama':
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provider_config['auto_unload'] = ollama_auto_unload
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model = provider_config.get('model', '')
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# 5. 抽帧处理
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request_id = generate_request_id("vcap", None, unique_id)
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# 检查是否关闭思维链
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disable_thinking_enabled = service.get('disable_thinking', True)
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thinking_extra = build_thinking_suppression(service_id, model) if disable_thinking_enabled else None
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model_display = format_model_with_thinking(model, bool(thinking_extra))
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# 获取服务显示名称
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service_display_name = service.get('name', service_id)
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# 准备阶段日志
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log_prepare(TASK_VIDEO_CAPTION, request_id, SOURCE_NODE, service_display_name, model_display, rule_name, {"模式": sampling_mode})
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# [Debug] 输出抽帧参数详情
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# print(f"{self.PROCESS_PREFIX} [video-caption-debug] 输入tensor形状:{input_tensor.shape} | is_pre_sampled:{is_pre_sampled}")
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# print(f"{self.PROCESS_PREFIX} [video-caption-debug] sampling_mode:{sampling_mode} | frame_count:{frame_count} | manual_indices:{manual_indices}")
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# 准备抽帧参数
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sampling_kwargs = {}
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if not is_pre_sampled:
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if sampling_mode == "Auto (Uniform)":
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sampling_kwargs['target_count'] = frame_count
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elif sampling_mode == "Manual (Indices)":
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sampling_kwargs['target_indices_str'] = manual_indices
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# 从tensor中提取帧并转为base64,同时获取预览tensor
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frames_data, preview_tensor = self._extract_frames_and_tensor(
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input_tensor,
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**sampling_kwargs
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)
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# [Debug] 输出抽帧结果
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# print(f"{self.PROCESS_PREFIX} [video-caption] 抽帧完成 | 帧数量:{len(frames_data)} | 预览tensor:{preview_tensor.shape}")
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# ---注入帧数元信息到提示词---
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# 解决模型识别帧数与实际帧数不一致的问题
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actual_frame_count = len(frames_data)
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frame_info_prefix = f"[重要提示：本次共提供了 {actual_frame_count} 帧图像，请务必逐帧分析，确保输出的描述数量与帧数一致。]\n\n"
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prompt_template = frame_info_prefix + prompt_template
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# 调用多图像分析 - 使用基类方法
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result = self._run_vision_task(
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VisionService.analyze_images,
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service_id,
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images_data=frames_data,
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request_id=request_id,
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prompt_content=prompt_template,
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custom_provider=service_id,
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custom_provider_config=provider_config,
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task_type=TASK_VIDEO_CAPTION,
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source=SOURCE_NODE
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)
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# 6. 处理结果
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if result and result.get('success'):
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description = result.get('data', {}).get('description', '').strip()
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if not description:
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raise RuntimeError("API returned empty result")
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return (description, preview_tensor)
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else:
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error_msg = result.get('error', 'Unknown error') if result else 'No result returned'
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# 如果是中断错误,直接抛出InterruptProcessingException,不打印日志(由基类打印)
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if error_msg == "任务被中断":
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raise InterruptProcessingException()
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raise RuntimeError(f"Analysis failed: {error_msg}")
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except InterruptProcessingException:
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# 不打印日志,由基类统一打印
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raise
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except Exception as e:
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error_msg = format_api_error(e, vlm_service)
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log_error(TASK_VIDEO_CAPTION, request_id, error_msg, source=SOURCE_NODE)
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raise RuntimeError(f"Analysis error: {error_msg}")
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finally:
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# 清理临时视频文件
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if temp_video_path and os.path.exists(temp_video_path):
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try:
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os.unlink(temp_video_path)
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except Exception:
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pass
