docs: added "api reference"

Author: TimPietrusky

README.md

@@ -8,6 +8,59 @@
 - Automatic model loading and initialization
 - [UploadThing](https://uploadthing.com/) integration for video upload
 
+## API Reference
+
+### Input Parameters
+
+```json
+{
+  "input": {
+    "positive_prompt": "a cat playing with yarn, cute, fluffy, detailed fur",
+    "negative_prompt": "",
+    "width": 848,
+    "height": 480,
+    "seed": 42,
+    "steps": 40,
+    "cfg": 6,
+    "num_frames": 31,
+    "vae": {
+      "enable_vae_tiling": false,
+      "tile_sample_min_width": 312,
+      "tile_sample_min_height": 160,
+      "tile_overlap_factor_width": 0.25,
+      "tile_overlap_factor_height": 0.25,
+      "auto_tile_size": false,
+      "frame_batch_size": 8
+    }
+  }
+}
+```
+
+#### Core Parameters
+
+| Parameter         | Description                                                            | Default |
+| ----------------- | ---------------------------------------------------------------------- | ------- |
+| `positive_prompt` | Text description of what you want to generate                          | `""`    |
+| `negative_prompt` | Text description of what you want to avoid in the generation           | `""`    |
+| `width`           | Output video width in pixels                                           | `848`   |
+| `height`          | Output video height in pixels                                          | `480`   |
+| `seed`            | Random seed for reproducible results                                   | `1337`  |
+| `steps`           | Number of denoising steps (higher = better quality, slower generation) | `40`    |
+| `cfg`             | Classifier-free guidance scale (how closely to follow the prompt)      | `6`     |
+| `num_frames`      | Number of frames to generate                                           | `31`    |
+
+#### VAE Parameters
+
+| Parameter                    | Description                                | Default |
+| ---------------------------- | ------------------------------------------ | ------- |
+| `enable_vae_tiling`          | Enable tiling for VAE decoding             | `false` |
+| `tile_sample_min_width`      | Minimum tile width when tiling is enabled  | `312`   |
+| `tile_sample_min_height`     | Minimum tile height when tiling is enabled | `160`   |
+| `tile_overlap_factor_width`  | Overlap factor between tiles (width)       | `0.25`  |
+| `tile_overlap_factor_height` | Overlap factor between tiles (height)      | `0.25`  |
+| `auto_tile_size`             | Automatically determine tile size          | `false` |
+| `frame_batch_size`           | Number of frames to process in parallel    | `8`     |
+
 ## Deployment
 
 Deploy this worker on RunPod using the [GitHub Integration](https://docs.runpod.io/serverless/github-integration).