DroidCam refuses to work properly on my linux mint

[Jakewas]

"Connection reset! Is the app running?" that all I got after following this tutorial on youtube: https://www.youtube.com/watch?v=p0grslWbJzE
I also tried to fix any of the possibles tutorial errors, following the oficial site tutorial: https://www.dev47apps.com/droidcam/linux/
but it also did not work.

I have 0 ideia of what is wrong, I give it the correct Phone IP and DroidCam Port, and it's always prompt me that message. Could you guys help me? I'm new to the forum, would be glad if helped. Sorry for my bad English, It's not my comfortable zone here hehe

Software version:
Linux mint 20.3
Android 4.2.2(Old cellphone which I intend to use as a security camera)
DroidCam(on android): 5.0.2(using an old version thanks to the old android), I downloaded it the oficial website: https://www.dev47apps.com/droidcam/android-4/(For Android 4.0.4).
DroidCam(on the computer): Not sure , most likely the last version.

I'm sure it has nothing to do with the version differences, because I tried use a modern version of DroidCam on my tablet and it still dont working, the problem is for sure in the computer.

[axrusar]

I got it working on a VM after A LOT of fiddling around.
I can't reproduce exactly what i did. but here are some parts that the tutorial does not show:

Did you install adb?

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sudo apt-get install adb

If you have multiple devices, you can specify which one to connect to using ANDROID_SERIAL environment variable. Use adb devices to list available devices and serials, then env ANDROID_SERIAL=XYZ droidcam-cli adb 4747.

Did you do this part?

My example and what it shows:

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cinnamuser@mint-VM:/tmp/droidcam$ adb devices
List of devices attached
92NLD51RMK	device

so i added it like this:

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env ANDROID_SERIAL=92NLD51RMK droidcam-cli adb 4747

at some point i had to restart pulseaudio

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pulseaudio --kill && pulseaudio --start

I also had to do something here:

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cinnamuser@mint-VM:/tmp/droidcam$ lsmod | grep snd_aloop
cinnamuser@mint-VM:/tmp/droidcam$ sudo modprobe snd_aloop

Did you add your username to the plugdev group:

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sudo usermod -aG plugdev cinnamuser

Try starting with

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droidcam-cli adb 4747

And it finaly worked
So i launch the app in the phone, launch the app in mint (127.0.0.1 is already set there and grayed out), click connect. i see the webcam video showing on the phone screen. and i tested using a webcam application in mint (webcamoid) and the video shows up.