[RFC]: Support for video input

[TKONIY]

Motivation.

Currently models like llava-hf/llava-next-video* recognize image and video inputs with different tokens, and do different computations. Therefore vLLM should provide new APIs and inference support for video input.

Proposed Change.

API

• LLM.generate() API for video

  LLM.generate({
      "prompt": "<video> please summarize this video",
      "multi_modal_data": {
          "video": video
      }
  })

• OpenAI compatible chat completion APIs

Roadmap

• Add VideoPlugin for MultiModalPlugin
• [model] Support for Llava-Next-Video model #7559
  • Add initial support for replacing a <video> token with a single video.
  • Add support for replacing all <video> and <image> tokens with multiple multi-modal inputs.
• Support prefix caching for the same videos.
• Support openai chat completion APIs.

Feedback Period.

A week

CC List.

@DarkLight1337
@zifeitong
@ywang

Any Other Things.

No response

[PancakeAwesome]

Is there a roadmap for 'openai vllm server supports video interface' feature? Thank you

[TKONIY]

Is there a roadmap for 'openai vllm server supports video interface' feature? Thank you

Thank you. It is a very critical feature, but it needs a careful discussion for the APIs. I recently do not have a plan to work on that.

CC
@DarkLight1337
@ywang96

[ywang96]

Is there a roadmap for 'openai vllm server supports video interface' feature? Thank you

Thank you. It is a very critical feature, but it needs a careful discussion for the APIs. I recently do not have a plan to work on that.

CC @DarkLight1337 @ywang96

@TKONIY Sounds good - we will take it over from here. Thank you for the contribution for the model!

[sayakpaul]

@ywang96 I am quite interested in using vllm for high-performance video captioning. This will be tremendously helpful for furthering research on video generation from language.

I was able to use Qwen for this: #9128 (comment).

I want to how to extend this to multi-video captioning. If you have some pointers for me, that would be helpful!

[sayakpaul]

Cc @TKONIY if #7558 (comment) sounds interesting.

[TKONIY]

@sayakpaul Sorry that I did not quite follow up with the vLLM development recently. If you need to implement the online serving support for video/ multi video, I think you can start from an RFC to define the http API (which has not been supported by official openai api). Then modify some frontend code in entrypoint/ to connect it with the llm engine.

[sayakpaul]

Currently, I am doing this:
#9128 (comment)

[ywang96]

@ywang96 I am quite interested in using vllm for high-performance video captioning. This will be tremendously helpful for furthering research on video generation from language.

I was able to use Qwen for this: #9128 (comment).

I want to how to extend this to multi-video captioning. If you have some pointers for me, that would be helpful!

Hey @sayakpaul! Sorry for the late reply and this is definitely interesting.

AFAIK, only Llava-OneVision supports multi-video captioning once #8905 is merged, and this is more of a model capability than of the inference infrastructure capability (In my knowledge, video language inference is more or less the same as multi-image inference, so it's a matter of whether the model itself was trained to do this task)

[sayakpaul]

AFAIK, only Llava-OneVision supports multi-video captioning once #8905 is merged, and this is more of a model capability than of the inference infrastructure capability

Agree. Thanks for your inputs.

Would it be possible to update this thread with an example on doing multi-video captioning?

[ywang96]

AFAIK, only Llava-OneVision supports multi-video captioning once #8905 is merged, and this is more of a model capability than of the inference infrastructure capability

Agree. Thanks for your inputs.

Would it be possible to update this thread with an example on doing multi-video captioning?

Yea - I'll keep that in mind and update this issue once we have some bandwidth to get #8905 merged. Will probably update our example scripts too!

[DarkLight1337]

Closing as completed since #8905 and #9842 have both been resolved.

[sayakpaul]

@DarkLight1337 which doc part we should refer to for this?

[DarkLight1337]

Please see #9842 on how to use it.

[DarkLight1337]

@litianjian can you add some docs/examples for this?

[sayakpaul]

@DarkLight1337 thanks!

Is #10020 (comment) a sufficiently good example for me as a reference?

[DarkLight1337]

@DarkLight1337 thanks!

Is #10020 (comment) a sufficiently good example for me as a reference?

Yes, that should be clear enough.

[litianjian]

@litianjian can you add some docs/examples for this?
Sure