New Component: streamlit-webrtc, a new way to deal with real-time media streams

Custom Components streamlit-webrtc
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195

@whitphx

Hi, I get the following error in streamlit. Does anyone have any clue what this is about?:

Your app is having trouble loading the streamlit_webrtc.component.webrtc_streamer component.

(The app is attempting to load the component from ****, and hasn’t received its "streamlit

" message.)

  • If this is a development build, have you started the dev server?
  • If this is a release build, have you compiled the frontend?

For more troubleshooting help, please see the Streamlit Component docs or visit our forums.

197

hi,did u solve this ? i encounter the same.

198

Hi developer, i really love your streamlit work, does any example related to real-time sound classification?

199

Hi Dev, im testing this in my local network and would like to ask. if i am not specifying a “rtc_configuration” in webrtc_streamer, does it mean that the the streamer is directly sending data over my network? I’am not connecting to a defined stun server right?

200

Hi everyone,

I have been using WebRTC apps hosted on the Community Cloud with Twilio TURN Server for several months now, and it has worked pretty well. However, since a few days ago, the web streaming has been extremely slow and functions poorly. I checked the sample app and observed the same problem.

Has anyone experienced the same problem and may know a solution?

201

yup. same
i was able to deploy the app successfully and it works for some time and later it is not working. camera is not opening

1 Like
202

hello, thank you @whitphx for developing the streamlit-webrtc package!
I’m new to using streamlit and streamlit-webrtc.

I wanted to develop an object detection-ish web app but it seems to not work. The camera doesnt open and its keeps loading.
Note: Python=3.11.8, streamlit=1.33 and streamlit-webrtc=0.47.6

Code:

import streamlit as st
from streamlit_webrtc import webrtc_streamer
import numpy as np

flip = st.checkbox("Flip")

def video_frame_callback(frame):
    img = frame.to_ndarray(format="bgr24")

    if flip:
        img = np.flipud(img)

    st.image(img, channels="BGR")

webrtc_streamer(key="example", video_frame_callback=video_frame_callback,
                media_stream_constraints={"video": True, "audio": True})

Error in logs:

File "/usr/local/lib/python3.10/asyncio/selector_events.py", line 719, in _fatal_error
    self._loop.call_exception_handler({
AttributeError: 'NoneType' object has no attribute 'call_exception_handler'

output:

image
image1174×660 10.3 KB

Thanks!

1 Like
203

can you also switch the cameras? for example if I want to use an external usb camera?

204

I’m facing the same challenge, it was working and after some time, it just stopped. I’m able to select cameras but after I press start it just won’t open.

205

has anyone been able to get it to work ?

206

I am also not able to get it to work. It was working earlier this week for me but as of now, it is throwing errors. Is there any solution for this? Thanks.

207

I wish there was something to use for the OpenAI’s new realtime voice feature that is primarily run on Java.

208

Hi there was a problem that Streamlit-WebRTC didn’t work with Streamlit>=1.39.0.
Now streamlit-webrtc>=0.48.1 should fix it. Plz try the latest release. Thanks. Sorry for inconvenience.
Ref: streamlit webrtc not working · Issue #1848 · whitphx/streamlit-webrtc · GitHub