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"""A sample to use WebRTC in sendonly mode to transfer frames
from the browser to the server and to render frames via `st.image`."""
import logging
import queue
import streamlit as st
from streamlit_webrtc import WebRtcMode, webrtc_streamer
logger = logging.getLogger(__name__)
webrtc_ctx = webrtc_streamer(
key="video-sendonly",
mode=WebRtcMode.SENDONLY,
rtc_configuration={"iceServers": [{"urls": ["stun:stun.l.google.com:19302"]}]},
media_stream_constraints={"video": True},
)
image_place = st.empty()
while True:
if webrtc_ctx.video_receiver:
try:
video_frame = webrtc_ctx.video_receiver.get_frame(timeout=1)
except queue.Empty:
logger.warning("Queue is empty. Abort.")
break
img_rgb = video_frame.to_ndarray(format="rgb24")
image_place.image(img_rgb)
else:
logger.warning("AudioReciver is not set. Abort.")
break
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