langchain - 💡(How to fix) Fix VideoContentBlock ValueError: Block of type video is not supported

from langchain.messages import VideoContentBlock, HumanMessage, TextContentBlock
from langchain.chat_models import init_chat_model

model = init_chat_model(
model="qwen3.6-35b-a3b",
base_url="https://dashscope.aliyuncs.com/compatible-mode/v1"
)
messages = HumanMessage(content_blocks=[
    TextContentBlock(text="描述一下这个视频？", type="text"),
    VideoContentBlock(url="https://test.com/test.mp4", type="video", mime_type="video/mp4")
])
response = model.invoke([messages])

File ~/project/python/me/langchain-example/.venv/lib/python3.12/site-packages/langchain_core/messages/block_translators/openai.py:150, in convert_to_openai_data_block(block, api)
    148 else:
    149     error_msg = f"Block of type {block['type']} is not supported."
--> 150     raise ValueError(error_msg)
    152 return formatted_block

ValueError: Block of type video is not supported.

VideoContentBlock(url="https://test.com/test.mp4", type="video", mime_type="video/mp4")

{
    "type": "video_url",
    "video_url":{
        "url": "https://test.com/test.mp4",
        "mime_type": "video/mp4"
    }
}

else:
    error_msg = f"Block of type {block['type']} is not supported."
    raise ValueError(error_msg)
```"

### System Info

System Information
------------------
> OS:  Darwin
> OS Version:  Darwin Kernel Version 25.5.0: Mon Apr 27 20:41:26 PDT 2026; root:xnu-12377.121.6~2/RELEASE_ARM64_T8132
> Python Version:  3.12.11 (main, Sep 18 2025, 19:41:45) [Clang 20.1.4 ]

Package Information
-------------------
> langchain_core: 1.4.0
> langchain: 1.3.1
> langsmith: 0.8.5
> langchain_anthropic: 1.4.3
> langchain_deepseek: 1.0.1
> langchain_ollama: 1.1.0
> langchain_openai: 1.2.2
> langchain_protocol: 0.0.15
> langgraph_sdk: 0.3.14

Optional packages not installed
-------------------------------
> deepagents
> deepagents-cli

Other Dependencies
------------------
> anthropic: 0.104.0
> httpx: 0.28.1
> jsonpatch: 1.33
> langgraph: 1.2.1
> ollama: 0.6.2
> openai: 2.38.0
> orjson: 3.11.9
> packaging: 26.2
> pydantic: 2.13.4
> pyyaml: 6.0.3
> requests: 2.34.2
> requests-toolbelt: 1.0.0
> rich: 15.0.0
> tenacity: 9.1.4
> tiktoken: 0.13.0
> typing-extensions: 4.15.0
> uuid-utils: 0.16.0
> xxhash: 3.7.0
> zstandard: 0.25.0