Article 5H4YN I can use only audio or only video with my webcam, but not simultaneously

I can use only audio or only video with my webcam, but not simultaneously

by
m4dj0e
from LinuxQuestions.org on (#5H4YN)
I have a quite old Logitech QuickCam Communicate STX Webcam with my Linux Mint (linux54) and I need to use the older version of V4L in order to make nowadays application to work with it. Therefore for Zoom, Chromium and other applications I use special scripts in the following format:

Code:#!/bin/bash
LD_PRELOAD=/usr/lib32/libv4l/v4l1compat.so /usr/bin/APP_NAMEHowever, when I try Cheese, I could take any photo normally, but as soon as I press record for recording a video, the application freezes instantly.

Another weird situation is when I try to use Zoom, I see the app's settings indicate all functions of my camera normally: the microphone works out of box, the camera works fine as well, but only in Settings! As soon as I start any meeting, only one works at the same time: Audio OR Video.

When I see my camera working, the other party can't hear my voice regardless of the Audio settings or toggling state of my microphone. Same goes in the opposite direction: when I close zoom and start an Audio meeting, I can't enable my video and the video toggle button is always set to ON, but it doesn't emit any video data to the other party.

How could I debug this issue and what particular data should I provide here?
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