[Diffusion] [Model] Dreamid omni (#1855)

Signed-off-by: dengyunyang <584797741@qq.com>

docs/user_guide/examples/offline_inference/x_to_video_audio.md

@@ -0,0 +1,58 @@
+# X-To-Video-Audio
+
+The `DreamID-Omni` pipeline generates short videos from text, image and video.
+
+## Local CLI Usage
+### Download the Model locally
+Since DreamID-Omni combine multiple models, and without any config, so we need to download them locally.
+
+```bash
+python download_dreamid_omni.py --output-dir ./dreamid_omni
+```
+After download, the model directory will look like this:
+
+```
+dreamid_omni/
+├── DreamID-Omni/
+│   ├── dreamid_omni.safetensors
+├── MMAudio/
+│   ├── ext_weights/
+│   │   ├── best_netG.pt
+│   │   ├── v1-16.pth
+├── Wan2.2-TI2V-5B/
+│   ├── google/*
+│   ├── models_t5_umt5-xxl-enc-bf16.pth
+│   ├── Wan2.2_VAE.pth
+│
+├── model_index.json # create by download_dreamid_omni.py
+```
+
+### Run the Inference
+```
+python x_to_video_audio.py \
+  --model /xx/dreamid_omni \
+  --prompt "Two people walking together and singing happily" \
+  --image-path ./example0.png ./example1.png \
+  --audio-path ./example0.wav ./example1.wav \
+  --video-negative-prompt "jitter, bad hands, blur, distortion" \
+  --audio-negative-prompt "robotic, muffled, echo, distorted" \
+  --cfg-parallel-size 2 \
+  --num-inference-steps 45 \
+  --height 704 \
+  --width 1280 \
+  --output dreamid_omni.mp4
+```
+In the current test scenario (2 images + 2 audio inputs), the VRAM requirement is 72GB, regardless of whether cfg-parallel is enabled or disabled.
+The VRAM usage can be reduced by enabling CPU offload via --enable-cpu-offload.
+
+Key arguments:
+- `--prompt`: text description (string).
+- `--model`: path to the model local directory.
+- `--height/--width`: output resolution (defaults 704 * 1024).
+- `--image-path`: path to the input image list.
+- `--audio-path`: path to the input audio list, indicate the timbre of the output video.
+- `--cfg-parallel-size`: number of parallel cfg parallel (defaults 1).
+- `--num-inference-steps`: number of denoising steps (defaults 45).
+- `--video-negative-prompt`: negative prompt for video generation.
+- `--audio-negative-prompt`: negative prompt for audio generation.
+- `--enable-cpu-offload`: enable CPU offload (defaults False).