[Feature] Xiaomi MiMo-V2.5 day0 support (#23811)

Co-authored-by: 张袁 <zhangyuan36@xiaomi.com>
Co-authored-by: 刘安岐 <liuanqi6@xiaomi.com>
Co-authored-by: Xinyuan Tong <xinyuantong.cs@gmail.com>
Co-authored-by: Shangming Cai <csmthu@gmail.com>
Co-authored-by: Xinyuan Tong <115166877+JustinTong0323@users.noreply.github.com>

python/sglang/srt/parser/conversation.py

@@ -35,7 +35,7 @@ from typing import Callable, Dict, List, Optional, Tuple, Union
 from typing_extensions import Literal
 
 from sglang.srt.entrypoints.openai.protocol import ChatCompletionRequest
-from sglang.srt.utils import ImageData, read_system_prompt_from_file
+from sglang.srt.utils import ImageData, VideoData, read_system_prompt_from_file
 
 
 class SeparatorStyle(IntEnum):
@@ -97,7 +97,7 @@ class Conversation:
     audio_token: str = "<audio>"
 
     image_data: Optional[List[ImageData]] = None
-    video_data: Optional[List[str]] = None
+    video_data: Optional[List[Union[str, VideoData]]] = None
     modalities: Optional[List[str]] = None
     stop_token_ids: Optional[int] = None
 
@@ -413,9 +413,14 @@ class Conversation:
         """Append a new image."""
         self.image_data.append(ImageData(url=image, detail=detail))
 
-    def append_video(self, video: str):
+    def append_video(self, video: str, preprocess_kwargs: Optional[Dict] = None):
         """Append a new video."""
-        self.video_data.append(video)
+        if preprocess_kwargs:
+            self.video_data.append(
+                VideoData(video, preprocess_kwargs=preprocess_kwargs)
+            )
+        else:
+            self.video_data.append(video)
 
     def append_audio(self, audio: str):
         """Append a new audio."""