websocket-live-streamer

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websocket-live-streamer

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A proof-of-concept for using WebSockets to send real-time webcam data to a client. Runs at ~0.1s latency.

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// repository documentation

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# Livestreaming webcam through WebSockets

This is a proof-of-concept demo of using WebSockets to stream a video camera feed through WebSockets, so any browser can access it.

At the moment, it is very work-in-progress. The stream is coming in as the raw JPEG binary, which is then read as a blob that's loaded into an `Image()`, which is then drawn onto an HTML5 canvas.

The latency is about ~0.1s, but with relatively high CPU usage (NEW! Down from ~50% to ~20% CPU usage)

To demo this, make sure you have `opencv-python` and `websockets` installed, and you have Python 3.6+.

# Demo

1. Ensure you have the prerequisites, try `pip install -r requirements.txt`
2. Run `python server.py`
3. Visit `localhost:8000` to view the stream. A corresponding window will also be loaded with the current time.

# Running this in a Raspberry Pi

This currently works pretty well; I'm noticing ~0.4s latency between frames, but it runs at 30fps otherwise.

To try it out, make sure you have the `v4l2` drivers installed. Then, enable it with `sudo modprobe bcm2835-v4l2`. You can add it at boot by adding `bcm2835-v4l2` to `/etc/modules`.

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