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def _uniform_sample(self, l, n):
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"""
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从列表中均匀采样 n 个元素 (参考 video_sampling_guide.md)
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算法: 将列表分成 n 个等长区间,从每个区间的中心位置取样
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"""
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if n >= len(l):
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return l
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gap = len(l) / n
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idxs = [int(i * gap + gap / 2) for i in range(n)]
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# 确保索引不越界
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idxs = [min(i, len(l) - 1) for i in idxs]
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return [l[i] for i in idxs]
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def _parse_frame_indices(self, indices_str, total_frames):
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"""解析手动输入的帧索引字符串"""
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indices = set()
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if not indices_str:
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return []
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parts = indices_str.split(',')
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for part in parts:
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part = part.strip()
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if not part:
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continue
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try:
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if '-' in part:
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# Range: 0-10
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start_str, end_str = part.split('-')
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start = int(start_str)
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end = int(end_str)
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# Handle negative indices
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if start < 0: start += total_frames
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if end < 0: end += total_frames
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start = max(0, min(start, total_frames - 1))
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end = max(0, min(end, total_frames - 1))
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|
if start <= end:
|
|
indices.update(range(start, end + 1))
|
|
else:
|
|
# Single index
|
|
idx = int(part)
|
|
if idx < 0: idx += total_frames
|
|
idx = max(0, min(idx, total_frames - 1))
|
|
indices.add(idx)
|
|
except ValueError:
|
|
print(f"{self.LOG_PREFIX} 忽略无效的帧索引格式: {part}")
|
|
|
|
return sorted(list(indices))
|
|
|
|
def _extract_frames_and_tensor(self, tensor, target_count=None, target_indices_str=None):
|
|
"""从tensor中提取指定数量或指定索引的帧,返回(base64列表, 预览tensor)"""
|
|
total_frames = tensor.shape[0]
|
|
|
|
# 生成所有帧的索引列表
|
|
all_indices = list(range(total_frames))
|
|
|
|
selected_indices = []
|
|
if target_indices_str is not None:
|
|
# 手动模式
|
|
selected_indices = self._parse_frame_indices(target_indices_str, total_frames)
|
|
if not selected_indices:
|
|
print(f"{self.PROCESS_PREFIX} ⚠️ 手动帧索引无效或为空,回退到自动采样")
|
|
selected_indices = self._uniform_sample(all_indices, 8) # Default fallback
|
|
elif target_count is not None:
|
|
# 自动模式
|
|
selected_indices = self._uniform_sample(all_indices, target_count)
|
|
else:
|
|
# 默认全量
|
|
selected_indices = all_indices
|
|
|
|
# 提取选中的帧 [N, H, W, C]
|
|
selected_tensor = tensor[selected_indices]
|
|
|
|
frames_base64 = []
|
|
# 遍历选中的tensor进行转换
|
|
for i in range(selected_tensor.shape[0]):
|
|
frame_tensor = selected_tensor[i]
|
|
# 转为numpy [H, W, C] (0-255)
|
|
frame_np = (frame_tensor.cpu().numpy() * 255).astype(np.uint8)
|
|
# 转PIL
|
|
image = Image.fromarray(frame_np)
|
|
# 转Base64
|
|
buffer = BytesIO()
|
|
image.save(buffer, format="JPEG", quality=85)
|
|
encoded = base64.b64encode(buffer.getvalue()).decode('utf-8')
|
|
frames_base64.append(f"data:image/jpeg;base64,{encoded}")
|
|
|
|
return frames_base64, selected_tensor
|
|
|
|
def _load_video_as_tensor(self, video_path, target_count=None, target_indices_str=None):
|
|
"""
|
|
从视频文件加载为tensor
|
|
优化: 如果指定了target_count或target_indices_str,则只读取需要的帧 (Sample before Load)
|
|
"""
|
|
try:
|
|
import imageio
|
|
# 读取视频
|
|
reader = imageio.get_reader(video_path, 'ffmpeg')
|
|
|
|
# 获取总帧数
|
|
# 尝试从元数据获取,如果失败则使用count_frames (较慢)
|
|
try:
|
|
total_frames = reader.count_frames()
|
|
except Exception:
|
|
# 如果无法获取帧数,回退到读取所有帧
|
|
print(f"{self.PROCESS_PREFIX} 无法获取视频总帧数,将读取所有帧")
|
|
frames = []
|
|
for frame in reader:
|
|
frame_float = frame.astype(np.float32) / 255.0
|
|
frames.append(frame_float)
|
|
reader.close()
|
|
if not frames:
|
|
raise RuntimeError("视频文件中没有帧")
|
|
frames_array = np.stack(frames, axis=0)
|
|
tensor = torch.from_numpy(frames_array)
|
|
|
|
# 如果有采样要求,进行后处理采样
|
|
if target_count is not None or target_indices_str is not None:
|
|
print(f"{self.PROCESS_PREFIX} 视频加载回退: 读取全量帧后进行采样")
|
|
_, tensor = self._extract_frames_and_tensor(tensor, target_count, target_indices_str)
|
|
|
|
return tensor
|
|
|
|
# 计算需要读取的帧索引
|
|
indices_to_read = list(range(total_frames))
|
|
|
|
if target_indices_str is not None:
|
|
indices_to_read = self._parse_frame_indices(target_indices_str, total_frames)
|
|
print(f"{self.PROCESS_PREFIX} 视频加载优化(手动): 从 {total_frames} 帧中提取 {len(indices_to_read)} 帧")
|
|
elif target_count and total_frames > target_count:
|
|
indices_to_read = self._uniform_sample(indices_to_read, target_count)
|
|
print(f"{self.PROCESS_PREFIX} 视频加载优化(自动): 从 {total_frames} 帧中采样 {len(indices_to_read)} 帧")
|
|
|
|
# 优化读取: 只读取需要的帧
|
|
frames = []
|
|
|
|
# imageio的get_data(index)支持随机访问
|
|
for idx in indices_to_read:
|
|
try:
|
|
frame = reader.get_data(idx)
|
|
frame_float = frame.astype(np.float32) / 255.0
|
|
frames.append(frame_float)
|
|
except IndexError:
|
|
break
|
|
|
|
reader.close()
|
|
|
|
if not frames:
|
|
raise RuntimeError("未能读取到有效帧")
|
|
|
|
# 转换为torch tensor [N, H, W, C]
|
|
frames_array = np.stack(frames, axis=0)
|
|
tensor = torch.from_numpy(frames_array)
|
|
|
|
return tensor
|
|
except Exception as e:
|
|
raise RuntimeError(f"视频文件加载失败: {str(e)}")
|
|
|
|
# 节点映射，用于ComfyUI注册节点
|
|
NODE_CLASS_MAPPINGS = {
|
|
"VideoCaptionNode": VideoCaptionNode,
|
|
}
|
|
|
|
NODE_DISPLAY_NAME_MAPPINGS = {
|
|
"VideoCaptionNode": "✨Video Caption",
|
|
}
|