app.py

import streamlit as st
from streamlit_webrtc import webrtc_streamer, VideoTransformerBase
import av
import cv2

# Video Transformer Class for Rotating Stream
class RotatedVideoTransformer(VideoTransformerBase):
    def transform(self, frame):
        img = frame.to_ndarray(format="bgr24")
        rotated_img = cv2.rotate(img, cv2.ROTATE_90_COUNTERCLOCKWISE)  # Rotate 90 degrees
        return av.VideoFrame.from_ndarray(rotated_img, format="bgr24")

# Streamlit UI
st.title("Live Webcam Streaming with Rotation")

# Text Input and Confirm Button
user_input = st.text_input("Enter some text:")
if st.button("Confirm"):
    st.write(f"You entered: {user_input}")

# WebRTC Configuration with STUN + TURN Server
rtc_configuration = {
    "iceServers": [
        {"urls": ["stun:stun.l.google.com:19302"]},  # Google STUN Server
        {
            "urls": "turn:turn.nordvpn.com:1194",  # Free TURN server (NordVPN)
            "username": "random_username",
            "credential": "random_password"
        }
    ]
}
# Original Webcam Stream
st.subheader("Original Video Stream")
webrtc_streamer(
    key="original",
    media_stream_constraints={"video": True, "audio": False},
    rtc_configuration=rtc_configuration,  # Use STUN + TURN
)

# Rotated Webcam Stream
st.subheader("Rotated Video Stream")
webrtc_streamer(
    key="rotated",
    video_transformer_factory=RotatedVideoTransformer,
    media_stream_constraints={"video": True, "audio": False},
    rtc_configuration=rtc_configuration,  # Use STUN + TURN
)