How to find second camera adress?

CaptainKiwii commented 5 years ago

Hi Ok so kind of new in here and with plugins, I could get how to find my second camera (connected with usb on the rpi) adress.

I have a c920 pro connected and set as default, but the c170 isn't showing.

So how am I supposed to make this work? I found in one of the other thread that commands :

https://user-images.githubusercontent.com/5686085/45827289-b8caba00-bcbb-11e8-85fb-c4d4665b8f18.JPG

Yet I found that the haproxy thing tend to slow things down a lot.

https://github.com/foosel/OctoPrint/issues/1846

So... not sure what I'm supposed to do.

What I want to do is using my C920 for timelapse purposes with octolapse, having it above the printer while I have the c970 attached on the z axis for monitoring purpose (feed wouldn't have to be stored, just displayed for that one).

What am I misssing ?

harryherbig commented 5 years ago

I would say that there is no stream running for the second webcam so you need to start a second instance of m-jpg streamer with the correct device like /dev/video1.

CaptainKiwii commented 5 years ago

Hi, first of all thanks for taking the time to answer to you, any idea of how to start that second instance please? (even link or direction)

harryherbig commented 5 years ago

well just to get the stream running, this can be achieved like so:

cd $HOME/mjpg-streamer/
./mjpg_streamer -o "output_http.so -w ./www -p 8081" -i "input_uvc.so -d /dev/video0 -f 10 -r 1280x720"

after starting the second mjpeg streamer, its webinterface can be reached at: http://YOUR_OCTOPI_HOSTNAME_OR_IP:8081

see that used video0, thats my usb cam the raspicam. which is my first cam is handled by the original mjpeg stream.

also i changed the port to 8081.

if that works you need to automatically find a way to start the stream, with things like init.d scripts ,nohup, rc.local etc.

if you need to see both stream on one page, you need to add a second backend to the haproxy, so that everything is reachable on port 80.

can be achieved like so:

 frontend public
        bind :::80 v4v6
        bind :::443 v4v6 ssl crt /etc/ssl/snakeoil.pem
        option forwardfor except 127.0.0.1
        use_backend webcams if { path_beg /webcams/ }
        use_backend topcam if { path_beg /topcam/ }
        use_backend webcam if { path_beg /webcam/ }
        default_backend octoprint

backend topcam
        reqrep ^([^\ :]*)\ /topcam/(.*)     \1\ /\2
        server webcam1  127.0.0.1:8081
        errorfile 503 /etc/haproxy/errors/503-no-webcam.http

backend webcams
        mode http
        errorfile 503 /etc/haproxy/webcams.html

and cat /etc/haproxy/webcams.html

<html>
<head>
    <style>
        img {
            display: block;
            width: auto;
            height: auto;
            max-width: 100%;
            max-height: 90%;
        }
    </style>
</head>

<body>
    <div>
        <img src="/webcam/?action=stream" />
        <img src="/topcam/?action=stream" />
    </div>
</body>

</html>

the webcams.html part is my hack of haproxy to serve a static file, by misusing error page to get both webcams on one page.

harryherbig commented 5 years ago

http://www.thedoble.com/3d-printing/running-two-webcams-with-octoprint-for-hd-timelapses/

CaptainKiwii commented 5 years ago

Thanks again ;) I'm diving into that once I got back from work.

mikedmor / OctoPrint_MultiCam

How to find second camera adress? #12