Read stream from OpenCV.

Hello,

First, thanks for your great work. It worked like a charm, really easy to set up and quite simple to follow 👍

However, I have a question - I would like to read the video stream that is produced by this Flask app using OpenCV.

I usually would use: VideoStream('http://127.0.0.1:5000/video_feed').start()

BUT this throws an error:

[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes
[mpjpeg @ 0x7f9494206400] Expected boundary '--' not found, instead found a line of 127 bytes

as (I think) there isn’t a specific file that VideoStream needs to start reading.

I would appreciate it a lot if you throw any ideas my way 🙏