补充分镜视频相关文档说明

docs/en/user-guide/workflows.md

@@ -16,10 +16,42 @@ Pixelle-Video is built on the ComfyUI architecture and supports custom workflows
 
 Located in `workflows/selfhost/` or `workflows/runninghub/`
 
+Used for Text-to-Speech, supporting various TTS engines:
+- Edge-TTS
+- Index-TTS (supports voice cloning)
+- Other ComfyUI-compatible TTS nodes
+
 ### Image Generation Workflows
 
 Located in `workflows/selfhost/` or `workflows/runninghub/`
 
+Used for generating static images as video backgrounds:
+- FLUX series models
+- Stable Diffusion series models
+- Other image generation models
+
+### Video Generation Workflows
+
+Located in `workflows/selfhost/` or `workflows/runninghub/`
+
+**New Feature**: Supports AI video generation to create dynamic video content.
+
+**Preset Workflows**:
+- `runninghub/video_wan2.1_fusionx.json`: Cloud workflow (recommended)
+  - Based on WAN 2.1 model
+  - No local setup required, accessed via RunningHub API
+  - Supports Text-to-Video generation
+  
+- `selfhost/video_wan2.1_fusionx.json`: Local workflow
+  - Requires local ComfyUI environment
+  - Requires installation of corresponding video generation nodes
+  - Suitable for users with local GPU
+
+**Use Cases**:
+- Works with `video_*.html` templates
+- Automatically generates dynamic video backgrounds based on scripts
+- Enhances visual expressiveness and viewing experience
+
 ---
 
 ## Custom Workflows