st.video() in Streamlit

In Streamlit, st.video() embeds a video player directly in your app. It supports local video files, URLs (including YouTube), and raw bytes, making it useful for tutorials, dashboards, ML demos, and media apps.

Basic Syntax

st.video(data, format="video/mp4", start_time=0)    

The function has the following parameters:

• data: File path, URL, bytes, or file-like object
• format: Video format (mp4, webm, ogg)
• start_time: Start playback from a specific second

Example: Play a local video file.

Python

import streamlit as st

st.title("Local Video Example")

st.video("sample_video.mp4")    

• Embeds a video player inside the app.
• Supports local files and online video URLs.
• Starts playback automatically when the player loads.

✔ Useful for tutorials, demos, and offline apps.