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docs: document video reference image support and constraints

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leejet committed 2026-10-06 20:03:52 +08:00
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examples/server/api.md
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@@ -1095,7 +1095,8 @@ Response fields:
Compared with `img_gen`, the `vid_gen` request body:
- `vid_gen` is a single video sequence job, so `batch_count` is not part of the request schema
- `ref_images`, `mask_image`, `control_image`, `control_strength`, `ip_adapter_image`, `ip_adapter_strength`, and `embed_image_metadata` are not part of the request schema
- `mask_image`, `control_image`, `control_strength`, `ip_adapter_image`, `ip_adapter_strength`, and `embed_image_metadata` are not part of the request schema
- `ref_images` is accepted for MiniMax-H3 Ref2VA conditioning; other video model families currently ignore it
- `vid_gen` adds `end_image`, `control_frames`, `high_noise_sample_params`, `video_frames`, `fps`, `moe_boundary`, and `vace_strength`
Example:
@@ -1116,6 +1117,7 @@ Example:
"init_image": null,
"end_image": null,
"ref_images": [],
"control_frames": [],
"sample_params": {
@@ -1185,6 +1187,17 @@ Example:
}
```
### Reference Image Rules
- `ref_images` contains reference images for MiniMax-H3 Ref2VA conditioning.
- Images retain request order and correspond to `<Picture 1>`, `<Picture 2>`, and so on in the prompt.
- For MiniMax-H3, non-empty `ref_images` cannot be combined with `init_image` or `end_image`. A conflicting API request fails during generation; the WebUI checks this before submission.
- MiniMax-H3 does not support `control_frames`; leave that array empty.
- Other video model families currently ignore `ref_images`.
- `features_by_mode.vid_gen` does not currently advertise `ref_images`; its absence is not an indication that MiniMax-H3 reference images are unsupported.
See [MiniMax-H3 reference conditioning](../../docs/minimax_h3.md#reference-to-audio-video-conditioning) for model requirements and prompt examples.
### LoRA Rules
- The server only accepts explicit LoRA entries from the `lora` field.
@@ -1202,6 +1215,7 @@ Channel expectations:
- `init_image`: 3 channels
- `end_image`: 3 channels
- `ref_images[]`: decoded with native channels, then converted to RGB by MiniMax-H3
- `control_frames[]`: 3 channels
Frame ordering rules:
@@ -1240,6 +1254,7 @@ Image and frame fields:
| --- | --- |
| `init_image` | `string \| null` |
| `end_image` | `string \| null` |
| `ref_images` | `array<string>` |
| `control_frames` | `array<string>` |
LoRA fields: