---
license: apache-2.0
task_categories:
- video-text-to-text
---

# AskStream

AskStream is the first multi-turn benchmark spanning video and user uncertainty for streaming video understanding. It extends proactive video interaction with an **ASK** action, allowing models to proactively request missing information before answering, in addition to the conventional **WAIT** and **ANSWER** actions.

The benchmark contains **438** videos across **9** diverse domains, **1,401** questions covering **8** subtasks, and **2,714** manually annotated frame-level time windows for three interaction types: **WAIT**, **ASK**, and **ANSWER**. It supports both multiple-choice and open-ended evaluation across four task categories.

- **Paper:** [AskStream: When and What to Ask Proactively under Uncertainty in Streaming Video Understanding](https://huggingface.co/papers/2610.38678)
- **Project page:** [https://askstream.top/](https://askstream.top/)
- **Code:** [https://github.com/wanglu-cs/AskStream](https://github.com/wanglu-cs/AskStream)

## Sample usage

The repository README provides the following command to download the dataset:

```bash
python -m pip install -U huggingface_hub

hf download wanglucs/AskStream \
  --repo-type dataset \
  --local-dir /mnt/userdata/AskStream/data
```